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NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

January, 2020 to December, 2020

Index includes 2839 messages. Sorted alphabetically by author.

                    
Celestial navigation: easier basic principle?A Ponics25 Jan 2020, 04:42
LAN calculations for GHAAdam Frolic26 Mar 2020, 19:28
Hughes & Son's Sextant - General InfoAdrian Bevan22 Jun 2020, 14:39
Re: Hughes & Son's Sextant - General InfoAdrian Bevan26 Aug 2020, 12:49
Re: Hughes & Son's Sextant - General InfoAdrian Bevan28 Aug 2020, 14:46
Re: Hughes & Son's Sextant - General InfoAdrian Bevan29 Aug 2020, 10:10
Re: Hughes & Son's Sextant - General InfoAdrian Bevan29 Aug 2020, 10:12
Re: Venus in daylightAdrian F9 Apr 2020, 10:50
Re: More sunlight in Greenland than in the AmazonAdrian F26 Dec 2020, 12:23
Re: More sunlight in Greenland than in the AmazonAdrian F27 Dec 2020, 17:44
Re: Beginning celestial navigation methodAl Stewart26 Jun 2020, 16:10
Re: Hezzanith SextantAl Stewart4 Sep 2020, 17:02
Re: Hezzanith SextantAl Stewart5 Sep 2020, 01:10
Re: Hezzanith SextantAl Stewart7 Sep 2020, 00:03
Re: Hezzanith SextantAl Stewart7 Sep 2020, 18:03
Re: Hezzanith SextantAl Stewart7 Sep 2020, 23:02
Re: Hezzanith SextantAl Stewart8 Sep 2020, 01:52
Re: Hezzanith SextantAl Stewart8 Sep 2020, 02:08
Re: Hezzanith SextantAl Stewart8 Sep 2020, 23:50
Re: Units in NavigationAl Stewart28 Sep 2020, 17:54
Re: Poor BecruxAl Stewart7 Dec 2020, 16:25
Re: Hardly ever get an LOP than 20 NM - why?Alan S17 Jan 2020, 06:11
Re: Latitude by two stars observed simultaneouslyAlan S5 Feb 2020, 19:21
Re: ChronographAlan S5 Mar 2020, 01:57
Re: Longitude by Time Sight Using a Slide RuleAlan S22 Mar 2020, 22:32
Re: Longitude by Time Sight Using a Slide RuleAlan S23 Mar 2020, 02:37
Re: d correctionAlan S30 Mar 2020, 20:59
Re: Traditional Bygrave, Modern Bygrave and Linear slide rule emulators.Alan S2 Apr 2020, 19:53
Re: Celestial in the Age of Sail, April 7-9, onlineAlan S2 Apr 2020, 19:59
Re: Weems and Plath Celestial Slide RuleAlan S10 Apr 2020, 20:29
Re: Weems and Plath Celestial Slide RuleAlan S15 Apr 2020, 03:51
Re: Calculators "old technology"Alan S1 May 2020, 01:42
Re: Calculators "old technology"Alan S1 May 2020, 01:48
Re: Celestial Navigation in the British Royal NavyAlan S4 May 2020, 20:23
Re: Traditional navigation by slide ruleAlan S13 May 2020, 01:44
Re: Beginning celestial navigation methodAlan S15 May 2020, 02:29
Re: Beginning celestial navigation methodAlan S15 May 2020, 23:04
Re: Sextant handle electric system, out of serviceAlan S20 Jun 2020, 00:24
Re: Timex Iron Man Watch=kaputAlan S2 Jul 2020, 17:16
Re: Timex Iron Man Watch=kaputAlan S2 Jul 2020, 22:51
Re: Timex Iron Man Watch=kaputAlan S4 Jul 2020, 02:47
Re: Navigator's Slide RuleAlan S12 Jul 2020, 04:07
Re: Navigator's Slide RuleAlan S12 Jul 2020, 16:58
Re: Navigator's Slide RuleAlan S12 Jul 2020, 22:17
Re: Bob Goethe's Mark 2 Navigators slide rule, test drive comparisons.Alan S14 Jul 2020, 20:27
Re: M.F. Maury and the progress of historyAlan S16 Jul 2020, 22:08
Re: Bob Goethe's Mark 2 Navigators slide rule, test drive comparisons.Alan S18 Jul 2020, 16:56
Re: Hybrid artificial horizonAlan S23 Jul 2020, 18:22
Re: Hybrid artificial horizonAlan S23 Jul 2020, 21:17
Re: Making an artificial horizonAlan S25 Jul 2020, 02:54
Re: AH Level?Alan S13 Aug 2020, 15:07
Re: Navigator's Slide RuleAlan S18 Aug 2020, 03:16
Re: Sextant LubricationAlan S8 Sep 2020, 16:44
Re: Novice navigator with a Freiberger sextantAlan S10 Sep 2020, 03:00
Re: Digital SextantAlan S10 Sep 2020, 18:52
Re: Star globe details and a Russian/Soviet bookAlan S25 Sep 2020, 21:16
Re: Star globe details and a Russian/Soviet bookAlan S26 Sep 2020, 22:35
Re: Crelle's tablesAlan S27 Sep 2020, 04:00
Re: Navigation Systems: online lectureAlan S29 Sep 2020, 22:54
Re: Battenberg manualsAlan S7 Oct 2020, 19:16
Re: Phosphine biomarker gas in Venus atmosphere.Alan S8 Oct 2020, 04:02
Re: Experience with an artifical horizonAlan S14 Oct 2020, 03:49
Re: Folding Chair for CNAlan S14 Oct 2020, 21:45
Re: Crelle's tablesAlan S17 Oct 2020, 16:39
Re: Radians and DegreesAlan S4 Nov 2020, 16:29
Re: Radians and DegreesAlan S4 Nov 2020, 19:27
Re: Radians and DegreesAlan S5 Nov 2020, 21:29
Re: Radians and DegreesAlan S6 Nov 2020, 15:57
Re: Casio fx-300ES Plus (2nd Edition)Alan S14 Nov 2020, 03:29
Re: Radians and DegreesAlan S14 Nov 2020, 03:50
Re: CP-300/U USAF Star FinderAlan S17 Nov 2020, 03:51
Re: Navigator's Slide RuleAlberto Najar12 Jul 2020, 10:10
Automatic Plotting of LOP's using graphing calculatorAlex Spradling13 Feb 2020, 22:57
Re: Automatic Plotting of LOP's using graphing calculatorAlex Spradling14 Feb 2020, 00:34
Air Almanac and AP 2020 availableAlexander Duytschaever30 Mar 2020, 13:35
Calibrating a Bris with a Davis mk15 sextantAlexander Duytschaever26 Apr 2020, 14:55
Re: Calibrating a Bris with a Davis mk15 sextantAlexander Duytschaever28 Apr 2020, 15:00
Re: Celestial in the thin air!Alexander Duytschaever9 Jun 2020, 09:04
Re: Celestial in the thin air!Alexander Duytschaever9 Jun 2020, 09:09
Re: Curious star chartsAlexander Duytschaever20 Nov 2020, 15:37
Re: Cosine formula to solve a right spherical triangle?Alexandre Eremenko21 Jan 2020, 20:06
Re: Wikipedia: (Russian-language) article on Gauss's direct fix calculationsAlexandre Eremenko23 Jan 2020, 21:18
Re: Navigate to this islandAlexandre Eremenko19 Mar 2020, 20:39
Re: Please help to identify a sextantAlexandre Eremenko20 Mar 2020, 01:07
Re: Maskelyne: Astronomer RoyalAlexandre Eremenko25 Mar 2020, 20:54
Re: Sestrel sextant thoughts?Alexandre Eremenko23 May 2020, 04:42
Re: Sestrel sextant thoughts?Alexandre Eremenko24 May 2020, 02:19
Re: Sestrel sextant thoughts?Alexandre Eremenko24 May 2020, 15:47
Re: Russian celestial star globeAlexandre Eremenko19 Sep 2020, 18:53
Re: Russian celestial star globeAlexandre Eremenko20 Sep 2020, 12:11
Re: Arecibo - GoneAlexandre Eremenko1 Dec 2020, 20:23
Re: Measuring (and Calculating) DipAndrew T. Young19 Oct 2020, 04:24
Celnav apps for AndroidAndrés Ruiz13 Feb 2020, 18:01
Re: Automatic Plotting of LOP's using graphing calculatorAndrés Ruiz14 Feb 2020, 06:54
Re: A-12 ExperiencesAndrés Ruiz14 Feb 2020, 14:39
Re: Smart Phone CNAndrés Ruiz5 Mar 2020, 19:50
Re: Nautical Almanac AppAndrés Ruiz3 Apr 2020, 09:21
Re: Nautical Almanac AppAndrés Ruiz4 Apr 2020, 09:40
Re: Nautical Almanac AppAndrés Ruiz5 Apr 2020, 17:18
Re: Paper: Geometry of Elliptical Probability Contours...Andrés Ruiz24 Apr 2020, 19:21
Re: NavlistAndrés Ruiz2 May 2020, 19:14
Re: Celestial Navigation licensing examsAndrés Ruiz6 May 2020, 14:50
Re: Position from altitude and azimuth.Andrés Ruiz8 May 2020, 10:26
Re: Non-graphical way to solve a wind triangleAndrés Ruiz11 May 2020, 05:56
Re: Position from altitude and azimuth.Andrés Ruiz11 May 2020, 06:36
Re: Position from altitude and azimuth.Andrés Ruiz11 May 2020, 09:01
Re: Non-graphical way to solve a wind triangleAndrés Ruiz12 May 2020, 07:27
Re: Beginning celestial navigation methodAndrés Ruiz13 May 2020, 07:13
Re: Equal Azimuth LinesAndrés Ruiz13 May 2020, 17:04
Re: Position from altitude and azimuth.Andrés Ruiz13 May 2020, 17:22
Re: Position from altitude and azimuth.Andrés Ruiz15 May 2020, 06:31
Re: Position from altitude and azimuth.Andrés Ruiz15 May 2020, 06:53
Re: Equal Azimuth LinesAndrés Ruiz15 May 2020, 09:21
Re: Position from two azimuthsAndrés Ruiz16 May 2020, 10:58
Re: Position from two azimuthsAndrés Ruiz17 May 2020, 09:42
Re: Position from altitude and azimuth.Andrés Ruiz17 May 2020, 10:17
Re: Position from altitude and azimuth.Andrés Ruiz18 May 2020, 08:09
Re: Position from altitude and azimuth.Andrés Ruiz19 May 2020, 19:14
Re: Position from altitude and azimuth.Andrés Ruiz20 May 2020, 07:55
Re: Equal Azimuth LinesAndrés Ruiz21 May 2020, 18:28
Re: Sights with just azimuthAndrés Ruiz23 May 2020, 09:57
Re: Sights with just azimuthAndrés Ruiz23 May 2020, 10:07
Re: Parallax in azimuthAndrés Ruiz25 May 2020, 16:12
Re: Celestial in the thin air!Andrés Ruiz5 Jun 2020, 07:01
Re: EOT Will Change Sign In Thirteen Hours TimeAndrés Ruiz12 Jun 2020, 06:17
Re: Plot Sheet GeneratorAndrés Ruiz20 Jul 2020, 13:38
Re: Longitude at noonAndrés Ruiz9 Sep 2020, 07:57
Re: Hanno Ix azimuth diagram flowchart?Andrés Ruiz2 Nov 2020, 14:39
Re: Essay: Navigating by the Heavens...Andy Schell23 Jul 2020, 23:09
Re: Moon Venus Lunar - Interpretation of resultsAntoine Couëtte7 Feb 2020, 13:09
Re: Moon Venus Lunar - Interpretation of resultsAntoine Couëtte8 Feb 2020, 07:41
Classical Lunars diagram: who invented it ?Antoine Couëtte9 Feb 2020, 14:43
Re: Lunar distance parallactic retardationAntoine Couëtte15 Feb 2020, 18:12
Re: Using the sun's direct and reflected image to determine a sextant's IEAntoine Couëtte11 Mar 2020, 19:09
Re: Index error vs. index correctionAntoine Couëtte20 Mar 2020, 19:36
Re: Index error vs. index correctionAntoine Couëtte21 Mar 2020, 20:22
Re: Index error vs. index correctionAntoine Couëtte22 Mar 2020, 19:07
Re: Index error vs. index correctionAntoine Couëtte22 Mar 2020, 19:17
Re: Index error vs. index correctionAntoine Couëtte23 Mar 2020, 16:27
Minimum geocentric Saturn-Mars apparent angular DistanceAntoine Couëtte31 Mar 2020, 07:07
Re: Minimum geocentric Saturn-Mars apparent angular DistanceAntoine Couëtte2 Apr 2020, 07:35
Re: Star tracker article, interesting graphicsAntoine Couëtte4 Apr 2020, 09:31
Re: Curve fitting for noon SunAntoine Couëtte5 Apr 2020, 23:49
Re: A strange set of Venus LoPs.Antoine Couëtte6 Apr 2020, 17:14
Re: Minimum geocentric Saturn-Mars apparent angular DistanceAntoine Couëtte8 Apr 2020, 16:25
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte11 Apr 2020, 09:11
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte11 Apr 2020, 19:20
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte11 Apr 2020, 22:56
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte13 Apr 2020, 17:13
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte14 Apr 2020, 14:22
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte15 Apr 2020, 14:55
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte15 Apr 2020, 17:12
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte18 Apr 2020, 18:51
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte19 Apr 2020, 18:40
Re: Venus mer-pass for Lat, Sun time sight for Lon.Antoine Couëtte20 Apr 2020, 02:23
Re: 2020-05-03 Sun-Venus sessionAntoine Couëtte7 May 2020, 21:43
Re: Position from altitude and azimuth.Antoine Couëtte8 May 2020, 12:30
Re: Position from altitude and azimuth.Antoine Couëtte9 May 2020, 05:13
Re: Position from altitude and azimuth.Antoine Couëtte9 May 2020, 11:39
Re: Position from altitude and azimuth.Antoine Couëtte10 May 2020, 16:23
Re: Position from altitude and azimuth.Antoine Couëtte11 May 2020, 06:01
Re: Position from altitude and azimuth.Antoine Couëtte11 May 2020, 09:19
Re: Position from altitude and azimuth.Antoine Couëtte11 May 2020, 10:34
Re: Position from altitude and azimuth.Antoine Couëtte12 May 2020, 19:48
Re: Position from altitude and azimuth.Antoine Couëtte13 May 2020, 02:56
Equal Azimuth LinesAntoine Couëtte13 May 2020, 07:40
Re: Position from altitude and azimuth.Antoine Couëtte13 May 2020, 14:33
Re: Equal Azimuth LinesAntoine Couëtte13 May 2020, 20:23
Re: Position from altitude and azimuth.Antoine Couëtte13 May 2020, 20:42
Re: Equal Azimuth LinesAntoine Couëtte14 May 2020, 15:39
Re: Intercept Method or Marcq St. HilaireAntoine Couëtte14 May 2020, 16:52
Re: Equal Azimuth LinesAntoine Couëtte15 May 2020, 08:57
Re: Equal Azimuth LinesAntoine Couëtte15 May 2020, 20:40
Re: Position from two azimuthsAntoine Couëtte16 May 2020, 14:01
Re: Position from two azimuthsAntoine Couëtte17 May 2020, 10:42
Re: Position from two azimuthsAntoine Couëtte18 May 2020, 01:37
Re: Lunar distance parallactic retardationAntoine Couëtte22 May 2020, 19:10
Re: Sestrel sextant thoughts?Antoine Couëtte23 May 2020, 11:17
Re: Sestrel sextant thoughts?Antoine Couëtte24 May 2020, 07:18
Re: Parallax in azimuthAntoine Couëtte24 May 2020, 20:34
Re: Lunar distance method of ChauvenetAntoine Couëtte28 May 2020, 09:39
Re: Parallax in azimuthAntoine Couëtte29 May 2020, 06:35
Re: E.O.T. for 2020Antoine Couëtte2 Jun 2020, 14:46
Re: d correctionBarrie Heald29 Mar 2020, 14:05
Re: d correctionBarrie Heald30 Mar 2020, 02:33
Re: Casio fx-300ES Plus (2nd Edition)Bela Kovacs14 Nov 2020, 14:43
New David Lewis bookBenjamin Lowings7 Nov 2020, 09:57
Re: M.F. Maury and the progress of historyBill B15 Jul 2020, 20:06
Re: Longitude at noonBill B9 Sep 2020, 23:11
Re: Crelle's tablesBill B28 Sep 2020, 05:47
Titanic rescue attemps documentaryBill B9 Nov 2020, 09:21
Re: Survival at Sea, Stove by an OrcaBill Lionheart13 Jan 2020, 09:07
Re: Survival at Sea, Stove by an OrcaBill Lionheart13 Jan 2020, 09:12
Re: Survival at Sea, Stove by an OrcaBill Lionheart13 Jan 2020, 09:37
Re: No DR position. How can you get an accurate celestial fix?Bill Lionheart21 Jan 2020, 11:43
Re: No DR position. How can you get an accurate celestial fix?Bill Lionheart24 Jan 2020, 07:45
Re: Is this a real site (celestial... .info)?Bill Lionheart10 Feb 2020, 08:29
Re: Radio from the middle of nowhereBill Lionheart29 Apr 2020, 21:30
Celestial Navigation TowersBill Lionheart6 May 2020, 15:12
Re: Position from altitude and azimuth.Bill Lionheart9 May 2020, 07:47
Re: Position from altitude and azimuth.Bill Lionheart9 May 2020, 23:18
Re: Position from altitude and azimuth.Bill Lionheart11 May 2020, 07:01
Re: Position from altitude and azimuth.Bill Lionheart12 May 2020, 18:11
Re: NavlistBill Lionheart13 May 2020, 09:01
Re: Position from altitude and azimuth.Bill Lionheart13 May 2020, 09:14
Re: Position from altitude and azimuth.Bill Lionheart15 May 2020, 14:51
Re: Equal Azimuth LinesBill Lionheart15 May 2020, 16:33
Re: Position from altitude and azimuth.Bill Lionheart16 May 2020, 16:59
Davis Mk 25 prismatic monocular upgradeBill Lionheart17 May 2020, 13:04
Re: Position from altitude and azimuth.Bill Lionheart18 May 2020, 09:59
Re: Position from altitude and azimuth.Bill Lionheart19 May 2020, 08:00
Re: Position from altitude and azimuth.Bill Lionheart19 May 2020, 11:13
Re: Position from altitude and azimuth.Bill Lionheart19 May 2020, 13:19
Re: Position from altitude and azimuth.Bill Lionheart19 May 2020, 16:04
Re: Position from altitude and azimuth.Bill Lionheart20 May 2020, 06:18
Re: Position from altitude and azimuth.Bill Lionheart20 May 2020, 18:50
Re: Position from altitude and azimuth.Bill Lionheart21 May 2020, 16:25
Sights with just azimuthBill Lionheart22 May 2020, 19:06
Re: ADMIN: The 21st Century Awaits...Bill Lionheart24 May 2020, 11:15
Automated celnav in the newsBill Lionheart30 May 2020, 15:30
Re: Navigation system failureBill Lionheart1 Jun 2020, 21:41
Re: Sun's GenderBill Lionheart21 Jun 2020, 15:14
Re: Corporal Sadler SAS: Desert NavigationBill Lionheart24 Jun 2020, 18:08
Re: Ex-Meridian Sight using InmansBill Lionheart25 Jun 2020, 07:20
Re: Timex Iron Man Watch=kaputBill Lionheart3 Jul 2020, 08:46
More Cocked HatsBill Lionheart18 Jul 2020, 07:59
Re: More Cocked HatsBill Lionheart19 Jul 2020, 09:58
Re: The History of Celestial Navigation (2020)Bill Lionheart28 Jul 2020, 07:24
Re: The History of Celestial Navigation (2020)Bill Lionheart28 Jul 2020, 15:52
Re: The History of Celestial Navigation (2020)Bill Lionheart29 Jul 2020, 12:16
RCC's log archiveBill Lionheart2 Aug 2020, 11:35
Re: Quantum Sensors in Navigation - Free Webinar Monday 10th AugustBill Lionheart10 Aug 2020, 19:30
Re: Who needs a compass? Who needs a sextant?Bill Lionheart19 Aug 2020, 17:55
Re: Digital SextantBill Lionheart10 Sep 2020, 10:55
Re: Single LOP is enough?Bill Lionheart15 Sep 2020, 21:01
Re: Kollsman periscopic sextant mountBill Lionheart22 Sep 2020, 09:51
Re: Curious sextant add-onBill Lionheart22 Oct 2020, 06:57
Re: Curious sextant add-onBill Lionheart22 Oct 2020, 09:44
Re: Sextant practice in 2014Bill Lionheart16 Nov 2020, 09:11
Re: Digital wrist watch with specific capabilitiesBill Lionheart17 Nov 2020, 18:18
Re: Small craft RDF in 1967Bill Lionheart1 Dec 2020, 16:41
Re: Davis sextant plasticBill Lionheart12 Dec 2020, 14:37
Re: Davis sextant plasticBill Lionheart12 Dec 2020, 14:39
Curious sextant add-onBill Lockhart21 Oct 2020, 17:06
Re: Curious sextant add-onBill Lockhart22 Oct 2020, 00:14
Re: Curious sextant add-onBill Lockhart22 Oct 2020, 17:42
Re: Dating Hughes and Son sextantsBill Morris5 Jan 2020, 07:13
Re: Kollsman periscopic sextant mountBill Morris17 Feb 2020, 21:15
Re: Artificial horizon: gyro vs bubble?Bill Morris23 Feb 2020, 22:28
Re: Choosing right A-10: how to?Bill Morris27 Feb 2020, 21:55
Re: Kelvin Hughes sounding sextant !Bill Morris17 Mar 2020, 06:34
Re: My sextant repairBill Morris20 Jun 2020, 05:29
Re: My sextant repairBill Morris20 Jun 2020, 21:51
Re: Hughes & Son's Sextant - General InfoBill Morris23 Jun 2020, 22:26
Re: A-10 Sextant Maintenance ManualBill Morris28 Jun 2020, 05:01
Re: Expensive toysBill Morris5 Aug 2020, 09:12
Re: Hezzanith SextantBill Morris6 Sep 2020, 08:50
Re: Hezzanith SextantBill Morris8 Sep 2020, 22:10
Re: Clear side of horizon mirrors has reflecting properties.Bill Morris16 Oct 2020, 01:29
Re: Clear side of horizon mirrors has reflecting properties.Bill Morris17 Oct 2020, 02:41
Re: Clear side of horizon mirrors has reflecting properties.Bill Morris17 Oct 2020, 03:24
Re: Sextant practice in 2014Bill Morris16 Nov 2020, 03:47
Re: Incomplete Instrument-- WWII German SoldsextantBill Morris30 Nov 2020, 21:52
Re: Sextant with Ivory Scale, Serial No 577 by G. A. Berry & Son, Hartlepool,Bill Morris7 Dec 2020, 21:30
Re: Unusual SunBill Ritchie1 Jan 2020, 17:35
Re: Automatic Plotting of LOP's using graphing calculatorBill Ritchie15 Feb 2020, 02:23
Modern Bygrave Slide Rule EmulatorBill Ritchie5 Mar 2020, 20:45
Re: Modern Bygrave Slide Rule EmulatorBill Ritchie18 Mar 2020, 18:53
Re: Modern Bygrave Slide Rule EmulatorBill Ritchie21 Mar 2020, 23:05
Traditional Bygrave, Modern Bygrave and Linear slide rule emulators.Bill Ritchie2 Apr 2020, 10:40
Re: Minimum geocentric Saturn-Mars apparent angular DistanceBill Ritchie3 Apr 2020, 12:06
Re: Venus mer-pass for Lat, Sun time sight for Lon.Bill Ritchie19 Apr 2020, 14:52
Re: Comedy on the Greenwich MeridianBill Ritchie18 Jun 2020, 14:36
Re: Navigator's Slide RuleBill Ritchie13 Jul 2020, 08:32
Slide Rule Emulators relocatedBill Ritchie16 Jul 2020, 21:20
Astron relocatedBill Ritchie16 Jul 2020, 21:36
Re: NO Online Meetings TomorrowBill Ritchie6 Sep 2020, 21:42
Re: Crelle's tablesBill Ritchie27 Sep 2020, 21:55
Re: Where are we NavigatorBill Ritchie6 Nov 2020, 23:02
Re: Low Altitude Sun Artificial Horizon ExerciseBill Ritchie30 Nov 2020, 23:03
Re: Low Altitude Sun Artificial Horizon ExerciseBill Ritchie4 Dec 2020, 23:21
RAF Air Navigation: listing on ebayBob Crawley9 Jan 2020, 19:27
Re: RAF Air Navigation: listing on ebayBob Crawley16 Jan 2020, 10:27
Re: RAF Air Navigation: listing on ebayBob Crawley18 Jan 2020, 09:16
Re: Modern Bygrave Slide Rule EmulatorBob Crawley7 Mar 2020, 09:24
Dutch Nautical Atlas/Almanac 1584Bob Crawley5 Apr 2020, 07:02
Re: Dutch Nautical Atlas/Almanac 1584Bob Crawley6 Apr 2020, 17:50
1583 Dutch Almanac and cross staffBob Crawley9 Apr 2020, 18:51
Re: 1583 Dutch Almanac and cross staffBob Crawley10 Apr 2020, 06:31
Excellent talk by David PikeBob Crawley13 May 2020, 07:08
Re: Celestial in the thin air!Bob Crawley6 Jun 2020, 08:36
Flat Earth?Bob Crawley26 Jun 2020, 06:37
Royal Geographical Society talk: 8 Oct 2020Bob Crawley7 Aug 2020, 07:13
Re: Navigation Training at Sea and in the Air - Free Online SeminarBob Crawley16 Oct 2020, 18:09
Mariner's Mirror PodcastBob Crawley7 Nov 2020, 15:43
Re: How high is "Angels One Five"?Bob Goethe3 Jan 2020, 03:13
Re: Why Can't My GNSS Receiver See Galileo?Bob Goethe19 Jan 2020, 19:27
Japanese star globeBob Goethe29 Feb 2020, 15:55
Russian mechanical navigation computerBob Goethe29 Feb 2020, 15:57
Re: Traditional navigation by slide ruleBob Goethe13 May 2020, 19:37
E.O.T. for 2020Bob Goethe30 May 2020, 18:17
Re: E.O.T. for 2020Bob Goethe30 May 2020, 20:36
Navigation system failureBob Goethe31 May 2020, 12:33
Re: Navigator's Slide RuleBob Goethe11 Jul 2020, 15:49
Re: Navigator's Slide RuleBob Goethe12 Jul 2020, 19:44
Re: Navigator's Slide RuleBob Goethe13 Jul 2020, 16:26
Re: Navigator's Slide RuleBob Goethe13 Jul 2020, 16:28
Re: Martin Creamer dies at 104Bob Goethe8 Sep 2020, 22:19
Re: Martin Creamer dies at 104Bob Goethe9 Sep 2020, 21:57
Re: USNO web app clonedBob Goethe15 Sep 2020, 11:19
Re: USNO web app clonedBob Goethe15 Sep 2020, 12:56
Definition Intercept/St. Hilaire MethodBob Goethe13 Nov 2020, 22:45
Casio fx-300ES Plus (2nd Edition)Bob Goethe13 Nov 2020, 23:11
Re: Casio fx-300ES Plus (2nd Edition)Bob Goethe14 Nov 2020, 16:03
Planetary CorrectionsBob Goethe28 Nov 2020, 16:49
Re: Latitude by Alnair : two degrees meridian altitudeBob Goethe1 Dec 2020, 02:35
Polar distance of PolarisBob Goethe7 Dec 2020, 23:14
V correction and the sunBob Goethe15 Dec 2020, 23:14
Re: V correction and the sunBob Goethe16 Dec 2020, 06:18
Bygrave Equations with a CalculatorBob Goethe25 Dec 2020, 14:59
Sides of the Navigational Triangle - Naming Conventions?Bob Goethe30 Dec 2020, 22:41
Moon meridian passageBob GW28 Sep 2020, 23:23
Re: Moon meridian passageBob GW29 Sep 2020, 08:35
Re: Moon meridian passageBob GW29 Sep 2020, 09:12
Clear side of horizon mirrors has reflecting properties.Bob GW14 Oct 2020, 09:28
Re: Clear side of horizon mirrors has reflecting properties.Bob GW14 Oct 2020, 17:21
(Almost) no shadowBob Miorelli20 Mar 2020, 20:13
Re: Navigator's Slide RuleBob Peterson13 Jul 2020, 13:50
Re: Variation or Declination?Brad Morris8 Jan 2020, 17:46
Re: Jupiter-Saturn Conjunction: 21 Dec 2020Brad Morris10 Jan 2020, 03:25
Re: Reed's Lunars Calculator AnniversaryBrad Morris11 Jan 2020, 18:56
Re: Curve fitting for noon SunBrad Morris12 Jan 2020, 23:41
Re: Curve fitting for noon SunBrad Morris13 Jan 2020, 00:52
Re: A-10 Sextant Maintenance ManualBrian Holmes25 Jun 2020, 15:12
Determination of the GHA of AriesBrian Jones9 Sep 2020, 18:40
Re: Determination of the GHA of AriesBrian Jones10 Sep 2020, 09:54
Re: Determination of the GHA of AriesBrian Jones12 Sep 2020, 15:19
Hanno Ix azimuth diagram flowchart?Brian Villmoare29 Oct 2020, 04:51
Re: Hanno Ix azimuth diagram flowchart?Brian Villmoare29 Oct 2020, 18:42
Re: Hanno Ix azimuth diagram flowchart?Brian Villmoare30 Oct 2020, 16:30
Re: Sunrise Time Sight /Amplitude LOPBrian Walton3 Mar 2020, 09:46
Re: Celestial Navigation in the British Royal NavyBrian Walton5 May 2020, 07:11
Re: A ramble on "new improved methods"Brian Walton30 Jun 2020, 03:35
Re: A ramble on "new improved methods"Brian Walton1 Jul 2020, 05:26
Re: A ramble on "new improved methods"Brian Walton1 Jul 2020, 21:05
Re: Units in NavigationBrian Walton25 Sep 2020, 04:32
Re: Units in NavigationBrian Walton26 Sep 2020, 10:17
Re: Haversines with LogarithmsBrian Walton16 Oct 2020, 07:58
Re: Haversines with LogarithmsBrian Walton17 Oct 2020, 09:01
Re: Haversines with LogarithmsBrian Walton18 Oct 2020, 14:49
Re: Haversines with LogarithmsBrian Walton20 Oct 2020, 14:45
Re: Celestial navigation: easier basic principle?Bruce Cutting26 Jan 2020, 19:10
Re: Celestial navigation: easier basic principle?Bruce Cutting27 Jan 2020, 03:23
Re: Radio from the middle of nowhereBruce Cutting29 Apr 2020, 18:15
Re: Navigator's Slide RuleBruce Cutting12 Jul 2020, 16:36
Re: Comet NeowiseBruce Cutting21 Jul 2020, 01:14
Re: CN and my PhD thesisBruce Cutting22 Aug 2020, 17:34
Re: CN and my PhD thesisBruce Cutting23 Aug 2020, 01:36
Re: CN and my PhD thesisBruce Cutting23 Aug 2020, 02:00
Re: Longitude at noonBruce Cutting9 Sep 2020, 03:45
Re: Longitude at noonBruce Cutting9 Sep 2020, 18:21
Re: Novice navigator with a Freiberger sextantBruce Cutting9 Sep 2020, 19:51
Re: Digital SextantBruce Cutting11 Sep 2020, 23:45
Re: New Soviet era sextant SNO-TBruce Cutting15 Sep 2020, 00:00
Re: New Soviet era sextant SNO-TBruce Cutting15 Sep 2020, 20:06
Re: New Soviet era sextant SNO-TBruce Cutting16 Sep 2020, 20:13
Re: New Soviet era sextant SNO-TBruce Cutting17 Sep 2020, 02:19
Re: New Soviet era sextant SNO-TBruce Cutting19 Sep 2020, 16:58
Re: Online Webex Meetings Tomorrow, Sep 20Bruce Cutting20 Sep 2020, 21:33
Re: Kollsman periscopic sextant mountBruce Cutting22 Sep 2020, 01:55
Re: US Navy MK II sextant manualBruce Cutting7 Oct 2020, 00:14
Re: Incomplete Instrument-- WWII German SoldsextantBruce Cutting29 Nov 2020, 22:39
Re: Incomplete Instrument-- WWII German SoldsextantBruce Cutting30 Nov 2020, 22:06
Re: Small craft RDF in 1967Bruce Cutting1 Dec 2020, 16:36
Timex Iron Man Watch=kaputBruce J. Pennino1 Jul 2020, 22:08
Re: Kids and the planetsBruce J. Pennino28 Jul 2020, 04:20
Re: AH Level?Bruce J. Pennino8 Aug 2020, 03:08
Moon Rise - I'm Missing SomethingBruce J. Pennino10 Aug 2020, 17:33
Re: CN and my PhD thesisBruce J. Pennino22 Aug 2020, 16:02
Re: Moon meridian passageBruce J. Pennino29 Sep 2020, 23:21
Re: Meridian transit adaptationBruce J. Pennino15 Nov 2020, 04:57
Re: Small craft RDF in 1967Casey Michael30 Nov 2020, 19:46
Maskelyne: Astronomer RoyalCharles McElhill23 Mar 2020, 16:33
Re: Maskelyne: Astronomer RoyalCharles McElhill24 Mar 2020, 12:38
Re: Maskelyne: Astronomer RoyalCharles McElhill25 Mar 2020, 21:33
Re: Timex Iron Man Watch=kaputCharles McElhill4 Jul 2020, 13:11
Re: Navigator's Slide RuleCharles McElhill19 Aug 2020, 23:38
Re: Titanic rescue attemps documentaryCharles McElhill9 Nov 2020, 23:24
Beta testers wantedChris Allison12 Sep 2020, 13:46
Re: Beta testers wantedChris Allison13 Sep 2020, 17:17
Re: Beta testers wantedChris Allison16 Sep 2020, 09:01
Re: A12 vs A8-A sextantsChris Caswell23 Mar 2020, 21:43
Re: Bausch and Lomb 5854 sextantChris Caswell6 Apr 2020, 11:30
LunarsChris Lamousin9 Mar 2020, 03:00
Re: 1st type Hand held Bagnold Sun CompassChris Post29 Nov 2020, 03:41
Re: Royal Museums Greenwich closedChris Willmes17 Mar 2020, 20:38
Re: Venus in daylightChris Willmes8 Apr 2020, 22:35
Re: Two years after Galileo: an English telescope in JapanChristopher Willmes28 Dec 2020, 18:10
Re: Two years after Galileo: an English telescope in JapanChristopher Willmes28 Dec 2020, 18:14
Looking for Kollsman MA-2 sextant in working orderChuck Killian9 Aug 2020, 01:39
Re: Latitude by Alnair : two degrees meridian altitudeD Maracle1 Dec 2020, 16:58
Re: Plot Sheet GeneratorDale Lichtblau10 Jul 2020, 21:29
Re: Harold Gatty's KamalDale Lichtblau12 Jul 2020, 13:28
Re: NavList HamsDale Lichtblau12 Jul 2020, 13:41
Re: Sun over Abu SimbelDale Lichtblau12 Jul 2020, 13:58
Re: NavList HamsDale Lichtblau14 Jul 2020, 18:48
Re: M.F. Maury and the progress of historyDale Lichtblau14 Jul 2020, 19:30
Oblate or Prolate...?Dale Lichtblau20 Jul 2020, 20:04
NavList Hams: Longitude by WireDale Lichtblau21 Jul 2020, 01:18
Re: The History of Celestial Navigation (2020)Dale Lichtblau28 Jul 2020, 00:32
Re: Oblate or Prolate...?Dale Lichtblau28 Jul 2020, 20:45
Re: The History of Celestial Navigation (2020)Dale Lichtblau28 Jul 2020, 20:48
Re: Bobby Schenk's Golden SextantDale Lichtblau4 Aug 2020, 18:26
RIP Marvin CreamerDale Lichtblau18 Aug 2020, 14:06
9th Century Lunar problem...Dale Lichtblau7 Sep 2020, 14:39
Re: Curve fitting for noon SunDave Walden14 Jan 2020, 15:10
Time lapse coastal voyage with stars (and he can use a sextant)Dave Walden17 Jan 2020, 23:55
Re: Why Can't My GNSS Receiver See Galileo?Dave Walden20 Jan 2020, 01:56
Re: Why Can't My GNSS Receiver See Galileo?Dave Walden20 Jan 2020, 03:49
Re: Satellite collision over northeast USDave Walden30 Jan 2020, 00:22
Re: Weems Star Altitude CurvesDave Walden7 Feb 2020, 23:08
Re: Please help to identify a sextantDave Walden18 Feb 2020, 16:03
Re: Martelli Table ProvenanceDave Walden24 Feb 2020, 16:12
Re: Index error vs. index correctionDave Walden21 Mar 2020, 13:04
Re: Minimum geocentric Saturn-Mars apparent angular DistanceDave Walden2 Apr 2020, 16:58
Re: Venus mer-pass for Lat, Sun time sight for Lon.Dave Walden12 Apr 2020, 01:11
Re: Venus mer-pass for Lat, Sun time sight for Lon.Dave Walden12 Apr 2020, 02:43
Re: Venus mer-pass for Lat, Sun time sight for Lon.Dave Walden12 Apr 2020, 03:38
Re: Venus mer-pass for Lat, Sun time sight for Lon.Dave Walden13 Apr 2020, 14:35
Re: Weems and Plath Celestial Slide RuleDave Walden14 Apr 2020, 22:45
Re: Venus mer-pass for Lat, Sun time sight for Lon.Dave Walden16 Apr 2020, 12:59
Hyatt's Celestial CoordinatorDave Walden26 Apr 2020, 13:49
NavlistDave Walden30 Apr 2020, 11:55
Position from altitude and azimuth.Dave Walden7 May 2020, 17:02
Re: Position from altitude and azimuth.Dave Walden8 May 2020, 11:55
Re: Position from altitude and azimuth.Dave Walden9 May 2020, 12:13
Re: Position from altitude and azimuth.Dave Walden9 May 2020, 12:34
Re: Position from altitude and azimuth.Dave Walden9 May 2020, 13:41
Re: Position from altitude and azimuth.Dave Walden11 May 2020, 03:08
Re: Position from altitude and azimuth.Dave Walden11 May 2020, 23:42
Position from two azimuthsDave Walden15 May 2020, 18:22
Re: Position from two azimuthsDave Walden16 May 2020, 13:43
Re: Position from two azimuthsDave Walden16 May 2020, 13:45
Re: Position from altitude and azimuth.Dave Walden19 May 2020, 22:18
Parallax in azimuthDave Walden24 May 2020, 16:49
Time and placeDave Walden26 May 2020, 01:10
Re: Time and placeDave Walden20 Jun 2020, 19:14
Re: Time and placeDave Walden23 Jun 2020, 20:50
Re: Ball Drop SextantDave Walden23 Jun 2020, 20:55
Re: Hybrid artificial horizonDave Walden20 Jul 2020, 11:39
Re: Beta testers wantedDave Walden13 Sep 2020, 21:18
Re: USNO web app clonedDave Walden15 Sep 2020, 12:42
Re: USNO web app clonedDave Walden17 Sep 2020, 17:35
Re: Kollsman periscopic sextant mountDave Walden21 Sep 2020, 22:49
Re: Kollsman periscopic sextant mountDave Walden23 Sep 2020, 12:09
Re: Polaris' PM in RA?Dave Walden24 Sep 2020, 21:58
Re: Polaris' PM in RA?Dave Walden24 Sep 2020, 22:03
Re: Polaris' PM in RA?Dave Walden24 Sep 2020, 22:16
Re: Polaris' PM in RA?Dave Walden24 Sep 2020, 22:55
Re: Crelle's tablesDave Walden27 Sep 2020, 12:31
Re: Crelle's tablesDave Walden27 Sep 2020, 15:22
Re: Simultaneous near limb - far limb lunarsDave Walden26 Oct 2020, 13:48
Re: Curious star chartsDave Walden18 Nov 2020, 03:34
Re: Mars N.L. Lunar by DSLR 35mm lensDave Walden27 Nov 2020, 12:32
Re: Help Please - paper by Griffiths? on all haversine methodsDave Walden29 Dec 2020, 15:29
Re: New Year's EveDavid C1 Jan 2020, 03:11
Re: New Year's EveDavid C1 Jan 2020, 04:06
Unusual SunDavid C1 Jan 2020, 06:53
Re: Unusual SunDavid C1 Jan 2020, 20:15
Re: Air Almanac 2020 full pdf now available...David C1 Jan 2020, 20:33
Beidou Network OperationalDavid C7 Jan 2020, 23:26
Variation or Declination?David C8 Jan 2020, 03:08
Re: Yellow page in NADavid C14 Jan 2020, 21:11
Designed for the use of British SeamanDavid C18 Jan 2020, 22:06
Compass CheckDavid C19 Jan 2020, 02:12
Re: Compass CheckDavid C19 Jan 2020, 07:15
Re: Compass CheckDavid C19 Jan 2020, 08:07
Re: Compass CheckDavid C20 Jan 2020, 04:27
Re: Compass CheckDavid C20 Jan 2020, 04:34
Percy Lyall Hooker Davis' High Latitude TablesDavid C21 Jan 2020, 05:45
Re: Why Can't My GNSS Receiver See Galileo?David C21 Jan 2020, 21:11
Re: Why Can't My GNSS Receiver See Galileo?David C21 Jan 2020, 21:15
Re: Why Can't My GNSS Receiver See Galileo?David C21 Jan 2020, 22:25
Re: No DR position. How can you get an accurate celestial fix?David C26 Jan 2020, 02:25
Re: No DR position. How can you get an accurate celestial fix?David C27 Jan 2020, 06:33
Scale of InterceptDavid C1 Feb 2020, 04:32
Re: Scale of InterceptDavid C1 Feb 2020, 21:19
Re: Scale of InterceptDavid C2 Feb 2020, 03:16
Re: History & development of HO-249David C4 Feb 2020, 03:10
Re: Is this a real site (celestial... .info)?David C9 Feb 2020, 08:16
Re: [OT] Browser trickDavid C2 Mar 2020, 20:41
Re: Today's sub-Sun pointDavid C3 Mar 2020, 00:40
Time of SunsetDavid C13 Mar 2020, 07:48
Re: Time of SunsetDavid C13 Mar 2020, 21:26
Re: Royal Museums Greenwich closedDavid C18 Mar 2020, 04:53
Re: GPS Anti Spoof ProDavid C27 Mar 2020, 06:24
Re: GPS Anti Spoof ProDavid C27 Mar 2020, 06:28
Re: GPS Anti Spoof ProDavid C27 Mar 2020, 06:41
Re: Venus in daylightDavid C28 Mar 2020, 02:39
Re: Venus in daylightDavid C28 Mar 2020, 23:08
Re: Venus in daylightDavid C28 Mar 2020, 23:17
Re: Venus in daylightDavid C29 Mar 2020, 21:33
Nautical Almanac AppDavid C30 Mar 2020, 21:44
Re: Venus in daylightDavid C31 Mar 2020, 04:38
Re: Bagnold Sun CompassDavid C31 Mar 2020, 06:16
Re: Venus in daylightDavid C31 Mar 2020, 21:30
Re: Venus in daylightDavid C31 Mar 2020, 21:36
Re: Venus in daylightDavid C1 Apr 2020, 05:02
Re: Venus in daylightDavid C1 Apr 2020, 06:38
Re: Celestial in the Age of Sail, April 7-9, onlineDavid C1 Apr 2020, 20:32
Re: Nautical Almanac AppDavid C3 Apr 2020, 21:49
Re: Nautical Almanac AppDavid C3 Apr 2020, 22:41
Re: Nautical Almanac AppDavid C3 Apr 2020, 22:51
Re: Nautical Almanac AppDavid C4 Apr 2020, 21:35
Re: Venus in daylightDavid C5 Apr 2020, 22:19
Re: Nautical Almanac AppDavid C5 Apr 2020, 22:29
Re: Venus in daylightDavid C7 Apr 2020, 00:13
Re: Celestial in the Age of Sail, April 7-9, onlineDavid C8 Apr 2020, 02:07
Re: Venus in daylightDavid C8 Apr 2020, 02:22
Re: Venus in daylightDavid C8 Apr 2020, 07:05
Anti-spoof appDavid C11 Apr 2020, 00:47
Re: Venus mer-pass for Lat, Sun time sight for Lon.David C11 Apr 2020, 00:52
Re: Anti-spoof appDavid C11 Apr 2020, 21:07
Re: Anti-spoof appDavid C12 Apr 2020, 00:14
Re: Anti-spoof appDavid C12 Apr 2020, 02:45
Hughes, Dreisonstok and dec~latDavid C13 Apr 2020, 21:58
Re: Anti-spoof appDavid C14 Apr 2020, 22:54
Re: NavList social sessions LIVE todayDavid C15 Apr 2020, 01:50
Precepts - or how to make things more complicated than they really areDavid C18 Apr 2020, 21:44
HO 200 AquinoDavid C19 Apr 2020, 02:46
Re: HO 200 AquinoDavid C19 Apr 2020, 22:11
HO 200 Copyright InfringementDavid C20 Apr 2020, 03:51
Re: HO 200 Copyright InfringementDavid C20 Apr 2020, 05:05
Ogura's Short Method for Altitude (aka Nories' A_K table)David C21 Apr 2020, 07:01
Re: Anti-spoof appDavid C21 Apr 2020, 22:05
Re: Sign of d in HO249David C23 Apr 2020, 22:23
Change of assumed position terminologyDavid C25 Apr 2020, 01:56
Re: Lockdown Escape (Madness?)David C28 Apr 2020, 00:53
Re: Lockdown Escape (Madness?)David C29 Apr 2020, 03:26
Hav-Doniol re-visitedDavid C29 Apr 2020, 22:13
Re: Lockdown Escape (Madness?)David C29 Apr 2020, 23:40
Re: Radio from the middle of nowhereDavid C29 Apr 2020, 23:59
Re: Lockdown Escape (Madness?)David C30 Apr 2020, 04:50
Re: Calculators "old technology"David C30 Apr 2020, 22:15
Re: Lockdown Escape (Madness?)David C30 Apr 2020, 22:28
Smart and Shearme Position Line TablesDavid C3 May 2020, 00:08
Re: Smart and Shearme Position Line TablesDavid C3 May 2020, 09:43
Re: Smart and Shearme Position Line TablesDavid C3 May 2020, 21:38
Re: Smart and Shearme Position Line TablesDavid C3 May 2020, 21:53
Re: Smart and Shearme Position Line TablesDavid C3 May 2020, 23:45
Re: Smart and Shearme Position Line TablesDavid C6 May 2020, 04:25
Re: Smart and Shearme Position Line TablesDavid C6 May 2020, 22:30
Re: Position from altitude and azimuth.David C8 May 2020, 04:49
Re: Intercept Method or Marcq St. HilaireDavid C14 May 2020, 08:35
Ex-Meridian Sight using InmansDavid C10 Jun 2020, 10:01
Re: Ex-Meridian Sight using InmansDavid C10 Jun 2020, 19:45
Re: Ex-Meridian Sight using InmansDavid C10 Jun 2020, 20:08
Re: Ex-Meridian Sight using InmansDavid C11 Jun 2020, 04:54
EOT Will Change Sign In Thirteen Hours TimeDavid C12 Jun 2020, 03:20
Re: Ex-Meridian Sight using InmansDavid C14 Jun 2020, 05:34
Re: Comedy on the Greenwich MeridianDavid C16 Jun 2020, 05:48
Winter Solstice and a Moon EclipseDavid C21 Jun 2020, 01:33
Re: Winter Solstice and a Moon EclipseDavid C21 Jun 2020, 06:49
Re: Winter Solstice and a Moon EclipseDavid C21 Jun 2020, 06:51
Sun's GenderDavid C21 Jun 2020, 07:08
A ramble on "new improved methods"David C28 Jun 2020, 04:52
Re: A ramble on "new improved methods"David C28 Jun 2020, 20:12
Re: A ramble on "new improved methods"David C29 Jun 2020, 21:02
Re: A ramble on "new improved methods"David C30 Jun 2020, 20:43
Re: A ramble on "new improved methods"David C30 Jun 2020, 22:25
Re: Burton's Nautical TablesDavid C2 Jul 2020, 22:04
Re: Online Meetings SundayDavid C5 Jul 2020, 04:02
Longitude by unequal altitudes - BrentDavid C6 Jul 2020, 03:14
Re: Online Meetings SundayDavid C6 Jul 2020, 03:20
Re: Longitude by unequal altitudes - BrentDavid C7 Jul 2020, 02:53
Re: Longitude by unequal altitudes - BrentDavid C7 Jul 2020, 04:53
Re: Longitude by unequal altitudes - BrentDavid C13 Jul 2020, 05:30
Re: Venus in daylight this monthDavid C13 Jul 2020, 19:11
Re: Venus in daylight this monthDavid C15 Jul 2020, 04:56
Re: Venus in daylight this monthDavid C15 Jul 2020, 05:14
Re: Venus in daylight this monthDavid C15 Jul 2020, 21:15
Re: Dip Short DSLR Camera CN SunDavid C20 Jul 2020, 22:26
Re: Dip Short DSLR Camera CN SunDavid C21 Jul 2020, 02:30
Re: Dip Short DSLR Camera CN SunDavid C21 Jul 2020, 03:01
Re: Burton's Nautical TablesDavid C26 Jul 2020, 03:07
Re: Hybrid artificial horizonDavid C26 Jul 2020, 03:31
Re: Hybrid artificial horizonDavid C26 Jul 2020, 05:02
Re: Hybrid artificial horizonDavid C26 Jul 2020, 21:26
Re: Venus in daylight this weekDavid C27 Jul 2020, 06:10
Re: Venus in daylight this weekDavid C27 Jul 2020, 20:16
Re: Kids and the planetsDavid C27 Jul 2020, 21:19
Re: Kids and the planetsDavid C28 Jul 2020, 02:51
Re: Kids and the planetsDavid C28 Jul 2020, 07:27
Re: The History of Celestial Navigation (2020)David C31 Jul 2020, 05:46
Re: RCC's log archiveDavid C3 Aug 2020, 05:49
Re: AH Level?David C7 Aug 2020, 21:46
Re: Navigation TablesDavid C9 Aug 2020, 20:01
Re: Navigation TablesDavid C10 Aug 2020, 03:10
Re: Moon Rise - I'm Missing SomethingDavid C10 Aug 2020, 23:01
Re: Sextant certificate with a graphDavid C16 Aug 2020, 21:32
Re: Bausch and Lomb A8-A Reconditioned Bubble Sextant For SaleDavid C16 Aug 2020, 21:50
Long by Chron - Wikipedia articleDavid C17 Aug 2020, 03:07
Re: Long by Chron - Wikipedia articleDavid C17 Aug 2020, 03:13
Re: Long by Chron - Wikipedia articleDavid C17 Aug 2020, 21:19
What time is it?David C23 Aug 2020, 04:31
Re: What time is it?David C23 Aug 2020, 07:42
Re: What time is it?David C23 Aug 2020, 07:54
Re: What time is it?David C23 Aug 2020, 09:03
Re: What time is it?David C23 Aug 2020, 22:14
Re: What time is it?David C23 Aug 2020, 23:05
Re: Longitude at noonDavid C9 Sep 2020, 04:24
Re: Longitude at noonDavid C9 Sep 2020, 05:26
Re: Determination of the GHA of AriesDavid C10 Sep 2020, 04:49
Re: Problem with Frank Reed updated online almanacDavid C10 Sep 2020, 20:44
Re: Determination of the GHA of AriesDavid C11 Sep 2020, 07:55
Re: Beta testers wantedDavid C13 Sep 2020, 22:43
Significant moment in Atlantic oceanDavid C14 Sep 2020, 00:07
Re: Beta testers wantedDavid C14 Sep 2020, 02:12
Re: USNO web app clonedDavid C15 Sep 2020, 21:01
Re: Single LOP is enough?David C15 Sep 2020, 21:17
Towson's tables?David C17 Sep 2020, 23:19
Re: Towson's tables?David C18 Sep 2020, 22:53
Re: Towson's tables?David C19 Sep 2020, 03:11
Re: Towson's tables?David C19 Sep 2020, 03:44
Re: Towson's tables?David C19 Sep 2020, 04:22
Re: Towson's tables?David C19 Sep 2020, 22:36
Re: Equinox at 13:30 UT... the Sun is heading south!David C22 Sep 2020, 22:56
Re: Equinox at 13:30 UT... the Sun is heading south!David C24 Sep 2020, 22:55
Re: Units in NavigationDavid C25 Sep 2020, 22:22
Re: Units in NavigationDavid C25 Sep 2020, 23:11
Re: Units in NavigationDavid C26 Sep 2020, 21:27
Crelle's tablesDavid C27 Sep 2020, 02:10
Re: Units in NavigationDavid C27 Sep 2020, 22:05
Re: Crelle's tablesDavid C27 Sep 2020, 22:29
Re: Units in NavigationDavid C27 Sep 2020, 22:41
Re: Crelle's tablesDavid C28 Sep 2020, 04:34
Re: GHA of the MoonDavid C3 Oct 2020, 00:26
Re: GHA of the MoonDavid C3 Oct 2020, 08:01
Re: Old navigation books collectionDavid C6 Oct 2020, 04:35
Re: Time sight primerDavid C10 Oct 2020, 08:45
Re: Time sight primerDavid C11 Oct 2020, 02:41
Re: Haversines with LogarithmsDavid C12 Oct 2020, 03:41
Re: Haversines with LogarithmsDavid C13 Oct 2020, 02:40
Re: Haversines with LogarithmsDavid C13 Oct 2020, 19:49
Re: Experience with an artifical horizonDavid C14 Oct 2020, 04:44
Re: Clear side of horizon mirrors has reflecting properties.David C14 Oct 2020, 18:09
Re: Haversines with LogarithmsDavid C14 Oct 2020, 18:51
Re: Haversines with LogarithmsDavid C14 Oct 2020, 18:54
Re: Haversines with LogarithmsDavid C16 Oct 2020, 21:12
Re: Crelle's tablesDavid C17 Oct 2020, 04:29
Re: Crelle's tablesDavid C17 Oct 2020, 05:52
Re: Crelle's tablesDavid C17 Oct 2020, 20:00
Re: Haversines with LogarithmsDavid C19 Oct 2020, 02:05
Re: Haversines with LogarithmsDavid C19 Oct 2020, 04:26
Re: Haversines with LogarithmsDavid C19 Oct 2020, 21:14
Re: Hav-Doniol re-visitedDavid C22 Oct 2020, 20:39
Re: Hav-Doniol re-visitedDavid C25 Oct 2020, 04:08
Re: Hanno Ix azimuth diagram flowchart?David C30 Oct 2020, 01:48
Re: Hanno Ix azimuth diagram flowchart?David C30 Oct 2020, 02:05
Re: Hanno Ix azimuth diagram flowchart?David C30 Oct 2020, 21:16
Re: Hanno Ix azimuth diagram flowchart?David C30 Oct 2020, 22:52
Lecky's mistakeDavid C31 Oct 2020, 03:20
Re: Lecky's mistakeDavid C31 Oct 2020, 20:53
Cloudy Weather Johnson's Double Chronometer MethodDavid C2 Nov 2020, 03:52
Re: Cloudy Weather Johnson's Double Chronometer MethodDavid C2 Nov 2020, 20:49
Re: Cloudy Weather Johnson's Double Chronometer MethodDavid C2 Nov 2020, 22:06
Edward J WillisDavid C6 Nov 2020, 03:04
Re: Edward J WillisDavid C6 Nov 2020, 07:33
Re: Where are we NavigatorDavid C6 Nov 2020, 21:29
Re: Edward J WillisDavid C6 Nov 2020, 21:35
Re: Where are we NavigatorDavid C6 Nov 2020, 21:44
Re: Edward J WillisDavid C7 Nov 2020, 00:31
Re: Edward J WillisDavid C7 Nov 2020, 00:51
Re: Edward J WillisDavid C7 Nov 2020, 05:52
Re: Edward J WillisDavid C7 Nov 2020, 08:50
Re: Edward J WillisDavid C7 Nov 2020, 22:02
Re: Edward J WillisDavid C9 Nov 2020, 03:37
Re: Titanic rescue attemps documentaryDavid C9 Nov 2020, 19:59
Re: Casio fx-300ES Plus (2nd Edition)David C14 Nov 2020, 03:18
Re: I'm forever blowing (sextant) bubblesDavid C25 Nov 2020, 02:32
Re: South Pole CelestialDavid C25 Nov 2020, 20:16
Re: Latitude by Alnair : two degrees meridian altitudeDavid C1 Dec 2020, 20:21
Re: Poor BecruxDavid C7 Dec 2020, 07:53
Re: Beta Cap -- the tenth lunars starDavid C12 Dec 2020, 05:13
Re: Saturn and Jupiter: one degree separationDavid C12 Dec 2020, 21:53
The Great ConjunctionDavid C21 Dec 2020, 21:21
Re: Bygrave Equations with a CalculatorDavid C26 Dec 2020, 03:17
Re: Bygrave Equations with a CalculatorDavid C26 Dec 2020, 07:35
Re: Curve fitting for noon SunDavid Fleming13 Jan 2020, 00:19
Re: Comedy on the Greenwich MeridianDavid Fleming16 Jun 2020, 18:35
Re: Average altitude of a celestial sightDavid Fleming18 Aug 2020, 02:06
Re: Determination of the GHA of AriesDavid Fleming9 Sep 2020, 23:00
Re: Determination of the GHA of AriesDavid Fleming10 Sep 2020, 18:14
Re: Moon meridian passageDavid Fleming29 Sep 2020, 00:57
Re: Experience with an artifical horizonDavid Fleming16 Oct 2020, 03:03
Re: Simultaneous near limb - far limb lunarsDavid Fleming25 Oct 2020, 19:47
Re: Two years after Galileo: an English telescope in JapanDavid Fleming28 Dec 2020, 19:38
Re: Two years after Galileo: an English telescope in JapanDavid Fleming28 Dec 2020, 22:23
1st type Hand held Bagnold Sun CompassDavid Harrison28 Nov 2020, 01:10
Re: 1st type Hand held Bagnold Sun CompassDavid Harrison28 Nov 2020, 22:56
Re: 1st type Hand held Bagnold Sun CompassDavid Harrison30 Nov 2020, 01:46
Re: 1st type Hand held Bagnold Sun CompassDavid Harrison30 Nov 2020, 01:49
Re: 1st type Hand held Bagnold Sun CompassDavid Harrison30 Nov 2020, 01:51
Re: 1st type Hand held Bagnold Sun CompassDavid Harrison30 Nov 2020, 02:45
Re: 1st type Hand held Bagnold Sun CompassDavid Harrison2 Dec 2020, 12:34
Re: Position bias from UTCDavid Iwancio4 Jan 2020, 20:51
Re: Position bias from UTCDavid Iwancio9 Jan 2020, 11:33
Re: Yellow page in NADavid Iwancio14 Jan 2020, 06:49
Re: Yellow page in NADavid Iwancio14 Jan 2020, 22:33
Re: Cosine formula to solve a right spherical triangle?David Iwancio21 Jan 2020, 18:27
Re: No DR position. How can you get an accurate celestial fix?David Iwancio22 Jan 2020, 09:02
Re: Cosine formula to solve a right spherical triangle?David Iwancio22 Jan 2020, 23:54
HMNAO Websites Down Too?David Iwancio27 Jan 2020, 07:38
Re: HMNAO Websites Down Too?David Iwancio27 Jan 2020, 16:22
Re: Earliest Crescent Moon VisibilityDavid Iwancio27 Jan 2020, 17:21
Re: What does the Analemma depict?David Iwancio12 Feb 2020, 22:27
Two Bodies + Angle Between Them = Third LoPDavid Iwancio17 Feb 2020, 19:10
Re: Two Bodies + Angle Between Them = Third LoPDavid Iwancio17 Feb 2020, 21:03
Re: Two Bodies + Angle Between Them = Third LoPDavid Iwancio19 Feb 2020, 10:28
Re: Two Bodies + Angle Between Them = Third LoPDavid Iwancio19 Feb 2020, 22:46
Re: ChronographDavid Iwancio5 Mar 2020, 03:46
Re: Sign of d in HO249David Iwancio24 Apr 2020, 07:31
Re: Sign of d in HO249David Iwancio25 Apr 2020, 02:20
Re: Lockdown Escape (Madness?)David Iwancio27 Apr 2020, 15:21
Re: Calculators "old technology"David Iwancio1 May 2020, 19:40
Re: Equal Azimuth LinesDavid Iwancio13 May 2020, 20:19
Re: Equal Azimuth LinesDavid Iwancio14 May 2020, 01:52
Re: Moon corrections: how computation order affects the resultDavid Iwancio1 Sep 2020, 07:56
Re: Moon corrections: how computation order affects the resultDavid Iwancio2 Sep 2020, 11:40
Re: Moon corrections: how computation order affects the resultDavid Iwancio2 Sep 2020, 12:08
Re: Moon corrections: how computation order affects the resultDavid Iwancio3 Sep 2020, 21:50
Re: Determination of the GHA of AriesDavid Iwancio9 Sep 2020, 23:22
Re: Digital SextantDavid Iwancio10 Sep 2020, 18:30
Re: Determination of the GHA of AriesDavid Iwancio10 Sep 2020, 19:14
Re: SD topocentric formulaDavid Iwancio11 Sep 2020, 21:01
Re: USNO web app clonedDavid Iwancio16 Sep 2020, 18:59
Re: Units in NavigationDavid Iwancio24 Sep 2020, 18:18
Re: Units in NavigationDavid Iwancio27 Sep 2020, 08:22
Re: GHA of the MoonDavid Iwancio2 Oct 2020, 00:05
Re: GHA of the MoonDavid Iwancio3 Oct 2020, 18:25
Re: Experience with an artifical horizonDavid Iwancio14 Oct 2020, 07:05
Re: Experience with an artifical horizonDavid Iwancio18 Oct 2020, 17:07
Re: Curious sextant add-onDavid Iwancio21 Oct 2020, 18:10
Re: Curious sextant add-onDavid Iwancio22 Oct 2020, 16:26
Re: Astronomy or AstrologyDavid Iwancio13 Nov 2020, 07:01
Re: Planetary CorrectionsDavid Iwancio28 Nov 2020, 20:53
Re: Polaris LunarsDavid Iwancio5 Dec 2020, 03:41
Re: Polaris LunarsDavid Iwancio7 Dec 2020, 08:52
Re: V correction and the sunDavid Iwancio18 Dec 2020, 03:53
Re: Sides of the Navigational Triangle - Naming Conventions?David Iwancio31 Dec 2020, 01:25
Lars Bergman - Worsleys LogbookDavid Mearns30 Oct 2020, 18:17
Re: Correcting for the movement of an observer: a plausible explanation?David Pike1 Jan 2020, 20:03
Re: Dating Hughes and Son sextantsDavid Pike4 Jan 2020, 23:07
Re: Navigating in Microsoft Flight SimulatorDavid Pike6 Jan 2020, 09:21
Re: Navigating in Microsoft Flight SimulatorDavid Pike6 Jan 2020, 19:50
Re: Navigating in Microsoft Flight SimulatorDavid Pike6 Jan 2020, 23:54
Re: Variation or Declination?David Pike8 Jan 2020, 16:40
Re: SpaceX Starlink launch: photo celestialDavid Pike8 Jan 2020, 22:34
Re: SpaceX Starlink launch: photo celestialDavid Pike9 Jan 2020, 10:34
Re: RAF Air Navigation: listing on ebayDavid Pike9 Jan 2020, 21:59
Re: SpaceX Starlink launch: photo celestialDavid Pike9 Jan 2020, 22:35
Re: SpaceX Starlink launch: photo celestialDavid Pike12 Jan 2020, 09:08
Re: Yellow page in NADavid Pike13 Jan 2020, 17:49
Re: SpaceX Starlink launch: photo celestialDavid Pike14 Jan 2020, 09:00
Re: SpaceX Starlink launch: photo celestialDavid Pike14 Jan 2020, 22:52
Re: SpaceX Starlink launch: photo celestialDavid Pike15 Jan 2020, 08:32
Re: RAF Air Navigation: listing on ebayDavid Pike15 Jan 2020, 19:36
Re: Hardly ever get an LOP than 20 NM - why?David Pike17 Jan 2020, 10:31
Re: RAF Air Navigation: listing on ebayDavid Pike17 Jan 2020, 14:01
Re: No DR position. How can you get an accurate celestial fix?David Pike19 Jan 2020, 18:47
Re: Cold War Sun HoursDavid Pike19 Jan 2020, 19:08
Re: No DR position. How can you get an accurate celestial fix?David Pike19 Jan 2020, 19:40
Re: Why Can't My GNSS Receiver See Galileo?David Pike22 Jan 2020, 21:16
Re: Captain Cook & celestial navigationDavid Pike22 Jan 2020, 22:32
Re: No DR position. How can you get an accurate celestial fix?David Pike24 Jan 2020, 19:41
Re: No DR position. How can you get an accurate celestial fix?David Pike25 Jan 2020, 08:07
Re: Navigation devices available now on ebay.David Pike25 Jan 2020, 19:40
Re: Navigation devices available now on ebay.David Pike26 Jan 2020, 09:05
Re: Captain Cook & celestial navigationDavid Pike29 Jan 2020, 19:36
Re: Sky & Telescope Magazine article on Capt. Cook's AstronomyDavid Pike29 Jan 2020, 21:08
Re: GPS Anti Spoof based on radio sextant ?David Pike30 Jan 2020, 11:50
Re: Scale of InterceptDavid Pike1 Feb 2020, 19:01
A postage stamp on a football?? – try a cricket ball.David Pike2 Feb 2020, 10:28
Re: Kollsman periscopic sextant mountDavid Pike9 Feb 2020, 12:57
Re: A-12 ExperiencesDavid Pike10 Feb 2020, 19:47
Re: A-12 ExperiencesDavid Pike11 Feb 2020, 19:19
Re: Please help to identify a sextantDavid Pike17 Feb 2020, 23:22
Re: Please help to identify a sextantDavid Pike18 Feb 2020, 13:31
Re: Please help to identify a sextantDavid Pike18 Feb 2020, 19:33
Re: Artificial horizon: gyro vs bubble?David Pike19 Feb 2020, 18:36
Re: Artificial horizon: gyro vs bubble?David Pike20 Feb 2020, 17:15
Re: Artificial horizon: gyro vs bubble?David Pike24 Feb 2020, 22:07
Re: Choosing right A-10: how to?David Pike27 Feb 2020, 10:30
Katherine JohnsonDavid Pike27 Feb 2020, 19:37
Re: Choosing right A-10: how to?David Pike27 Feb 2020, 20:58
Re: Choosing right A-10: how to?David Pike27 Feb 2020, 21:30
Re: Choosing right A-10: how to?David Pike1 Mar 2020, 20:01
Re: [OT] Browser trickDavid Pike1 Mar 2020, 22:24
Re: Choosing right A-10: how to?David Pike2 Mar 2020, 11:20
Re: Archive of HMS Bounty fatefulvoyage.comDavid Pike3 Mar 2020, 20:40
Re: Grand Princess and Plague flagDavid Pike17 Mar 2020, 20:02
Navigation webinarsDavid Pike19 Mar 2020, 21:36
Re: Please help to identify a sextantDavid Pike20 Mar 2020, 21:15
Re: Please help to identify a sextantDavid Pike21 Mar 2020, 09:57
Re: Please help to identify a sextantDavid Pike21 Mar 2020, 22:15
Re: Please help to identify a sextantDavid Pike22 Mar 2020, 10:28
Using Photographs from the wwwDavid Pike22 Mar 2020, 13:37
Re: Maskelyne: Astronomer RoyalDavid Pike24 Mar 2020, 21:16
Re: GPS Anti Spoof ProDavid Pike26 Mar 2020, 23:11
Re: GPS Anti Spoof ProDavid Pike27 Mar 2020, 08:40
Re: Venus in daylightDavid Pike29 Mar 2020, 09:46
Re: Navigation webinarsDavid Pike31 Mar 2020, 13:29
Re: Venus in daylightDavid Pike5 Apr 2020, 13:54
Re: Venus in daylightDavid Pike7 Apr 2020, 20:36
Re: Venus in daylightDavid Pike8 Apr 2020, 14:41
Re: Weems and Plath Celestial Slide RuleDavid Pike8 Apr 2020, 20:39
Re: Venus in daylightDavid Pike8 Apr 2020, 21:12
Re: Venus in daylightDavid Pike9 Apr 2020, 18:52
Re: Weems and Plath Celestial Slide RuleDavid Pike10 Apr 2020, 09:04
Re: Weems and Plath Celestial Slide RuleDavid Pike11 Apr 2020, 16:52
Referring to Eds Daves & Davids for exampleDavid Pike11 Apr 2020, 17:07
Re: Weems and Plath Celestial Slide RuleDavid Pike12 Apr 2020, 09:18
Re: Weems and Plath Celestial Slide RuleDavid Pike12 Apr 2020, 10:21
Re: NavList social sessions LIVE todayDavid Pike18 Apr 2020, 19:29
Re: Sign of d in HO249David Pike22 Apr 2020, 21:45
Re: Sign of d in HO249David Pike23 Apr 2020, 17:06
Re: Sign of d in HO249David Pike23 Apr 2020, 19:08
Re: Sign of d in HO249David Pike23 Apr 2020, 19:08
Re: Sign of d in HO249David Pike24 Apr 2020, 07:07
Paper: Geometry of Elliptical Probability Contours...David Pike24 Apr 2020, 16:07
Re: Sign of d in HO249David Pike24 Apr 2020, 19:51
Re: Sign of d in HO249David Pike25 Apr 2020, 12:58
Re: Sign of d in HO249David Pike26 Apr 2020, 12:40
Re: A12 vs A8-A sextantsDavid Pike26 Apr 2020, 13:07
Re: Sign of d in HO249David Pike26 Apr 2020, 17:56
Re: A12 vs A8-A sextantsDavid Pike28 Apr 2020, 10:41
Re: Radio from the middle of nowhereDavid Pike30 Apr 2020, 08:24
Re: Smart and Shearme Position Line TablesDavid Pike3 May 2020, 21:35
Re: Celestial Navigation in the British Royal NavyDavid Pike5 May 2020, 07:55
Re: Smart and Shearme Position Line TablesDavid Pike5 May 2020, 10:25
Re: Smart and Shearme Position Line TablesDavid Pike5 May 2020, 10:52
Re: Smart and Shearme Position Line TablesDavid Pike5 May 2020, 17:40
Re: Smart and Shearme Position Line TablesDavid Pike5 May 2020, 20:50
Re: Smart and Shearme Position Line TablesDavid Pike6 May 2020, 16:36
Re: Smart and Shearme Position Line TablesDavid Pike7 May 2020, 08:43
A Lancaster Navigator's Logs and Charts AnalysedDavid Pike7 May 2020, 19:24
75th Anniversary of first Aries polar flightDavid Pike11 May 2020, 09:22
Re: A Lancaster Navigator's Logs and Charts AnalysedDavid Pike11 May 2020, 19:41
Re: Beginning celestial navigation methodDavid Pike13 May 2020, 13:57
Re: Beginning celestial navigation methodDavid Pike13 May 2020, 20:27
Re: A Lancaster Navigator's Logs and Charts AnalysedDavid Pike13 May 2020, 21:28
Re: Beginning celestial navigation methodDavid Pike15 May 2020, 09:24
Re: Position from two azimuthsDavid Pike16 May 2020, 09:57
Re: Position from two azimuthsDavid Pike16 May 2020, 20:48
Re: A Lancaster Navigator's Logs and Charts AnalysedDavid Pike18 May 2020, 20:25
Re: Position from altitude and azimuth.David Pike19 May 2020, 23:30
Re: Position from altitude and azimuth.David Pike20 May 2020, 06:30
Re: Position from altitude and azimuth.David Pike20 May 2020, 16:20
Re: Position from altitude and azimuth.David Pike20 May 2020, 19:43
Re: Position from altitude and azimuth.David Pike21 May 2020, 17:46
Re: Sights with just azimuthDavid Pike23 May 2020, 08:45
Re: ADMIN: The 21st Century Awaits...David Pike24 May 2020, 13:18
Re: Parallax in azimuthDavid Pike24 May 2020, 20:30
Re: Sights with just azimuthDavid Pike29 May 2020, 07:47
Re: Automated celnav in the newsDavid Pike30 May 2020, 19:10
Free webinar GNSS SupercorrelationDavid Pike9 Jun 2020, 18:02
Re: Free webinar GNSS SupercorrelationDavid Pike11 Jun 2020, 18:30
Re: Free webinar GNSS SupercorrelationDavid Pike16 Jun 2020, 09:36
Re: My sextant repairDavid Pike18 Jun 2020, 09:40
Webinar – When GNSS fails, what will you do? Marrinav!David Pike21 Jun 2020, 19:29
Re: Webinar – When GNSS fails, what will you do? Marrinav!David Pike25 Jun 2020, 10:56
Re: Webinar – When GNSS fails, what will you do? Marrinav!David Pike25 Jun 2020, 14:34
Re: Sextant Collimation ErrorDavid Pike25 Jun 2020, 16:34
Re: Sextant Collimation ErrorDavid Pike25 Jun 2020, 23:14
Re: Sextant Collimation ErrorDavid Pike27 Jun 2020, 10:31
Re: Sextant Collimation ErrorDavid Pike28 Jun 2020, 15:13
Re: Sextant Collimation ErrorDavid Pike28 Jun 2020, 16:47
Re: Online Meetings SundayDavid Pike5 Jul 2020, 20:56
Re: Online Meetings SundayDavid Pike8 Jul 2020, 21:00
Re: Venus in daylight this monthDavid Pike14 Jul 2020, 07:49
Re: Venus in daylight this monthDavid Pike14 Jul 2020, 18:29
RAF O6a CompassDavid Pike17 Jul 2020, 12:01
WEBINAR: Demystifying Contact Tracing AppsDavid Pike17 Jul 2020, 13:36
Re: RAF O6a CompassDavid Pike18 Jul 2020, 20:49
Re: RAF O6a CompassDavid Pike18 Jul 2020, 21:21
Re: More Cocked HatsDavid Pike19 Jul 2020, 07:48
Re: Comet NeowiseDavid Pike20 Jul 2020, 23:56
Re: Comet NeowiseDavid Pike21 Jul 2020, 09:03
Re: Comet NeowiseDavid Pike21 Jul 2020, 10:05
Re: Hybrid artificial horizonDavid Pike27 Jul 2020, 11:34
Kids and the planetsDavid Pike27 Jul 2020, 12:01
Amazon to launch 3000 communication satellitesDavid Pike31 Jul 2020, 19:58
Re: Expensive toysDavid Pike4 Aug 2020, 10:48
Quantum Sensors in Navigation - Free Webinar Monday 10th AugustDavid Pike9 Aug 2020, 14:03
Re: Quantum Sensors in Navigation - Free Webinar Monday 10th AugustDavid Pike10 Aug 2020, 21:29
Re: Moon Rise - I'm Missing SomethingDavid Pike10 Aug 2020, 21:51
Re: Sextant certificate with a graphDavid Pike16 Aug 2020, 19:06
Re: Sextant certificate with a graphDavid Pike16 Aug 2020, 19:21
Re: Sextant certificate with a graphDavid Pike17 Aug 2020, 07:28
Re: Sextant certificate with a graphDavid Pike17 Aug 2020, 08:10
Re: Navigator's Slide RuleDavid Pike18 Aug 2020, 21:59
Re: Navigator's Slide RuleDavid Pike19 Aug 2020, 15:38
Who's that hiding behind Jupiter?David Pike20 Aug 2020, 20:47
Re: Who's that hiding behind Jupiter?David Pike21 Aug 2020, 18:49
Re: Kollsman periscopic sextant mountDavid Pike3 Sep 2020, 13:57
Re: NO Online Meetings TomorrowDavid Pike6 Sep 2020, 07:15
Re: Hezzanith SextantDavid Pike7 Sep 2020, 14:29
Free Webinar: POSITIONS OF TRUST: Can we work with Navigation Systems we struggle to understand?David Pike8 Sep 2020, 18:29
Re: Digital SextantDavid Pike11 Sep 2020, 10:40
Re: Kollsman periscopic sextant mountDavid Pike21 Sep 2020, 20:39
Toy ship begins journeyDavid Pike24 Sep 2020, 09:50
Re: Units in NavigationDavid Pike24 Sep 2020, 16:46
Re: Toy ship begins journeyDavid Pike24 Sep 2020, 16:58
Re: Toy ship begins journeyDavid Pike25 Sep 2020, 11:42
Re: Units in NavigationDavid Pike25 Sep 2020, 19:59
Re: Units in NavigationDavid Pike26 Sep 2020, 12:45
Re: Units in NavigationDavid Pike26 Sep 2020, 19:37
Re: Units in NavigationDavid Pike28 Sep 2020, 21:59
Navigation Systems: online lectureDavid Pike29 Sep 2020, 15:42
Re: Navigation Systems: online lectureDavid Pike30 Sep 2020, 07:33
Re: Navigation Systems: online lectureDavid Pike2 Oct 2020, 15:16
Re: Distance by Vertical AngleDavid Pike6 Oct 2020, 23:16
Re: Battenberg manualsDavid Pike7 Oct 2020, 17:54
Re: Battenberg manualsDavid Pike7 Oct 2020, 18:02
Free Webinar on 17th & 18th Century Marine NavigationDavid Pike7 Oct 2020, 18:24
Re: Battenberg manualsDavid Pike7 Oct 2020, 23:26
Re: Free Webinar on 17th & 18th Century Marine NavigationDavid Pike8 Oct 2020, 18:38
Re: Free Webinar on 17th & 18th Century Marine NavigationDavid Pike8 Oct 2020, 20:56
Re: Battenberg manualsDavid Pike8 Oct 2020, 22:54
Re: Battenberg manualsDavid Pike8 Oct 2020, 23:11
Navigation Training at Sea and in the Air - Free Online SeminarDavid Pike12 Oct 2020, 19:00
Re: Battenberg manualsDavid Pike13 Oct 2020, 18:42
Re: Clear side of horizon mirrors has reflecting properties.David Pike14 Oct 2020, 15:53
Re: Clear side of horizon mirrors has reflecting properties.David Pike14 Oct 2020, 19:55
Re: Navigation Training at Sea and in the Air - Free Online SeminarDavid Pike15 Oct 2020, 16:29
Re: Clear side of horizon mirrors has reflecting properties.David Pike16 Oct 2020, 08:49
Re: Navigation Training at Sea and in the Air - Free Online SeminarDavid Pike16 Oct 2020, 20:21
Re: Navigation Training at Sea and in the Air - Free Online SeminarDavid Pike17 Oct 2020, 09:14
Re: Clear side of horizon mirrors has reflecting properties.David Pike17 Oct 2020, 19:54
Re: Haversines with LogarithmsDavid Pike18 Oct 2020, 19:39
Re: USAF smartphone celestial patentDavid Pike19 Oct 2020, 08:38
Re: Navigation Training at Sea and in the Air - Free Online SeminarDavid Pike19 Oct 2020, 15:56
Re: USAF smartphone celestial patentDavid Pike19 Oct 2020, 16:22
Re: USAF smartphone celestial patentDavid Pike19 Oct 2020, 16:34
Re: Curious sextant add-onDavid Pike22 Oct 2020, 17:10
Re: Navigation Training at Sea and in the Air - Free Online SeminarDavid Pike22 Oct 2020, 18:25
Re: Curious sextant add-onDavid Pike22 Oct 2020, 19:56
Re: Live, interactive "Office Hours" Oct 23 and Oct 25 (Friday and Sunday)David Pike23 Oct 2020, 08:45
“The Dutch Raid on the Medway 1667 ” Free online webinarDavid Pike28 Oct 2020, 11:28
Re: Lecky's mistakeDavid Pike31 Oct 2020, 12:44
Re: Lecky's mistakeDavid Pike31 Oct 2020, 19:55
Re: Lecky's mistakeDavid Pike1 Nov 2020, 20:53
Re: Edward J WillisDavid Pike6 Nov 2020, 17:28
Where are we NavigatorDavid Pike6 Nov 2020, 17:49
Re: Where are we NavigatorDavid Pike7 Nov 2020, 00:14
Re: Edward J WillisDavid Pike7 Nov 2020, 00:26
Re: Where are we NavigatorDavid Pike7 Nov 2020, 09:58
Re: Edward J WillisDavid Pike7 Nov 2020, 11:16
Re: Edward J WillisDavid Pike8 Nov 2020, 17:27
Re: Another "Where are we?" puzzleDavid Pike12 Nov 2020, 16:08
Re: Another "Where are we?" puzzleDavid Pike13 Nov 2020, 16:38
Re: Meridian transit adaptationDavid Pike14 Nov 2020, 11:46
Re: Meridian transit adaptationDavid Pike15 Nov 2020, 16:43
Re: Curious star chartsDavid Pike17 Nov 2020, 09:47
Re: Curious star chartsDavid Pike17 Nov 2020, 16:10
Re: Curious star chartsDavid Pike17 Nov 2020, 18:17
Re: Curious star chartsDavid Pike18 Nov 2020, 00:18
Re: Curious star chartsDavid Pike18 Nov 2020, 09:08
Free Online Webinar - From the Periplus of Skylax to the Digital AgeDavid Pike18 Nov 2020, 21:25
Re: Curious star chartsDavid Pike22 Nov 2020, 20:14
Upcoming Royal Institute of Navigation Free WebinarsDavid Pike24 Nov 2020, 10:55
I'm forever blowing (sextant) bubblesDavid Pike24 Nov 2020, 17:34
Re: I'm forever blowing (sextant) bubblesDavid Pike25 Nov 2020, 14:05
South Pole CelestialDavid Pike25 Nov 2020, 16:45
Re: I'm forever blowing (sextant) bubblesDavid Pike25 Nov 2020, 18:37
Re: South Pole CelestialDavid Pike25 Nov 2020, 18:47
Re: South Pole CelestialDavid Pike25 Nov 2020, 19:04
Re: South Pole CelestialDavid Pike26 Nov 2020, 08:03
Re: 1st type Hand held Bagnold Sun CompassDavid Pike29 Nov 2020, 12:55
Re: 1st type Hand held Bagnold Sun CompassDavid Pike30 Nov 2020, 13:55
Re: Incomplete Instrument-- WWII German SoldsextantDavid Pike30 Nov 2020, 20:30
Re: 1st type Hand held Bagnold Sun CompassDavid Pike3 Dec 2020, 22:20
Re: British Air NavigationDavid Pike4 Dec 2020, 10:44
Re: Upcoming Royal Institute of Navigation Free WebinarsDavid Pike4 Dec 2020, 19:07
Re: C. 1900 mercury AHDavid Pike5 Dec 2020, 21:13
Re: C. 1900 mercury AHDavid Pike5 Dec 2020, 21:29
Re: C. 1900 mercury AHDavid Pike6 Dec 2020, 21:41
Sextant with Ivory Scale, Serial No 577 by G. A. Berry & Son, Hartlepool,David Pike7 Dec 2020, 09:41
Re: Poor BecruxDavid Pike7 Dec 2020, 12:15
Re: Sextant with Ivory Scale, Serial No 577 by G. A. Berry & Son, Hartlepool,David Pike9 Dec 2020, 13:01
Re: Davis sextant plasticDavid Pike12 Dec 2020, 20:33
More RIN Free WebinarsDavid Pike14 Dec 2020, 00:25
Smith's Mk2T (twilight) Periscopic SextantDavid Pike14 Dec 2020, 17:12
Re: 2021 Air Almanac pdfDavid Pike17 Dec 2020, 21:43
Re: Different (?) vernierDavid Pike18 Dec 2020, 18:16
Re: Different (?) vernierDavid Pike18 Dec 2020, 19:37
Re: Zenith distance and Ho question.David Pike20 Dec 2020, 17:43
Re: Different (?) vernierDavid Pike20 Dec 2020, 17:58
Re: MK2A periscope sextantDavid Pike23 Dec 2020, 11:16
Re: MK2A periscope sextantDavid Pike23 Dec 2020, 12:29
Re: More sunlight in Greenland than in the AmazonDavid Pike23 Dec 2020, 16:55
Re: MK2A periscope sextantDavid Pike23 Dec 2020, 20:55
Re: Sunderlands and marine sextantsDavid Pike23 Dec 2020, 21:08
Re: Sunderlands and marine sextantsDavid Pike24 Dec 2020, 09:39
Re: MK2A periscope sextantDavid Pike24 Dec 2020, 21:50
Re: More sunlight in Greenland than in the AmazonDavid Pike25 Dec 2020, 19:44
Re: MK2A periscope sextantDavid Pike25 Dec 2020, 21:45
Christmas week QuizzesDavid Pike26 Dec 2020, 10:35
Re: More sunlight in Greenland than in the AmazonDavid Pike26 Dec 2020, 15:23
Re: More sunlight in Greenland than in the AmazonDavid Pike26 Dec 2020, 19:03
Re: Christmas week QuizzesDavid Pike27 Dec 2020, 12:12
Re: Christmas week QuizzesDavid Pike27 Dec 2020, 17:43
Re: Christmas week QuizzesDavid Pike27 Dec 2020, 17:57
Re: Sunderlands and marine sextantsDavid Pike27 Dec 2020, 18:35
Re: Sunderlands and marine sextantsDavid Pike27 Dec 2020, 18:51
Re: Christmas week QuizzesDavid Pike28 Dec 2020, 11:39
Re: Christmas week QuizzesDavid Pike29 Dec 2020, 12:25
Re: Christmas week QuizzesDavid Pike29 Dec 2020, 12:42
Re: Christmas week QuizzesDavid Pike30 Dec 2020, 10:05
Re: Sides of the Navigational Triangle - Naming Conventions?David Pike31 Dec 2020, 10:23
Re: Christmas week QuizzesDavid Pike31 Dec 2020, 10:54
Meridian transit adaptationDavid Schmidt13 Nov 2020, 20:30
Re: NavList HamsDavid Smith3 May 2020, 07:38
Celestial Navigation in the British Royal NavyDavid Smith4 May 2020, 08:51
Re: Celestial Navigation in the British Royal NavyDavid Smith5 May 2020, 07:52
Spare parts for Mark IX sextantDean Tetley12 Jul 2020, 07:01
Star Tracker - Space Shuttle and the Inertial Upper Stage.Derrick Young4 Apr 2020, 18:53
Re: NavList HamsDerrick Young3 May 2020, 14:42
Re: Sextant handle electric system, out of serviceDiego Melas18 Jun 2020, 12:42
Re: Radio from the middle of nowhereDon Seltzer30 Apr 2020, 14:44
Re: Radio from the middle of nowhereDon Seltzer1 May 2020, 19:03
Re: Who needs a compass? Who needs a sextant?Don Seltzer19 Aug 2020, 19:35
Re: Digital SextantDon Seltzer11 Sep 2020, 13:37
Women navigators in the age of sailDon Seltzer23 Sep 2020, 23:44
Re: Women navigators in the age of sailDon Seltzer24 Sep 2020, 01:25
Re: Units in NavigationDon Seltzer26 Sep 2020, 21:44
Re: Solve this Moon photo!Don Seltzer27 Sep 2020, 20:59
Re: Solve this Moon photo!Don Seltzer29 Sep 2020, 02:22
Re: The Nautical Mile?Don Seltzer31 Oct 2020, 19:46
Re: Where are we NavigatorDon Seltzer7 Nov 2020, 00:51
Re: Where are we NavigatorDon Seltzer7 Nov 2020, 00:52
Re: Christmas week QuizzesDon Seltzer31 Dec 2020, 15:42
Is this a real site (celestial... .info)?Doug Faunt8 Feb 2020, 17:59
Re: Is this a real site (celestial... .info)?Doug Faunt8 Feb 2020, 22:12
Re: Google Maps and Street viewDoug Faunt4 Mar 2020, 16:56
Re: Another SpaceX launch: photo celestialDoug Faunt12 Mar 2020, 20:00
Re: Grand Princess and Plague flagDoug Faunt17 Mar 2020, 20:12
Re: Maskelyne: Astronomer RoyalDoug Faunt26 Mar 2020, 00:16
Re: Venus in daylightDoug Faunt29 Mar 2020, 16:50
Re: Venus in daylightDoug Faunt29 Mar 2020, 16:52
Star tracker article, interesting graphicsDoug Faunt3 Apr 2020, 17:14
Re: Venus in daylightDoug Faunt8 Apr 2020, 17:01
Re: Radio from the middle of nowhereDoug Faunt30 Apr 2020, 03:29
Re: Radio from the middle of nowhereDoug Faunt30 Apr 2020, 18:51
Re: Celestial Navigation licensing examsDoug Faunt1 May 2020, 17:19
Re: Radio from the middle of nowhereDoug Faunt1 May 2020, 17:40
Re: Radio from the middle of nowhereDoug Faunt1 May 2020, 19:35
Re: Celestial Navigation licensing examsDoug Faunt2 May 2020, 01:47
Re: Bermuda sailing races cancelledDoug Faunt2 May 2020, 19:28
Re: Bermuda sailing races cancelledDoug Faunt2 May 2020, 22:14
Re: NavList HamsDoug Faunt4 May 2020, 00:14
Re: Celestial Navigation licensing examsDoug Faunt5 May 2020, 22:37
Re: Celestial Navigation licensing examsDoug Faunt6 May 2020, 22:46
Re: A Lancaster Navigator's Logs and Charts AnalysedDoug Faunt13 May 2020, 22:13
Re: Janet Taylor octantDoug Faunt24 May 2020, 01:58
Re: Comedy on the Greenwich MeridianDoug Faunt16 Jun 2020, 04:33
Re: Comedy on the Greenwich MeridianDoug Faunt16 Jun 2020, 04:51
Re: Sun's GenderDoug Faunt21 Jun 2020, 17:52
Re: Corporal Sadler SAS: Desert NavigationDoug Faunt24 Jun 2020, 17:04
Fun stuff referring to the Prime MeridianDoug Faunt24 Jun 2020, 21:21
Re: Timex Iron Man Watch=kaputDoug Faunt3 Jul 2020, 19:57
Re: Online Meetings SundayDoug Faunt6 Jul 2020, 02:44
Re: NavList HamsDoug Faunt12 Jul 2020, 23:54
Re: Navigator's Slide RuleDoug Faunt13 Jul 2020, 02:59
Re: NavList HamsDoug Faunt14 Jul 2020, 20:51
Re: Venus in daylight this monthDoug Faunt15 Jul 2020, 18:34
Re: Navigator's Slide RuleDoug Faunt19 Aug 2020, 19:03
Re: Kollsman periscopic sextant mountDoug Faunt21 Sep 2020, 15:53
Re: Kollsman periscopic sextant mountDoug Faunt21 Sep 2020, 20:29
Re: Kollsman periscopic sextant mountDoug Faunt22 Sep 2020, 01:09
Re: Kollsman periscopic sextant mountDoug Faunt22 Sep 2020, 17:13
Re: Kollsman periscopic sextant mountDoug Faunt22 Sep 2020, 18:56
A good reason to know celestial navigationDoug Faunt22 Sep 2020, 19:09
Re: Kollsman periscopic sextant mountDoug Faunt23 Sep 2020, 15:56
Re: Units in NavigationDoug Faunt25 Sep 2020, 00:35
Re: Slide ruleDoug Faunt17 Oct 2020, 18:53
Re: Navigation stars and a SpaceX MockshipDoug Faunt22 Oct 2020, 02:33
Re: Curious sextant add-onDoug Faunt22 Oct 2020, 17:23
Article about Frank's Nautical Almanac clone app in Ocean Navigator.Doug Faunt23 Oct 2020, 02:33
Re: Small craft RDF in 1967Doug Faunt1 Dec 2020, 18:25
Re: New Scientist: GPS mystery is making ships appear to teleport and move in circlesDoug Faunt13 Dec 2020, 01:29
Re: Designed for the use of British SeamanDoug MacPherson18 Jan 2020, 23:51
Learning time sights and lunars online.Doug MacPherson17 May 2020, 21:55
Re: Sun's Gender (United Kingdom 1835)Doug MacPherson23 Jun 2020, 03:39
Re: Moon Venus Camera LunarDoug MacPherson19 Jul 2020, 00:19
Re: Online Webex Meetings Tomorrow, Sep 20Doug MacPherson20 Sep 2020, 21:10
Re: Experience with an artifical horizonDoug MacPherson14 Oct 2020, 14:47
Celestaire Astra IIIB backlashDouglas Stephen14 Jun 2020, 17:30
Re: Celestaire Astra IIIB backlashDouglas Stephen15 Jun 2020, 13:01
Re: Celestaire Astra IIIB backlashDouglas Stephen16 Jun 2020, 19:24
Re: Radio from the middle of nowhereDrago Simac29 Apr 2020, 21:45
Re: NO Online Meetings TomorrowDrago Simac7 Sep 2020, 22:12
Finding Longitude from LSTDuane Smith16 Aug 2020, 21:46
Re: Finding Longitude from LSTDuane Smith17 Aug 2020, 05:15
Maskelyne and lunar distanceDucruy Jacques30 Jul 2020, 15:58
Re: Navigating in Microsoft Flight SimulatorDustin Baenen6 Jan 2020, 19:18
Re: No DR position. How can you get an accurate celestial fix?Dustin Baenen20 Jan 2020, 17:42
Re: ChronographDustin Baenen4 Mar 2020, 15:55
Re: ChronographDustin Baenen4 Mar 2020, 21:21
Re: A12 vs A8-A sextantsDustin Baenen23 Mar 2020, 13:42
Re: Referring to Eds Daves & Davids for exampleDustin Baenen13 Apr 2020, 21:35
Re: Venus in daylight this monthDustin Baenen15 Jul 2020, 21:44
Re: Celestial Navigation Exercises and Plotting SheetsDustin Baenen31 Jul 2020, 20:07
Re: Navigating in Microsoft Flight SimulatorDustin Baenen18 Aug 2020, 15:06
Re: Curious sextant add-onDustin Baenen22 Oct 2020, 19:20
Re: Curious sextant add-onDustin Baenen22 Oct 2020, 21:24
Re: Smart Phone CNEd Hlywa5 Mar 2020, 17:56
Re: NavList HamsEd Hlywa3 May 2020, 16:22
Weems and Plath Celestial Slide RuleEd J.8 Apr 2020, 17:52
Re: Weems and Plath Celestial Slide RuleEd J.11 Apr 2020, 19:55
Re: Stellarium, refraction, HPEd Popko10 Jan 2020, 11:23
Re: Stellarium, refraction, HPEd Popko11 Jan 2020, 12:39
Reed's Lunars Calculator AnniversaryEd Popko11 Jan 2020, 12:46
Re: Stellarium, refraction, HPEd Popko12 Jan 2020, 00:09
Re: Reed's Lunars Calculator AnniversaryEd Popko12 Jan 2020, 00:15
Re: Stellarium, refraction, HPEd Popko15 Jan 2020, 13:10
Re: Stellarium, refraction, HPEd Popko15 Jan 2020, 23:47
Re: Bausch and Lomb WWII Aircraft SextantsEd Popko20 Jan 2020, 17:01
Re: Cosine formula to solve a right spherical triangle?Ed Popko26 Jan 2020, 12:36
Re: Celestial navigation: easier basic principle?Ed Popko27 Jan 2020, 10:56
Re: Sky & Telescope Magazine article on Capt. Cook's AstronomyEd Popko29 Jan 2020, 21:26
Re: Moon Venus Lunar - Interpretation of resultsEd Popko31 Jan 2020, 12:36
A-12 ExperiencesEd Popko9 Feb 2020, 11:44
Re: A-12 ExperiencesEd Popko10 Feb 2020, 00:57
Re: A-12 ExperiencesEd Popko10 Feb 2020, 01:06
Re: A-12 ExperiencesEd Popko11 Feb 2020, 13:36
Re: A-12 ExperiencesEd Popko12 Feb 2020, 11:12
Re: Sun Slow DayEd Popko12 Feb 2020, 11:23
Re: What does the Analemma depict?Ed Popko13 Feb 2020, 13:35
Using the sun's direct and reflected image to determine a sextant's IEEd Popko9 Mar 2020, 12:59
Re: Using the sun's direct and reflected image to determine a sextant's IEEd Popko9 Mar 2020, 20:23
Re: Using the sun's direct and reflected image to determine a sextant's IEEd Popko10 Mar 2020, 11:46
Re: Kelvin Hughes sounding sextant !Ed Popko17 Mar 2020, 16:51
GPS Anti Spoof ProEd Popko24 Mar 2020, 10:59
Re: Weems and Plath Celestial Slide RuleEd Popko10 Apr 2020, 14:51
Re: Radio from the middle of nowhereEd Popko29 Apr 2020, 12:10
NavList HamsEd Popko2 May 2020, 11:20
Re: Hav-Doniol re-visitedEd Popko6 May 2020, 13:46
BBC - Scientists explain magnetic pole's wanderingsEd Popko11 May 2020, 17:09
Re: Plot Sheet GeneratorEd Popko17 Jul 2020, 10:45
Re: NavList HamsEd Popko17 Jul 2020, 11:00
Re: USNO web app clonedEd Popko18 Sep 2020, 11:42
Re: Experience with an artifical horizonEd Popko18 Oct 2020, 13:38
Re: 24MP DSLR 35mm LunarsEd Popko18 Oct 2020, 13:41
Heavenly Mathematics - The Forgotten Art of Spherical TrigonometryEd Popko24 Oct 2020, 15:35
Curious star chartsEd Popko16 Nov 2020, 15:13
Re: Curious star chartsEd Popko17 Nov 2020, 22:27
Re: Curious star chartsEd Popko21 Nov 2020, 14:02
Re: I'm forever blowing (sextant) bubblesEd Popko25 Nov 2020, 17:40
Re: Moon corrections: how computation order affects the resultEric Fernandez1 Sep 2020, 13:36
Re: Moon corrections: how computation order affects the resultEric Fernandez2 Sep 2020, 09:43
Re: Moon corrections: how computation order affects the resultEric Fernandez3 Sep 2020, 19:34
Re: Moon corrections: how computation order affects the resultEric Fernandez4 Sep 2020, 07:45
SD topocentric formulaEric Fernandez11 Sep 2020, 06:34
Re: SD topocentric formulaEric Fernandez12 Sep 2020, 12:40
Re: SD topocentric formulaEric Fernandez12 Sep 2020, 12:50
Re: USNO web app clonedEric Fernandez15 Sep 2020, 15:34
Re: USNO web app clonedEric Fernandez16 Sep 2020, 08:14
Re: Kollsman periscopic sextant mountEric Fernandez21 Sep 2020, 09:58
Troughton sextantEric van der Veen6 Sep 2020, 11:34
Moon corrections: how computation order affects the resultFernandez E31 Aug 2020, 08:43
Re: Dating Hughes and Son sextantsFrancis Upchurch4 Jan 2020, 06:45
Re: Modern Bygrave Slide Rule EmulatorFrancis Upchurch7 Mar 2020, 07:52
Re: Modern Bygrave Slide Rule EmulatorFrancis Upchurch7 Mar 2020, 21:51
Re: Modern Bygrave Slide Rule EmulatorFrancis Upchurch19 Mar 2020, 10:52
Re: Longitude by Time Sight Using a Slide RuleFrancis Upchurch23 Mar 2020, 06:39
Re: Maskelyne: Astronomer RoyalFrancis Upchurch23 Mar 2020, 17:28
Re: Traditional Bygrave, Modern Bygrave and Linear slide rule emulators.Francis Upchurch3 Apr 2020, 17:07
Re: Comedy on the Greenwich MeridianFrancis Upchurch16 Jun 2020, 04:09
Corporal Sadler SAS: Desert NavigationFrancis Upchurch24 Jun 2020, 16:17
Re: M.F. Maury and the progress of historyFrancis Upchurch14 Jul 2020, 20:28
Re: Toy ship begins journeyFrancis Upchurch24 Sep 2020, 20:09
Phosphine biomarker gas in Venus atmosphere.Francis Upchurch8 Oct 2020, 02:48
Re: Small craft RDF in 1967Francis Upchurch1 Dec 2020, 13:29
Kelvin Hughes sounding sextant !Frank Atkins9 Mar 2020, 09:25
Re: Kelvin Hughes sounding sextant !Frank Atkins12 Mar 2020, 12:09
Re: Kelvin Hughes sounding sextant !Frank Atkins13 Mar 2020, 23:28
Re: Kelvin Hughes sounding sextant !Frank Atkins17 Mar 2020, 22:30
Re: Latitude by two stars observed simultaneouslyFrank DeWald17 Jul 2020, 17:25
Re: C Plath sextant, missing partFrank DeWald17 Jul 2020, 18:04
USNOFrank Maxwell20 Feb 2020, 02:32
Re: UsnoFrank Maxwell20 Feb 2020, 22:39
Re: Longitude by Lunar OccultationFrank Reed4 Jan 2020, 18:09
Re: Position bias from UTCFrank Reed4 Jan 2020, 18:37
Re: A strange addition to a sextantFrank Reed4 Jan 2020, 21:22
Re: Dating Hughes and Son sextantsFrank Reed4 Jan 2020, 21:28
Navigating in Microsoft Flight SimulatorFrank Reed6 Jan 2020, 00:59
Re: Navigating in Microsoft Flight SimulatorFrank Reed7 Jan 2020, 02:25
Re: Moon’s SDFrank Reed7 Jan 2020, 17:09
Re: Navigating in Microsoft Flight SimulatorFrank Reed7 Jan 2020, 23:59
Re: Beidou Network OperationalFrank Reed8 Jan 2020, 00:21
Re: Variation or Declination?Frank Reed8 Jan 2020, 03:30
Re: Variation or Declination?Frank Reed8 Jan 2020, 17:22
Re: Moon’s SDFrank Reed8 Jan 2020, 19:19
SpaceX Starlink launch: photo celestialFrank Reed8 Jan 2020, 20:10
Re: SpaceX Starlink launch: photo celestialFrank Reed9 Jan 2020, 19:56
Re: SpaceX Starlink launch: photo celestialFrank Reed9 Jan 2020, 20:12
Re: Stellarium, refraction, HPFrank Reed10 Jan 2020, 01:32
Jupiter-Saturn Conjunction: 21 Dec 2020Frank Reed10 Jan 2020, 02:57
Re: SpaceX Starlink launch: photo celestialFrank Reed11 Jan 2020, 01:22
Re: Reed's Lunars Calculator AnniversaryFrank Reed12 Jan 2020, 00:50
Re: SpaceX Starlink launch: photo celestialFrank Reed12 Jan 2020, 02:57
Re: Stellarium, refraction, HPFrank Reed12 Jan 2020, 23:13
Re: Curve fitting for noon SunFrank Reed13 Jan 2020, 00:02
Re: Curve fitting for noon SunFrank Reed13 Jan 2020, 00:20
Re: Curve fitting for noon SunFrank Reed13 Jan 2020, 01:00
Survival at Sea, Stove by an OrcaFrank Reed13 Jan 2020, 03:33
Re: Stellarium, refraction, HPFrank Reed13 Jan 2020, 04:23
Re: Survival at Sea, Stove by an OrcaFrank Reed13 Jan 2020, 19:27
Re: SpaceX Starlink launch: photo celestialFrank Reed14 Jan 2020, 01:25
Re: Stellarium, refraction, HPFrank Reed14 Jan 2020, 01:43
Re: Stellarium, refraction, HPFrank Reed14 Jan 2020, 03:42
Re: Curve fitting for noon SunFrank Reed14 Jan 2020, 19:37
Re: SpaceX Starlink launch: photo celestialFrank Reed14 Jan 2020, 20:01
Re: Curve fitting for noon SunFrank Reed14 Jan 2020, 23:42
Re: Stellarium, refraction, HPFrank Reed14 Jan 2020, 23:57
Re: SpaceX Starlink launch: photo celestialFrank Reed15 Jan 2020, 01:08
Re: Stellarium, refraction, HP ---- YES!Frank Reed15 Jan 2020, 01:22
Starlink satellites over New England tonightFrank Reed16 Jan 2020, 18:43
Re: Compass direction from MoonFrank Reed16 Jan 2020, 19:05
Re: Compass direction from MoonFrank Reed17 Jan 2020, 03:20
Some pop culture sextantsFrank Reed17 Jan 2020, 04:09
Re: Hardly ever get an LOP than 20 NM - why?Frank Reed17 Jan 2020, 16:49
Re: Some pop culture sextantsFrank Reed17 Jan 2020, 19:34
Re: Cold War Sun HoursFrank Reed17 Jan 2020, 19:44
Re: Hardly ever get an LOP than 20 NM - why?Frank Reed19 Jan 2020, 03:08
Re: Why Can't My GNSS Receiver See Galileo?Frank Reed19 Jan 2020, 18:04
Re: No DR position. How can you get an accurate celestial fix?Frank Reed19 Jan 2020, 18:13
Re: No DR position. How can you get an accurate celestial fix?Frank Reed19 Jan 2020, 19:27
Re: No DR position. How can you get an accurate celestial fix?Frank Reed19 Jan 2020, 20:01
Re: Why Can't My GNSS Receiver See Galileo?Frank Reed20 Jan 2020, 03:15
Re: Why Can't My GNSS Receiver See Galileo?Frank Reed20 Jan 2020, 04:08
Re: No DR position. How can you get an accurate celestial fix?Frank Reed23 Jan 2020, 02:56
Re: Cosine formula to solve a right spherical triangle?Frank Reed23 Jan 2020, 03:36
Re: No DR position. How can you get an accurate celestial fix?Frank Reed25 Jan 2020, 19:12
Re: Sky & Telescope Magazine article on Capt. Cook's AstronomyFrank Reed26 Jan 2020, 20:56
Re: Earliest Crescent Moon VisibilityFrank Reed27 Jan 2020, 17:04
Re: Sky & Telescope Magazine article on Capt. Cook's AstronomyFrank Reed27 Jan 2020, 18:14
Re: GPS Anti Spoof based on radio sextant ?Frank Reed28 Jan 2020, 19:06
Re: Captain Cook & celestial navigationFrank Reed29 Jan 2020, 17:01
Satellite collision over northeast USFrank Reed29 Jan 2020, 19:29
Re: Moon Venus Lunar - Interpretation of resultsFrank Reed31 Jan 2020, 01:36
Re: Anti-spoof testing my sextantFrank Reed31 Jan 2020, 01:57
Re: Anti-spoof testing my sextantFrank Reed31 Jan 2020, 02:07
Re: Scale of InterceptFrank Reed1 Feb 2020, 17:20
Re: Scale of InterceptFrank Reed2 Feb 2020, 01:13
Re: Moon Venus Lunar - Interpretation of resultsFrank Reed2 Feb 2020, 02:08
Re: A postage stamp on a football?? – try a cricket ball.Frank Reed3 Feb 2020, 02:14
Re: Captain Cook & celestial navigationFrank Reed3 Feb 2020, 02:53
Re: History & development of HO-249Frank Reed3 Feb 2020, 03:56
Re: Moon Venus Lunar - Interpretation of resultsFrank Reed3 Feb 2020, 17:58
Re: Latitude by two stars observed simultaneouslyFrank Reed6 Feb 2020, 18:25
Re: Moon Venus Lunar - Interpretation of resultsFrank Reed8 Feb 2020, 04:05
Re: Weems Star Altitude CurvesFrank Reed8 Feb 2020, 18:47
Re: Is this a real site (celestial... .info)?Frank Reed8 Feb 2020, 19:06
Celestial Navigation classes in the UK in JuneFrank Reed8 Feb 2020, 19:30
Re: Classical Lunars diagram: who invented it ?Frank Reed9 Feb 2020, 17:46
Re: Is this a real site (celestial... .info)?Frank Reed10 Feb 2020, 00:25
Sun Slow DayFrank Reed11 Feb 2020, 18:29
Re: Celestial Navigation classes in the UK in JuneFrank Reed13 Feb 2020, 20:05
Re: Lunar distance parallactic retardationFrank Reed17 Feb 2020, 19:32
Re: Two Bodies + Angle Between Them = Third LoPFrank Reed17 Feb 2020, 19:57
Re: Katherine JohnsonFrank Reed27 Feb 2020, 20:17
Today's sub-Sun pointFrank Reed1 Mar 2020, 17:57
Re: [OT] Browser trickFrank Reed1 Mar 2020, 21:22
Archive of HMS Bounty fatefulvoyage.comFrank Reed3 Mar 2020, 20:10
Re: Air Almanac 2020 full pdf now available...Frank Reed4 Mar 2020, 01:42
Re: Today's sub-Sun pointFrank Reed4 Mar 2020, 02:34
Re: Longitudes greater than 180Frank Reed4 Mar 2020, 03:24
Another SpaceX launch: photo celestialFrank Reed8 Mar 2020, 01:03
Re: Another SpaceX launch: photo celestialFrank Reed8 Mar 2020, 22:36
Re: GPS Anti Spoof: time to update...Frank Reed12 Mar 2020, 17:29
Re: Another SpaceX launch: photo celestialFrank Reed12 Mar 2020, 19:41
Royal Museums Greenwich closedFrank Reed17 Mar 2020, 19:55
GMT by Lunar Distance in GuatemalaFrank Reed17 Mar 2020, 19:59
Re: GPS Anti Spoof: time to update...Frank Reed17 Mar 2020, 21:53
Navigate to this islandFrank Reed19 Mar 2020, 19:20
Tabulate Lunar Distances by GHAFrank Reed21 Mar 2020, 19:13
Re: Maskelyne: Astronomer RoyalFrank Reed23 Mar 2020, 21:42
Happy Birthday, John HarrisonFrank Reed25 Mar 2020, 03:24
Re: GPS Anti Spoof ProFrank Reed25 Mar 2020, 03:36
Re: Maskelyne: Astronomer RoyalFrank Reed25 Mar 2020, 04:20
Re: GPS Anti Spoof ProFrank Reed27 Mar 2020, 00:10
Venus in daylightFrank Reed27 Mar 2020, 22:19
Re: Venus in daylightFrank Reed28 Mar 2020, 01:53
Re: Venus in daylightFrank Reed28 Mar 2020, 03:27
Re: Venus in daylightFrank Reed28 Mar 2020, 19:54
Celestial in the Age of Sail, April 7-9, onlineFrank Reed31 Mar 2020, 18:17
Re: Venus in daylightFrank Reed31 Mar 2020, 20:47
Re: Venus in daylightFrank Reed31 Mar 2020, 21:54
Re: Lunars: optimal angular distancesFrank Reed31 Mar 2020, 22:19
Re: Sun-Venus distance observationFrank Reed31 Mar 2020, 22:29
Re: Venus in daylightFrank Reed1 Apr 2020, 05:23
Re: Celestial in the Age of Sail, April 7-9, onlineFrank Reed1 Apr 2020, 21:21
Re: Venus in daylightFrank Reed4 Apr 2020, 22:38
Re: Venus in daylightFrank Reed5 Apr 2020, 22:26
Re: Dutch Nautical Atlas/Almanac 1584Frank Reed5 Apr 2020, 22:41
Re: Celestial in the Age of Sail, April 13-15, onlineFrank Reed6 Apr 2020, 20:24
Re: Venus in daylightFrank Reed7 Apr 2020, 04:19
NavList-donated Amelia Earhart signFrank Reed7 Apr 2020, 05:54
Re: Celestial in the Age of Sail, April 13-15, onlineFrank Reed8 Apr 2020, 03:55
NavList social sessions LIVE todayFrank Reed8 Apr 2020, 06:34
Re: Venus in daylightFrank Reed8 Apr 2020, 16:14
Re: NavList social sessions LIVE todayFrank Reed8 Apr 2020, 22:21
Re: Venus in daylightFrank Reed9 Apr 2020, 04:23
Re: Anti-spoof appFrank Reed18 Apr 2020, 17:49
Re: NavList social sessions LIVE todayFrank Reed18 Apr 2020, 18:13
Re: HO 200 AquinoFrank Reed19 Apr 2020, 06:35
Online Workshop: Modern Celestial Navigation, May 4-6Frank Reed19 Apr 2020, 18:16
Online Workshop: Lunars, May 14-16Frank Reed19 Apr 2020, 18:22
Re: False horizon under the Moon, under the Sun too?Frank Reed20 Apr 2020, 17:15
Re: False horizon under the Moon, under the Sun too?Frank Reed20 Apr 2020, 22:50
Re: April 28: Venus maximum brillianceFrank Reed21 Apr 2020, 21:59
Buffy, the Moon is wrong...Frank Reed24 Apr 2020, 19:50
Re: April 28: Venus maximum brillianceFrank Reed26 Apr 2020, 06:01
Re: Hyatt's Celestial CoordinatorFrank Reed26 Apr 2020, 20:54
Radio from the middle of nowhereFrank Reed26 Apr 2020, 23:07
Meteorite over Iraqi Kurdistan in 1888Frank Reed27 Apr 2020, 16:00
Re: Calibrating a Bris with a Davis mk15 sextantFrank Reed27 Apr 2020, 17:47
Re: Radio from the middle of nowhereFrank Reed29 Apr 2020, 17:47
Re: Calculators "old technology"Frank Reed30 Apr 2020, 18:21
Re: Calculators "old technology"Frank Reed30 Apr 2020, 20:55
Re: Calculators "old technology"Frank Reed1 May 2020, 02:45
Re: Radio from the middle of nowhereFrank Reed1 May 2020, 16:24
Celestial Navigation licensing examsFrank Reed1 May 2020, 16:27
Re: Calculators "old technology"Frank Reed2 May 2020, 03:00
Re: NavlistFrank Reed2 May 2020, 17:23
Re: NavList HamsFrank Reed2 May 2020, 17:27
Re: Online Workshop: Modern Celestial Navigation, May 4-6Frank Reed2 May 2020, 17:31
Bermuda sailing races cancelledFrank Reed2 May 2020, 17:53
Re: Bermuda sailing races cancelledFrank Reed2 May 2020, 21:21
Re: Position from altitude and azimuth.Frank Reed10 May 2020, 18:33
Lunars and Traditional CN online workshopsFrank Reed10 May 2020, 18:39
Re: Non-graphical way to solve a wind triangleFrank Reed12 May 2020, 03:39
Re: A Lancaster Navigator's Logs and Charts AnalysedFrank Reed12 May 2020, 23:29
Re: Position from altitude and azimuth.Frank Reed18 May 2020, 21:11
Re: Position from altitude and azimuth.Frank Reed19 May 2020, 06:58
Re: Position from altitude and azimuth.Frank Reed19 May 2020, 15:04
Upcoming Online Celestial Navigation WorkshopsFrank Reed19 May 2020, 23:46
Re: Position from altitude and azimuth.Frank Reed20 May 2020, 18:54
ADMIN: The 21st Century Awaits...Frank Reed24 May 2020, 00:15
Re: Janet Taylor octantFrank Reed24 May 2020, 04:43
Re: Parallax in azimuthFrank Reed25 May 2020, 03:17
Re: E.O.T. for 2020Frank Reed30 May 2020, 19:14
Re: E.O.T. for 2020Frank Reed3 Jun 2020, 04:30
Re: Navigation system failureFrank Reed3 Jun 2020, 20:49
Re: USNO Nav. Star Chart how Old?Frank Reed3 Jun 2020, 21:17
Re: Celestial in the thin air!Frank Reed5 Jun 2020, 20:27
Re: Celestial in the thin air!Frank Reed9 Jun 2020, 19:10
Wild legends of Nathaniel BowditchFrank Reed9 Jun 2020, 20:22
Navwords crossword (1975)Frank Reed9 Jun 2020, 20:26
Re: Ex-Meridian Sight using InmansFrank Reed10 Jun 2020, 19:54
Comedy on the Greenwich MeridianFrank Reed16 Jun 2020, 02:41
Online Celestial Navigation WorkshopsFrank Reed20 Jun 2020, 20:51
Re: Sun's GenderFrank Reed22 Jun 2020, 02:19
Bermuda Race: Exciting finish this yearFrank Reed24 Jun 2020, 00:47
Ares at AriesFrank Reed25 Jun 2020, 22:26
Re: Sextant Collimation ErrorFrank Reed26 Jun 2020, 06:21
Re: Sextant Collimation ErrorFrank Reed28 Jun 2020, 04:52
Re: A ramble on "new improved methods"Frank Reed30 Jun 2020, 21:35
Venus in daylight this monthFrank Reed2 Jul 2020, 22:50
Online Meetings SundayFrank Reed3 Jul 2020, 03:12
Lunar Eclipse non-eventFrank Reed4 Jul 2020, 22:27
Re: Online Meetings SundayFrank Reed4 Jul 2020, 23:41
Re: Online Meetings SundayFrank Reed5 Jul 2020, 04:50
Re: Online Meetings SundayFrank Reed5 Jul 2020, 20:25
Re: Online Meetings SundayFrank Reed6 Jul 2020, 01:49
Re: Longitude by unequal altitudes - BrentFrank Reed7 Jul 2020, 04:30
Sun over Abu SimbelFrank Reed9 Jul 2020, 14:59
Re: Online Meetings SundayFrank Reed11 Jul 2020, 17:00
Re: Trouble solving for spherical triangleFrank Reed12 Jul 2020, 03:43
Comet NeowiseFrank Reed12 Jul 2020, 20:37
Re: Navigator's Slide RuleFrank Reed14 Jul 2020, 03:38
M.F. Maury and the progress of historyFrank Reed14 Jul 2020, 06:33
Re: Venus in daylight this monthFrank Reed14 Jul 2020, 16:30
Re: Venus in daylight this monthFrank Reed15 Jul 2020, 07:32
Re: Astron relocatedFrank Reed16 Jul 2020, 21:48
Re: Backstaff washed up on the beachFrank Reed18 Jul 2020, 05:28
Sextant practice on the space stationFrank Reed19 Jul 2020, 00:40
Re: Sextant practice on the space stationFrank Reed19 Jul 2020, 06:13
Re: Dip Short DSLR Camera CN SunFrank Reed19 Jul 2020, 21:23
Online "Office Hours" in one hourFrank Reed19 Jul 2020, 22:02
Re: Dip Short DSLR Camera CN SunFrank Reed21 Jul 2020, 03:03
Online WorkshopsFrank Reed21 Jul 2020, 21:34
Essay: Navigating by the Heavens...Frank Reed21 Jul 2020, 21:35
Re: Essay: Navigating by the Heavens...Frank Reed22 Jul 2020, 17:37
"Office Hours" in two hoursFrank Reed26 Jul 2020, 20:51
Venus in daylight this weekFrank Reed27 Jul 2020, 04:18
Re: The History of Celestial Navigation (2020)Frank Reed30 Jul 2020, 06:47
Re: The History of Celestial Navigation (2020)Frank Reed30 Jul 2020, 06:59
Expensive toysFrank Reed1 Aug 2020, 23:03
NavList/ReedNavigation.com "Office Hours" tomorrowFrank Reed2 Aug 2020, 03:32
SpaceX views from an old British aircraftFrank Reed2 Aug 2020, 19:12
Re: Expensive toysFrank Reed4 Aug 2020, 18:20
Nautical Almanac 1786Frank Reed4 Aug 2020, 19:52
Latitude by photoFrank Reed7 Aug 2020, 06:18
Re: Latitude by photoFrank Reed7 Aug 2020, 20:16
Re: AH Level?Frank Reed7 Aug 2020, 23:04
Re: Latitude by photoFrank Reed8 Aug 2020, 00:30
Re: Latitude by photoFrank Reed8 Aug 2020, 18:21
Re: NavList/ReedNavigation.com "Office Hours" tomorrowFrank Reed8 Aug 2020, 23:27
Re: Latitude by photoFrank Reed9 Aug 2020, 02:23
Re: Navigation TablesFrank Reed9 Aug 2020, 21:06
Re: Moon Rise - I'm Missing SomethingFrank Reed10 Aug 2020, 18:54
Re: Online Video "Office Hours" tomorrowFrank Reed16 Aug 2020, 01:37
Sextant certificate with a graphFrank Reed16 Aug 2020, 15:55
Re: Sextant certificate with a graphFrank Reed16 Aug 2020, 19:10
Re: Finding Longitude from LSTFrank Reed16 Aug 2020, 22:13
Average altitude of a celestial sightFrank Reed17 Aug 2020, 07:04
Re: Navigating in Microsoft Flight SimulatorFrank Reed17 Aug 2020, 21:23
Re: Average altitude of a celestial sightFrank Reed17 Aug 2020, 22:30
Online Video "Office Hours" tomorrowFrank Reed23 Aug 2020, 02:28
Re: What time is it?Frank Reed23 Aug 2020, 05:45
Re: What time is it?Frank Reed23 Aug 2020, 06:09
Re: Latitude 48 Article Image as CN Piloting ExerciseFrank Reed23 Aug 2020, 16:45
Re: What time is it?Frank Reed23 Aug 2020, 22:24
Re: Navigation with Moon imagesFrank Reed24 Aug 2020, 14:50
Re: Latitude 48 Article Image as CN Piloting ExerciseFrank Reed25 Aug 2020, 02:13
Re: Hughes & Son's Sextant - General InfoFrank Reed28 Aug 2020, 17:51
Online Meetings TomorrowFrank Reed30 Aug 2020, 04:54
ADMIN: last night's internet outageFrank Reed1 Sep 2020, 01:07
Re: Moon corrections: how computation order affects the resultFrank Reed1 Sep 2020, 16:54
Re: Moon corrections: how computation order affects the resultFrank Reed1 Sep 2020, 20:46
Re: Hezzanith SextantFrank Reed4 Sep 2020, 23:57
Re: Hezzanith SextantFrank Reed6 Sep 2020, 03:47
NO Online Meetings TomorrowFrank Reed6 Sep 2020, 03:49
Re: 9th Century Lunar problem...Frank Reed7 Sep 2020, 19:01
Re: Hezzanith SextantFrank Reed7 Sep 2020, 23:11
Re: Yoder SextantFrank Reed8 Sep 2020, 22:28
Re: Hezzanith SextantFrank Reed8 Sep 2020, 23:39
Re: Longitude at noonFrank Reed9 Sep 2020, 00:00
Re: Martin Creamer dies at 104Frank Reed9 Sep 2020, 21:03
Re: Problem with Frank Reed updated online almanacFrank Reed10 Sep 2020, 17:26
Re: Digital SextantFrank Reed10 Sep 2020, 17:51
Re: Problem with Frank Reed updated online almanacFrank Reed11 Sep 2020, 05:13
Re: Problem with Frank Reed updated online almanacFrank Reed11 Sep 2020, 19:42
Re: SD topocentric formulaFrank Reed11 Sep 2020, 20:13
Online Meetings Tomorrow, Sept 13Frank Reed13 Sep 2020, 00:49
Re: Latitude by PolarisFrank Reed13 Sep 2020, 06:16
Re: Beta testers wantedFrank Reed13 Sep 2020, 19:55
USNO web app clonedFrank Reed15 Sep 2020, 10:11
Re: USNO web app clonedFrank Reed15 Sep 2020, 19:22
Re: Single LOP is enough?Frank Reed15 Sep 2020, 19:41
Re: Latitude by PolarisFrank Reed15 Sep 2020, 21:55
Re: USNO web app clonedFrank Reed16 Sep 2020, 01:38
Re: USNO web app clonedFrank Reed16 Sep 2020, 01:56
Re: Single LOP is enough?Frank Reed17 Sep 2020, 19:46
Re: Towson's tables?Frank Reed17 Sep 2020, 23:33
Re: Towson's tables?Frank Reed19 Sep 2020, 03:44
Online Webex Meetings Tomorrow, Sep 20Frank Reed20 Sep 2020, 01:04
Voyages of the Astrolabe, 1826-29 and 1837-40Frank Reed20 Sep 2020, 06:01
Re: Online Webex Meetings Tomorrow, Sep 20Frank Reed20 Sep 2020, 19:25
Re: Kollsman periscopic sextant mountFrank Reed22 Sep 2020, 18:31
Equinox at 13:30 UT... the Sun is heading south!Frank Reed22 Sep 2020, 19:16
Re: Polaris' PM in RA?Frank Reed23 Sep 2020, 17:04
ReedNavigation.com Online Workshops: October 2020Frank Reed23 Sep 2020, 18:21
Re: Equinox at 13:30 UT... the Sun is heading south!Frank Reed23 Sep 2020, 21:03
Re: Women navigators in the age of sailFrank Reed24 Sep 2020, 00:46
Star globe details and a Russian/Soviet bookFrank Reed24 Sep 2020, 04:37
Re: Polaris' PM in RA?Frank Reed24 Sep 2020, 16:47
ADMIN: NavList Operations ContributionsFrank Reed24 Sep 2020, 23:53
Re: Units in NavigationFrank Reed26 Sep 2020, 04:05
Re: Units in NavigationFrank Reed26 Sep 2020, 18:02
Re: Units in NavigationFrank Reed26 Sep 2020, 19:17
Re: Units in NavigationFrank Reed26 Sep 2020, 19:43
Re: Star globe details and a Russian/Soviet bookFrank Reed26 Sep 2020, 22:36
NO online "Office Hours" tomorrow...Frank Reed27 Sep 2020, 00:28
Re: Units in NavigationFrank Reed27 Sep 2020, 03:58
Solve this Moon photo!Frank Reed27 Sep 2020, 06:14
Re: Solve this Moon photo!Frank Reed27 Sep 2020, 21:26
Re: Solve this Moon photo!Frank Reed28 Sep 2020, 19:18
Re: Moon meridian passageFrank Reed29 Sep 2020, 01:01
Re: Solve this Moon photo!Frank Reed29 Sep 2020, 05:55
Re: GHA of the MoonFrank Reed1 Oct 2020, 22:34
Re: GHA of the MoonFrank Reed3 Oct 2020, 05:12
Re: GHA of the MoonFrank Reed3 Oct 2020, 18:39
Modern Celestial Navigation workshops postponed until mid-NovemberFrank Reed3 Oct 2020, 20:28
Online Meeting Tomorrow, Oct 4, "Distance by Vertical Angle"Frank Reed3 Oct 2020, 20:46
Re: GHA of the MoonFrank Reed3 Oct 2020, 22:59
Re: GHA of the MoonFrank Reed3 Oct 2020, 23:09
Re: GHA of the MoonFrank Reed5 Oct 2020, 21:11
Distance by Vertical AngleFrank Reed6 Oct 2020, 18:09
Re: Distance by Vertical AngleFrank Reed7 Oct 2020, 18:16
Re: Distance by Vertical AngleFrank Reed8 Oct 2020, 00:42
Re: Time sight primerFrank Reed11 Oct 2020, 01:00
Re: Haversines with LogarithmsFrank Reed11 Oct 2020, 01:21
Online Meetings Tomorrow, Oct 11Frank Reed11 Oct 2020, 01:31
Re: Haversines with LogarithmsFrank Reed11 Oct 2020, 16:03
Historical US nautical charts and other mapsFrank Reed11 Oct 2020, 21:16
Re: Haversines with LogarithmsFrank Reed12 Oct 2020, 17:51
Re: 24MP DSLR 35mm LunarsFrank Reed15 Oct 2020, 01:55
Re: Problem: index correction by starFrank Reed15 Oct 2020, 18:53
Re: Navigation Training at Sea and in the Air - Free Online SeminarFrank Reed15 Oct 2020, 23:04
Re: Crelle's tablesFrank Reed17 Oct 2020, 18:17
No "Office Hours" todayFrank Reed18 Oct 2020, 08:42
USAF smartphone celestial patentFrank Reed18 Oct 2020, 22:58
Workshop this weekend: Celestial in the Age of SailFrank Reed20 Oct 2020, 15:49
My "Office Hours" sessions, schedule changeFrank Reed20 Oct 2020, 17:26
Re: Haversines with LogarithmsFrank Reed20 Oct 2020, 20:36
Navigation stars and a SpaceX MockshipFrank Reed21 Oct 2020, 19:56
Re: Navigation stars and a SpaceX MockshipFrank Reed22 Oct 2020, 02:08
French inertial-celestial systemFrank Reed22 Oct 2020, 21:27
Live, interactive "Office Hours" Oct 23 and Oct 25 (Friday and Sunday)Frank Reed23 Oct 2020, 03:14
Re: Haversines with LogarithmsFrank Reed23 Oct 2020, 07:36
Re: Live, interactive "Office Hours" Oct 23 and Oct 25 (Friday and Sunday)Frank Reed25 Oct 2020, 14:57
Live, interactive "Office Hours" TODAY and SundayFrank Reed30 Oct 2020, 15:21
Re: Lecky's mistakeFrank Reed31 Oct 2020, 04:06
Re: How do you set a Tide Clock ?Frank Reed1 Nov 2020, 20:02
Re: "Office Hours" today's session cancelledFrank Reed1 Nov 2020, 20:15
Re: Edward J WillisFrank Reed6 Nov 2020, 06:41
Re: "Office Hours" today's session cancelledFrank Reed6 Nov 2020, 06:52
Re: Where are we NavigatorFrank Reed6 Nov 2020, 20:48
Re: Where are we NavigatorFrank Reed6 Nov 2020, 22:50
Re: Where are we NavigatorFrank Reed7 Nov 2020, 07:31
Re: Edward J WillisFrank Reed7 Nov 2020, 07:46
My "Office Hours" this weekendFrank Reed11 Nov 2020, 20:21
Modern Celestial ONE: Sextants & Sun SightsFrank Reed11 Nov 2020, 20:29
Another "Where are we?" puzzleFrank Reed12 Nov 2020, 02:19
Re: Another "Where are we?" puzzleFrank Reed12 Nov 2020, 21:43
Celestial Navigation on a minesweeperFrank Reed12 Nov 2020, 23:32
Sextant practice in 2014Frank Reed13 Nov 2020, 06:48
Re: My "Office Hours" this weekendFrank Reed13 Nov 2020, 16:13
Re: Another "Where are we?" puzzleFrank Reed13 Nov 2020, 20:21
Re: My "Office Hours" (and Launch Lunch)Frank Reed15 Nov 2020, 21:45
Re: Curious star chartsFrank Reed17 Nov 2020, 06:55
Re: Curious star chartsFrank Reed17 Nov 2020, 16:39
Re: Curious star chartsFrank Reed17 Nov 2020, 22:43
Online meeting: 1200 EST / 1700 UTFrank Reed20 Nov 2020, 15:24
Re: Edward J WillisFrank Reed22 Nov 2020, 15:20
Re: Online meeting: 1800 EST / 2300 UTFrank Reed22 Nov 2020, 15:24
Re: Index Error - Comparison to SD per Nautical AlmanacFrank Reed26 Nov 2020, 06:09
Happy Thanksgiving to the NavList CommunityFrank Reed26 Nov 2020, 19:18
Celestial Navigation online chat Friday, SundayFrank Reed27 Nov 2020, 05:59
Re: Planetary CorrectionsFrank Reed28 Nov 2020, 17:40
British Air NavigationFrank Reed28 Nov 2020, 19:07
Latitude by Alnair : two degrees meridian altitudeFrank Reed30 Nov 2020, 19:36
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed1 Dec 2020, 02:44
Arecibo - GoneFrank Reed1 Dec 2020, 18:25
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed1 Dec 2020, 18:30
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed2 Dec 2020, 03:44
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed2 Dec 2020, 04:02
Money from celestial appsFrank Reed3 Dec 2020, 20:28
Re: Money from celestial appsFrank Reed3 Dec 2020, 20:59
Polaris LunarsFrank Reed4 Dec 2020, 16:11
Office Hours, online video meeting today (45 minutes from now)Frank Reed4 Dec 2020, 16:17
Re: Polaris LunarsFrank Reed5 Dec 2020, 04:21
Navigation stars over Australia this morningFrank Reed5 Dec 2020, 18:14
Flight 19 lost, 75 years ago todayFrank Reed5 Dec 2020, 18:43
Re: C. 1900 mercury AHFrank Reed6 Dec 2020, 20:00
Online "Office Hours", 3pm Pacific Time (2300 UT)Frank Reed6 Dec 2020, 20:02
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed7 Dec 2020, 03:56
Poor BecruxFrank Reed7 Dec 2020, 04:52
Saturn and Jupiter: one degree separationFrank Reed10 Dec 2020, 23:13
Re: Saturn and Jupiter: one degree separationFrank Reed12 Dec 2020, 02:52
Re: New Scientist: GPS mystery is making ships appear to teleport and move in circlesFrank Reed13 Dec 2020, 00:01
Re: Online "Office Hours", Sunday 6m EST / 3pm PST (2300 UT)Frank Reed13 Dec 2020, 02:27
Latitude by Regor : 1.5 degrees meridian altitudeFrank Reed13 Dec 2020, 03:15
2021 Air Almanac pdfFrank Reed17 Dec 2020, 20:21
Jupiter-Moon Lunar from a photoFrank Reed19 Dec 2020, 04:13
Re: Jupiter-Moon Lunar from a photoFrank Reed19 Dec 2020, 04:28
Re: Zenith distance and Ho question.Frank Reed19 Dec 2020, 18:23
Re: Zenith distance and Ho question.Frank Reed19 Dec 2020, 23:52
Re: Zenith distance and Ho question.Frank Reed20 Dec 2020, 06:17
Re: Saturn and Jupiter: one degree separationFrank Reed20 Dec 2020, 18:35
Re: Jupiter-Moon Lunar from a photoFrank Reed20 Dec 2020, 21:46
More sunlight in Greenland than in the AmazonFrank Reed23 Dec 2020, 15:05
Re: The Great ConjunctionFrank Reed23 Dec 2020, 15:31
Re: Jupiter-Moon Lunar from a photoFrank Reed23 Dec 2020, 19:35
Re: Jupiter-Moon Lunar from a photoFrank Reed24 Dec 2020, 15:46
Online meetings, Office Hours, Christmas & New Years DayFrank Reed24 Dec 2020, 17:43
Re: Latitude by two star altitudes using 19.century BowditchFrank Reed24 Dec 2020, 22:48
Re: More sunlight in Greenland than in the AmazonFrank Reed25 Dec 2020, 04:53
Re: Bygrave Equations with a CalculatorFrank Reed25 Dec 2020, 15:52
Re: Bygrave Equations with a CalculatorFrank Reed26 Dec 2020, 04:25
Re: More sunlight in Greenland than in the AmazonFrank Reed26 Dec 2020, 16:40
International star name pronunciationsFrank Reed26 Dec 2020, 18:04
Re: Jupiter-Moon Lunar from a photoFrank Reed27 Dec 2020, 03:10
Re: Bygrave Equations with a CalculatorFrank Reed27 Dec 2020, 03:22
Re: Online meetings, Office Hours, Christmas & New Years DayFrank Reed27 Dec 2020, 20:08
Obscure Nautical Almanac starFrank Reed27 Dec 2020, 22:44
Two years after Galileo: an English telescope in JapanFrank Reed28 Dec 2020, 17:02
Re: Obscure Nautical Almanac starFrank Reed28 Dec 2020, 17:59
Re: Obscure Nautical Almanac starFrank Reed28 Dec 2020, 18:13
Re: More sunlight in Greenland than in the AmazonFrank Reed28 Dec 2020, 18:13
Re: Obscure Nautical Almanac starFrank Reed29 Dec 2020, 16:27
Re: Obscure Nautical Almanac starFrank Reed30 Dec 2020, 01:02
Re: Dating Hughes and Son sextantsFred Hebard4 Jan 2020, 21:11
Re: Dating Hughes and Son sextantsFred Hebard5 Jan 2020, 05:06
Re: Dating Hughes and Son sextantsFred Hebard5 Jan 2020, 19:19
Re: Hardly ever get an LOP than 20 NM - why?Fred Hebard17 Jan 2020, 14:29
Re: Cosine formula to solve a right spherical triangle?Fred Hebard22 Jan 2020, 16:35
Re: April 28: Venus maximum brillianceFred Hebard26 Apr 2020, 11:21
Re: Hybrid artificial horizonFred Hebard25 Jul 2020, 21:28
Re: CN and my PhD thesisFred Hebard22 Aug 2020, 16:06
Re: Kollsman periscopic sextant mountFred Hebard22 Sep 2020, 17:49
Re: USAF smartphone celestial patentFred Hebard19 Oct 2020, 08:53
Re: Edward J WillisFred Hebard7 Nov 2020, 06:38
Re: Edward J WillisFred Hebard7 Nov 2020, 06:40
Re: Two years after Galileo: an English telescope in JapanFred Hebard28 Dec 2020, 17:48
Re: Two years after Galileo: an English telescope in JapanFred Hebard28 Dec 2020, 20:52
Re: Two years after Galileo: an English telescope in JapanFred Hebard28 Dec 2020, 21:02
Re: Two years after Galileo: an English telescope in JapanFred Hebard29 Dec 2020, 06:09
Re: Correcting for the movement of an observer: a plausible explanation?Gary LaPook1 Jan 2020, 01:08
A strange addition to a sextantGary LaPook4 Jan 2020, 19:14
Re: A strange addition to a sextantGary LaPook4 Jan 2020, 21:42
GPS jammingGary LaPook16 Jan 2020, 08:20
Re: No DR position. How can you get an accurate celestial fix?Gary LaPook21 Jan 2020, 19:17
Re: No DR position. How can you get an accurate celestial fix?Gary LaPook23 Jan 2020, 19:26
Navigation devices available now on ebay.Gary LaPook25 Jan 2020, 07:05
Re: Navigation devices available now on ebay.Gary LaPook25 Jan 2020, 23:17
Re: Navigation devices available now on ebay.Gary LaPook27 Jan 2020, 05:02
Re: Earliest Crescent Moon VisibilityGary LaPook27 Jan 2020, 17:30
Re: History & development of HO-249Gary LaPook3 Feb 2020, 00:21
Re: History & development of HO-249Gary LaPook5 Feb 2020, 18:46
Re: History & development of HO-249Gary LaPook5 Feb 2020, 19:25
Re: History & development of HO-249Gary LaPook5 Feb 2020, 19:29
Re: History & development of HO-249Gary LaPook5 Feb 2020, 19:30
Re: Kollsman periscopic sextant mountGary LaPook9 Feb 2020, 05:54
Re: Kollsman periscopic sextant mountGary LaPook10 Feb 2020, 06:09
Re: Kollsman periscopic sextant mountGary LaPook10 Feb 2020, 06:46
Re: Kollsman periscopic sextant mountGary LaPook16 Feb 2020, 07:13
Re: Choosing right A-10: how to?Gary LaPook27 Feb 2020, 06:55
Re: Choosing right A-10: how to?Gary LaPook29 Feb 2020, 01:40
Re: Choosing right A-10: how to?Gary LaPook2 Mar 2020, 08:13
Re: Modern Bygrave Slide Rule EmulatorGary LaPook6 Mar 2020, 19:06
Re: Modern Bygrave Slide Rule EmulatorGary LaPook10 Mar 2020, 20:42
Re: H.O. 249: rounding HoGary LaPook18 Mar 2020, 07:36
Re: Index error vs. index correctionGary LaPook22 Mar 2020, 01:39
Re: A12 vs A8-A sextantsGary LaPook22 Mar 2020, 19:02
Re: A12 vs A8-A sextantsGary LaPook22 Mar 2020, 19:06
Re: A12 vs A8-A sextantsGary LaPook24 Mar 2020, 03:30
Re: NavList-donated Amelia Earhart signGary LaPook7 Apr 2020, 19:31
Re: False horizon under the Moon, under the Sun too?Gary LaPook20 Apr 2020, 18:58
Re: False horizon under the Moon, under the Sun too?Gary LaPook21 Apr 2020, 20:55
Re: Sign of d in HO249Gary LaPook24 Apr 2020, 00:37
Re: WWV is audible again (here)Gary LaPook24 Apr 2020, 19:54
Re: Paper: Geometry of Elliptical Probability Contours...Gary LaPook24 Apr 2020, 19:56
Re: Radio from the middle of nowhereGary LaPook29 Apr 2020, 22:33
Re: Radio from the middle of nowhereGary LaPook30 Apr 2020, 05:07
Re: Radio from the middle of nowhereGary LaPook30 Apr 2020, 05:16
Re: Lockdown Escape (Madness?)Gary LaPook30 Apr 2020, 21:43
Re: Celestial Navigation licensing examsGary LaPook1 May 2020, 19:53
Re: Celestial Navigation licensing examsGary LaPook1 May 2020, 19:54
Air Almanac for 2020Gary LaPook5 May 2020, 19:56
Re: Non-graphical way to solve a wind triangleGary LaPook12 May 2020, 07:46
Re: Non-graphical way to solve a wind triangleGary LaPook12 May 2020, 07:51
Re: Non-graphical way to solve a wind triangleGary LaPook12 May 2020, 18:44
Re: Kollsman Type 106C U.S. Navy MK IX Aircraft CompassGary LaPook19 May 2020, 18:26
Re: Celestial in the thin air!Gary LaPook5 Jun 2020, 18:22
Re: Ww2 A-8 octantGary LaPook10 Jun 2020, 18:25
Re: A-10 Sextant Maintenance ManualGary LaPook26 Jun 2020, 07:40
Re: A-10 Sextant Maintenance ManualGary LaPook26 Jun 2020, 07:48
Re: Bob Goethe's Mark 2 Navigators slide rule, test drive comparisons.Gary LaPook13 Jul 2020, 18:34
Re: M.F. Maury and the progress of historyGary LaPook14 Jul 2020, 06:55
Re: Slide Rule Emulators relocatedGary LaPook17 Jul 2020, 17:44
Re: NavList HamsGary LaPook17 Jul 2020, 17:46
Re: Hybrid artificial horizonGary LaPook20 Jul 2020, 10:10
Re: Making an artificial horizonGary LaPook25 Jul 2020, 06:12
Re: Kollsman periscopic sextant mountGary LaPook1 Sep 2020, 07:45
Re: Moon corrections: how computation order affects the resultGary LaPook1 Sep 2020, 19:48
Re: Kollsman periscopic sextant and mountGary LaPook3 Sep 2020, 06:36
Re: Kollsman periscopic sextant and mountGary LaPook3 Sep 2020, 06:56
Re: Good Book On Air NavigationGary LaPook4 Sep 2020, 04:02
Re: Good Book On Air NavigationGary LaPook4 Sep 2020, 04:29
Re: Latitude by PolarisGary LaPook13 Sep 2020, 21:55
Re: Single LOP is enough?Gary LaPook15 Sep 2020, 18:29
Re: Kollsman periscopic sextant mountGary LaPook21 Sep 2020, 08:38
Re: Kollsman periscopic sextant mountGary LaPook21 Sep 2020, 19:29
Re: Kollsman periscopic sextant mountGary LaPook21 Sep 2020, 21:23
Re: Kollsman periscopic sextant mountGary LaPook22 Sep 2020, 07:43
Re: Kollsman periscopic sextant mountGary LaPook22 Sep 2020, 08:12
Re: Kollsman periscopic sextant mountGary LaPook22 Sep 2020, 08:16
Re: Cel Nav Training FilmGary LaPook22 Sep 2020, 08:51
Units in NavigationGary LaPook24 Sep 2020, 01:30
Re: Units in NavigationGary LaPook24 Sep 2020, 09:39
Re: Units in NavigationGary LaPook24 Sep 2020, 20:45
Re: Units in NavigationGary LaPook25 Sep 2020, 18:44
Re: Units in NavigationGary LaPook26 Sep 2020, 09:27
Re: Units in NavigationGary LaPook26 Sep 2020, 18:11
Re: Units in NavigationGary LaPook27 Sep 2020, 03:00
Re: Units in NavigationGary LaPook27 Sep 2020, 03:03
Re: Units in NavigationGary LaPook27 Sep 2020, 21:24
Re: Units in NavigationGary LaPook27 Sep 2020, 21:42
Re: Units in NavigationGary LaPook28 Sep 2020, 07:31
Re: Units in NavigationGary LaPook28 Sep 2020, 07:46
Re: Units in NavigationGary LaPook28 Sep 2020, 19:57
Re: Units in NavigationGary LaPook28 Sep 2020, 20:01
Re: Units in NavigationGary LaPook29 Sep 2020, 00:02
Re: GHA of the MoonGary LaPook2 Oct 2020, 08:22
Re: Haversines with LogarithmsGary LaPook12 Oct 2020, 23:41
Re: Experience with an artifical horizonGary LaPook14 Oct 2020, 17:12
Re: Haversines with LogarithmsGary LaPook14 Oct 2020, 18:01
Re: Experience with an artifical horizonGary LaPook16 Oct 2020, 17:26
Re: Navigation Training at Sea and in the Air - Free Online SeminarGary LaPook17 Oct 2020, 05:43
Re: Navigation Training at Sea and in the Air - Free Online SeminarGary LaPook17 Oct 2020, 20:42
Re: Experience with an artifical horizonGary LaPook18 Oct 2020, 22:26
Re: Smithsonian Collection of Aircraft SextantsGary LaPook20 Oct 2020, 03:53
Re: Curious sextant add-onGary LaPook21 Oct 2020, 21:06
Re: Curious sextant add-onGary LaPook22 Oct 2020, 08:08
Re: Haversines with LogarithmsGary LaPook23 Oct 2020, 06:56
Re: Haversines with LogarithmsGary LaPook23 Oct 2020, 19:19
Re: Question from the FNGGary LaPook28 Oct 2020, 05:18
Re: Question from the FNGGary LaPook28 Oct 2020, 05:36
Re: Question from the FNGGary LaPook28 Oct 2020, 05:43
Digital watches as chronometersGary LaPook28 Oct 2020, 08:37
Re: Digital watches as chronometersGary LaPook28 Oct 2020, 18:29
Re: Digital watches as chronometersGary LaPook28 Oct 2020, 18:55
Re: The Nautical Mile?Gary LaPook31 Oct 2020, 23:27
Re: The Nautical Mile?Gary LaPook1 Nov 2020, 08:53
Re: The Nautical Mile?Gary LaPook1 Nov 2020, 09:06
Re: Radians and DegreesGary LaPook5 Nov 2020, 17:59
Re: Radians and DegreesGary LaPook14 Nov 2020, 06:10
Re: Curious star chartsGary LaPook17 Nov 2020, 22:37
GPS and measurement of Mount EverestGary LaPook28 Nov 2020, 06:42
Re: Polar distance of PolarisGary LaPook8 Dec 2020, 01:18
Re: Polar distance of PolarisGary LaPook9 Dec 2020, 08:47
Today's online discussionGary LaPook14 Dec 2020, 06:37
Re: Smith's Mk2T (twilight) Periscopic SextantGary LaPook14 Dec 2020, 20:57
Re: Today's online discussionGary LaPook14 Dec 2020, 21:46
Re: Today's online discussionGary LaPook14 Dec 2020, 21:50
GPS outagesGary LaPook18 Dec 2020, 23:47
Re: MK2A periscope sextantGary LaPook23 Dec 2020, 03:49
Re: Flight 19 lost, 75 years ago todayGary LaPook24 Dec 2020, 18:55
How do you set a Tide Clock ?Geoff Hitchcox1 Nov 2020, 04:51
Re: NavlistGeoffrey Butt12 May 2020, 14:54
Re: Mystery Navy DeviceGeoffrey Kolbe12 Jan 2020, 13:18
Re: Hardly ever get an LOP than 20 NM - why?Geoffrey Kolbe18 Jan 2020, 06:50
Re: Hardly ever get an LOP than 20 NM - why?Geoffrey Kolbe18 Jan 2020, 07:34
Re: Celestial navigation: easier basic principle?Geoffrey Kolbe27 Jan 2020, 06:54
Re: Captain Cook & celestial navigationGeoffrey Kolbe30 Jan 2020, 06:58
Re: Captain Cook & celestial navigationGeoffrey Kolbe30 Jan 2020, 07:44
Re: Moon Venus Lunar - Interpretation of resultsGeoffrey Kolbe31 Jan 2020, 15:06
Re: Captain Cook & celestial navigationGeoffrey Kolbe2 Feb 2020, 08:10
Re: Captain Cook & celestial navigationGeoffrey Kolbe3 Feb 2020, 05:17
Re: Captain Cook & celestial navigationGeoffrey Kolbe3 Feb 2020, 05:36
Re: Captain Cook & celestial navigationGeoffrey Kolbe3 Feb 2020, 06:20
Re: A-12 ExperiencesGeoffrey Kolbe9 Feb 2020, 17:47
Re: A-12 ExperiencesGeoffrey Kolbe10 Feb 2020, 05:56
Re: Please help to identify a sextantGeoffrey Kolbe18 Feb 2020, 16:56
Re: Longitudes greater than 180Geoffrey Kolbe4 Mar 2020, 07:44
Re: AH - sandwich (working concept)Geoffrey Kolbe5 Mar 2020, 07:06
Re: ChronographGeoffrey Kolbe5 Mar 2020, 09:14
Re: Please help to identify a sextantGeoffrey Kolbe21 Mar 2020, 20:20
Re: Maskelyne: Astronomer RoyalGeoffrey Kolbe26 Mar 2020, 06:13
Re: A12 vs A8-A sextantsGeoffrey Kolbe25 Apr 2020, 18:16
Re: April 28: Venus maximum brillianceGeoffrey Kolbe26 Apr 2020, 15:56
Re: A12 vs A8-A sextantsGeoffrey Kolbe28 Apr 2020, 06:48
Re: Radio from the middle of nowhereGeoffrey Kolbe30 Apr 2020, 06:26
Calculators "old technology"Geoffrey Kolbe30 Apr 2020, 17:50
Re: Position from altitude and azimuth.Geoffrey Kolbe12 May 2020, 09:55
Re: Celestaire Astra IIIB backlashGeoffrey Kolbe15 Jun 2020, 15:11
Re: My sextant repairGeoffrey Kolbe20 Jun 2020, 18:56
Re: Sun's GenderGeoffrey Kolbe22 Jun 2020, 08:03
Re: The History of Celestial Navigation (2020)Geoffrey Kolbe28 Jul 2020, 08:27
Martin Creamer dies at 104Geoffrey Kolbe8 Sep 2020, 14:32
Re: Units in NavigationGeoffrey Kolbe24 Sep 2020, 05:16
Re: Edward J WillisGeoffrey Kolbe8 Nov 2020, 09:29
Re: Astronomy or AstrologyGeoffrey Kolbe13 Nov 2020, 06:16
Re: I'm forever blowing (sextant) bubblesGeoffrey Kolbe25 Nov 2020, 19:12
Re: 1st type Hand held Bagnold Sun CompassGeoffrey Kolbe28 Nov 2020, 19:13
Re: 1st type Hand held Bagnold Sun CompassGeoffrey Kolbe29 Nov 2020, 06:09
Re: More Cocked HatsGeorge Kaplan25 Jul 2020, 20:31
Re: The History of Celestial Navigation (2020)George Kaplan30 Jul 2020, 02:08
Re: The History of Celestial Navigation (2020)George Kaplan31 Jul 2020, 00:42
Re: USNO web app clonedGeorge Kaplan19 Sep 2020, 18:11
Re: USNO web app clonedGeorge Kaplan19 Sep 2020, 20:55
Re: Latitude by Alnair : two degrees meridian altitudeGeorge Kaplan1 Dec 2020, 14:39
Re: Kollsman periscopic sextant mountGlen Swanson21 Sep 2020, 08:03
Beginning celestial navigation methodGrace O'Farrell12 May 2020, 10:37
Re: Beginning celestial navigation methodGrace O'Farrell13 May 2020, 15:52
Re: Beginning celestial navigation methodGrace O'Farrell13 May 2020, 16:24
Re: Beginning celestial navigation methodGrace O'Farrell13 May 2020, 16:43
Re: Beginning celestial navigation methodGrace O'Farrell13 May 2020, 17:08
Re: Beginning celestial navigation methodGrace O'Farrell14 May 2020, 14:41
Re: Beginning celestial navigation methodGrace O'Farrell15 May 2020, 11:13
Re: Beginning celestial navigation methodGrace O'Farrell15 May 2020, 18:50
Non-graphical way to solve a wind triangleGreg B11 May 2020, 01:51
Re: My Marine E6M ( A marine version of the E6B )Greg B12 May 2020, 13:42
Re: NavlistGreg Hill2 May 2020, 12:44
Re: NavList HamsGreg Licfi3 May 2020, 12:40
My Marine E6M ( A marine version of the E6B )Greg Licfi11 May 2020, 01:21
Re: SpaceX Starlink launch: photo celestialGreg Rudzinski9 Jan 2020, 15:23
Re: Hardly ever get an LOP than 20 NM - why?Greg Rudzinski17 Jan 2020, 14:38
Re: Celestial Navigation classes in the UK in JuneGreg Rudzinski8 Feb 2020, 20:33
Martelli Table ProvenanceGreg Rudzinski24 Feb 2020, 15:07
Re: Martelli Table ProvenanceGreg Rudzinski24 Feb 2020, 15:56
Re: Martelli Table ProvenanceGreg Rudzinski24 Feb 2020, 18:18
Sunrise Time Sight /Amplitude LOPGreg Rudzinski1 Mar 2020, 21:49
Smart Phone CNGreg Rudzinski2 Mar 2020, 14:12
Re: Smart Phone CNGreg Rudzinski3 Mar 2020, 15:47
Re: ChronographGreg Rudzinski4 Mar 2020, 14:20
Re: ChronographGreg Rudzinski4 Mar 2020, 14:31
Re: ChronographGreg Rudzinski4 Mar 2020, 15:16
Re: ChronographGreg Rudzinski4 Mar 2020, 19:18
Re: Smart Phone CNGreg Rudzinski5 Mar 2020, 02:52
Re: Smart Phone CNGreg Rudzinski5 Mar 2020, 19:51
Re: Modern Bygrave Slide Rule EmulatorGreg Rudzinski6 Mar 2020, 20:49
Re: Smart Phone CNGreg Rudzinski6 Mar 2020, 23:05
Re: Smart Phone CNGreg Rudzinski7 Mar 2020, 10:55
Custom Ex-Meridian Table for Slide RuleGreg Rudzinski8 Mar 2020, 18:10
Re: Custom Ex-Meridian Table for Slide RuleGreg Rudzinski9 Mar 2020, 02:07
Re: Using the sun's direct and reflected image to determine a sextant's IEGreg Rudzinski9 Mar 2020, 17:21
Re: Using the sun's direct and reflected image to determine a sextant's IEGreg Rudzinski9 Mar 2020, 19:39
Custom Compact Sight Reduction TablesGreg Rudzinski9 Mar 2020, 22:13
Re: Using the sun's direct and reflected image to determine a sextant's IEGreg Rudzinski9 Mar 2020, 23:34
Re: Navigate to this islandGreg Rudzinski19 Mar 2020, 20:08
Re: Navigate to this islandGreg Rudzinski19 Mar 2020, 20:10
Re: Longitude by Time Sight Using a Slide RuleGreg Rudzinski22 Mar 2020, 23:19
Re: Venus in daylightGreg Rudzinski29 Mar 2020, 00:41
Re: NavList ResourcesGreg Rudzinski14 Apr 2020, 14:38
Re: Calibrating a Bris with a Davis mk15 sextantGreg Rudzinski26 Apr 2020, 17:55
Re: Lockdown Escape (Madness?)Greg Rudzinski27 Apr 2020, 13:08
Re: Calibrating a Bris with a Davis mk15 sextantGreg Rudzinski27 Apr 2020, 21:08
Re: Calibrating a Bris with a Davis mk15 sextantGreg Rudzinski28 Apr 2020, 13:05
Re: Lockdown Escape (Madness?)Greg Rudzinski29 Apr 2020, 16:16
Re: Hav-Doniol re-visitedGreg Rudzinski30 Apr 2020, 00:56
Re: Lockdown Escape (Madness?)Greg Rudzinski30 Apr 2020, 11:34
Re: Calculators "old technology"Greg Rudzinski30 Apr 2020, 17:57
Re: Height CorrectionGreg Rudzinski7 May 2020, 12:52
Re: Height CorrectionGreg Rudzinski8 May 2020, 12:48
Re: Intercept Method or Marcq St. HilaireGreg Rudzinski14 May 2020, 12:27
Re: Mark III plastic sextantGreg Rudzinski6 Jun 2020, 21:18
Re: Ex-Meridian Sight using InmansGreg Rudzinski10 Jun 2020, 17:27
Re: Ex-Meridian Sight using InmansGreg Rudzinski10 Jun 2020, 20:30
Re: Ex-Meridian Sight using InmansGreg Rudzinski14 Jun 2020, 14:16
Re: Sextant Collimation ErrorGreg Rudzinski26 Jun 2020, 13:54
Re: A ramble on "new improved methods"Greg Rudzinski28 Jun 2020, 13:02
Re: A ramble on "new improved methods"Greg Rudzinski29 Jun 2020, 12:40
Re: A ramble on "new improved methods"Greg Rudzinski30 Jun 2020, 14:52
Re: A ramble on "new improved methods"Greg Rudzinski1 Jul 2020, 12:17
Re: Timex Iron Man Watch=kaputGreg Rudzinski2 Jul 2020, 14:49
Re: Timex Iron Man Watch=kaputGreg Rudzinski2 Jul 2020, 15:44
Re: Timex Iron Man Watch=kaputGreg Rudzinski2 Jul 2020, 23:25
First Surface Mirror Modification for Davis Artificial HorizonGreg Rudzinski13 Jul 2020, 00:21
Re: Venus in daylight this monthGreg Rudzinski14 Jul 2020, 12:45
Re: Venus in daylight this monthGreg Rudzinski14 Jul 2020, 17:07
Moon Venus Camera LunarGreg Rudzinski17 Jul 2020, 12:54
Re: Moon Venus Camera LunarGreg Rudzinski17 Jul 2020, 15:28
Re: Backstaff washed up on the beachGreg Rudzinski18 Jul 2020, 12:41
Re: Backstaff washed up on the beachGreg Rudzinski18 Jul 2020, 13:03
Dip Short DSLR Camera CN SunGreg Rudzinski19 Jul 2020, 14:36
Re: Hybrid artificial horizonGreg Rudzinski20 Jul 2020, 02:27
Re: Hybrid artificial horizonGreg Rudzinski20 Jul 2020, 16:14
Re: Comet NeowiseGreg Rudzinski21 Jul 2020, 00:48
Re: Comet NeowiseGreg Rudzinski22 Jul 2020, 01:02
Re: Essay: Navigating by the Heavens...Greg Rudzinski22 Jul 2020, 18:37
Re: Hybrid artificial horizonGreg Rudzinski23 Jul 2020, 20:37
Re: Essay: Navigating by the Heavens...Greg Rudzinski24 Jul 2020, 12:34
Re: Essay: Navigating by the Heavens...Greg Rudzinski24 Jul 2020, 20:29
Re: Hybrid artificial horizonGreg Rudzinski24 Jul 2020, 22:26
Re: Hybrid artificial horizonGreg Rudzinski25 Jul 2020, 13:30
Re: Hybrid artificial horizonGreg Rudzinski25 Jul 2020, 19:50
Re: Hybrid artificial horizonGreg Rudzinski25 Jul 2020, 20:49
Re: Plotting sheetsGreg Rudzinski30 Jul 2020, 21:44
Re: Celestial Navigation Exercises and Plotting SheetsGreg Rudzinski31 Jul 2020, 19:53
Pre Hurricane LunarGreg Rudzinski2 Aug 2020, 06:17
Re: Latitude by photoGreg Rudzinski7 Aug 2020, 13:42
Re: Latitude by photoGreg Rudzinski7 Aug 2020, 23:02
Re: Latitude by photoGreg Rudzinski8 Aug 2020, 00:46
Re: Latitude by photoGreg Rudzinski9 Aug 2020, 02:45
Re: Moon Rise - I'm Missing SomethingGreg Rudzinski10 Aug 2020, 21:38
Re: Long by Chron - Wikipedia articleGreg Rudzinski17 Aug 2020, 10:38
Re: Average altitude of a celestial sightGreg Rudzinski18 Aug 2020, 00:12
Re: Who needs a compass? Who needs a sextant?Greg Rudzinski18 Aug 2020, 23:52
Calibrating New 24MP DSLR Canon Rebel for CNGreg Rudzinski19 Aug 2020, 18:28
Re: Calibrating New 24MP DSLR Canon Rebel for CNGreg Rudzinski21 Aug 2020, 12:41
Latitude 48 Article Image as CN Piloting ExerciseGreg Rudzinski23 Aug 2020, 12:22
Re: Latitude 48 Article Image as CN Piloting ExerciseGreg Rudzinski23 Aug 2020, 16:37
Re: Latitude 48 Article Image as CN Piloting ExerciseGreg Rudzinski23 Aug 2020, 16:53
Re: Latitude 48 Article Image as CN Piloting ExerciseGreg Rudzinski23 Aug 2020, 20:30
Re: Navigation with Moon imagesGreg Rudzinski24 Aug 2020, 11:39
Re: Latitude 48 Article Image as CN Piloting ExerciseGreg Rudzinski25 Aug 2020, 04:22
Re: Navigation with Moon imagesGreg Rudzinski26 Aug 2020, 01:59
Re: Navigation with Moon imagesGreg Rudzinski27 Aug 2020, 20:53
Re: Navigation with Moon imagesGreg Rudzinski28 Aug 2020, 19:50
Lunar Jupiter Lunar Calibration ImageGreg Rudzinski29 Aug 2020, 04:07
Re: Longitude at noonGreg Rudzinski8 Sep 2020, 22:59
Re: Digital SextantGreg Rudzinski10 Sep 2020, 13:21
Sound Tracks for LunarsGreg Rudzinski11 Sep 2020, 00:13
Re: Beta testers wantedGreg Rudzinski12 Sep 2020, 22:09
Re: Single LOP is enough?Greg Rudzinski15 Sep 2020, 18:24
Re: Solve this Moon photo!Greg Rudzinski27 Sep 2020, 15:48
Re: Solve this Moon photo!Greg Rudzinski28 Sep 2020, 02:59
Re: Azimuth diagram of Hanno IxGreg Rudzinski28 Sep 2020, 13:06
Re: Solve this Moon photo!Greg Rudzinski28 Sep 2020, 13:30
Re: Solve this Moon photo!Greg Rudzinski28 Sep 2020, 20:30
Re: Haversines with LogarithmsGreg Rudzinski11 Oct 2020, 18:51
Re: Haversines with LogarithmsGreg Rudzinski12 Oct 2020, 06:03
Re: Haversines with LogarithmsGreg Rudzinski12 Oct 2020, 14:28
Re: Experience with an artifical horizonGreg Rudzinski13 Oct 2020, 22:04
24MP DSLR 35mm LunarsGreg Rudzinski14 Oct 2020, 13:26
Re: 24MP DSLR 35mm LunarsGreg Rudzinski14 Oct 2020, 16:08
Re: 24MP DSLR 35mm LunarsGreg Rudzinski15 Oct 2020, 02:27
Re: Experience with an artifical horizonGreg Rudzinski16 Oct 2020, 01:06
Re: Hav-Doniol re-visitedGreg Rudzinski22 Oct 2020, 23:26
Re: Hav-Doniol re-visitedGreg Rudzinski23 Oct 2020, 00:20
Re: Hav-Doniol re-visitedGreg Rudzinski25 Oct 2020, 20:29
Re: Simultaneous near limb - far limb lunarsGreg Rudzinski26 Oct 2020, 23:19
Re: Digital watches as chronometersGreg Rudzinski28 Oct 2020, 18:02
Re: Hanno Ix azimuth diagram flowchart?Greg Rudzinski29 Oct 2020, 13:22
Re: Another "Where are we?" puzzleGreg Rudzinski12 Nov 2020, 14:55
Re: Another "Where are we?" puzzleGreg Rudzinski12 Nov 2020, 18:45
Re: Another "Where are we?" puzzleGreg Rudzinski12 Nov 2020, 19:22
Re: Sextant practice in 2014Greg Rudzinski13 Nov 2020, 12:35
Re: Definition Intercept/St. Hilaire MethodGreg Rudzinski13 Nov 2020, 23:25
Re: Casio fx-300ES Plus (2nd Edition)Greg Rudzinski14 Nov 2020, 02:13
Re: Casio fx-300ES Plus (2nd Edition)Greg Rudzinski14 Nov 2020, 19:53
Re: South Pole CelestialGreg Rudzinski25 Nov 2020, 17:18
Mars N.L. Lunar by DSLR 35mm lensGreg Rudzinski27 Nov 2020, 02:32
Re: Mars N.L. Lunar by DSLR 35mm lensGreg Rudzinski28 Nov 2020, 02:10
Low Altitude Sun Artificial Horizon ExerciseGreg Rudzinski29 Nov 2020, 16:50
Re: Low Altitude Sun Artificial Horizon ExerciseGreg Rudzinski1 Dec 2020, 00:50
Re: Low Altitude Sun Artificial Horizon ExerciseGreg Rudzinski3 Dec 2020, 19:02
Re: Low Altitude Sun Artificial Horizon ExerciseGreg Rudzinski3 Dec 2020, 19:11
Re: Big Dipper and calculator historyGreg Rudzinski6 Dec 2020, 13:15
Re: Butterfly Bris PrototypeGreg Rudzinski7 Dec 2020, 13:35
200mm Lens Calibration Using DoublerGreg Rudzinski9 Dec 2020, 22:37
Re: Davis sextant plasticGreg Rudzinski11 Dec 2020, 19:09
Re: Davis sextant plasticGreg Rudzinski12 Dec 2020, 17:42
Re: Saturn and Jupiter: one degree separationGreg Rudzinski12 Dec 2020, 23:49
Re: Saturn and Jupiter: one degree separationGreg Rudzinski14 Dec 2020, 00:37
Re: Jupiter-Moon Lunar from a photoGreg Rudzinski19 Dec 2020, 15:08
Re: Jupiter-Moon Lunar from a photoGreg Rudzinski19 Dec 2020, 19:21
Re: Jupiter-Moon Lunar from a photoGreg Rudzinski21 Dec 2020, 04:30
Re: The Great ConjunctionGreg Rudzinski21 Dec 2020, 23:52
Re: Help Please - paper by Griffiths? on all haversine methodsGreg Rudzinski26 Dec 2020, 13:48
Re: Christmas week QuizzesGreg Rudzinski26 Dec 2020, 16:40
Re: Christmas week QuizzesGreg Rudzinski27 Dec 2020, 15:16
Re: Christmas week QuizzesGreg Rudzinski28 Dec 2020, 21:22
Trouble solving for spherical triangleHahns Burg11 Jul 2020, 23:36
Re: Trouble solving for spherical triangleHahns Burg12 Jul 2020, 12:21
Re: Navigator's Slide RuleHahns Burg12 Jul 2020, 13:19
Novice navigator with a Freiberger sextantHans van der Zeijden9 Sep 2020, 18:42
Compass direction from MoonHerman Dekker16 Jan 2020, 18:39
Earliest Crescent Moon VisibilityHerman Dekker27 Jan 2020, 14:27
Re: Earliest Crescent Moon VisibilityHerman Dekker29 Jan 2020, 11:31
Re: Katherine Johnson/Browser trickHerman Dekker28 Feb 2020, 08:32
Re: Sun-Venus distance observationHerman Dekker27 Mar 2020, 19:46
Re: Celestial in the Age of Sail, April 7-9, onlineHerman Dekker1 Apr 2020, 09:11
Re: Nautical Almanac AppHerman Dekker5 Apr 2020, 07:21
Re: Nautical Almanac AppHerman Dekker5 Apr 2020, 21:39
Re: Meridian Passage Table, Daily PagesHerman Dekker7 Apr 2020, 08:30
STARPILOT TI-89(Titanium) calculator program update.Herman Dekker9 Apr 2020, 17:50
Re: Anti-spoof appHerman Dekker12 Apr 2020, 07:21
USNO Nav. Star Chart how Old?Herman Dekker3 Jun 2020, 20:36
Re: Problem with Frank Reed updated online almanacHerman Dekker10 Sep 2020, 21:00
Re: Problem with Frank Reed updated online almanacHerman Dekker11 Sep 2020, 06:27
Re: USNO web app clonedHerman Dekker16 Sep 2020, 06:09
Old navigation books collectionHerman Dekker5 Oct 2020, 20:43
How long until Sun goes down?Herman Dekker13 Oct 2020, 18:10
Re: Crelle's tablesHerman Dekker17 Oct 2020, 07:17
Re: Hanno Ix azimuth diagram flowchart?Herman Dekker30 Oct 2020, 09:33
Re: 1st type Hand held Bagnold Sun CompassHerman Dekker29 Nov 2020, 02:21
Re: Polar distance of PolarisHerman Dekker8 Dec 2020, 02:41
Re: 2021 Air Almanac pdfHerman Dekker17 Dec 2020, 21:14
Re: Christmas week QuizzesHerman Dekker26 Dec 2020, 21:32
Re: Curve fitting for noon SunHewitt Schlereth14 Jan 2020, 00:38
Re: Hardly ever get an LOP than 20 NM - why?Hewitt Schlereth17 Jan 2020, 19:58
Re: Hardly ever get an LOP than 20 NM - why?Hewitt Schlereth18 Jan 2020, 23:03
Re: Online Workshop: Lunars, May 14-16Hewitt Schlereth19 Apr 2020, 21:08
Re: Spare parts for Mark IX sextantHewitt Schlereth12 Jul 2020, 23:54
Re: M.F. Maury and the progress of historyHewitt Schlereth14 Jul 2020, 22:45
Re: M.F. Maury and the progress of historyHewitt Schlereth16 Jul 2020, 20:28
Re: Moon Venus Camera LunarHewitt Schlereth18 Jul 2020, 18:34
Re: One of Hewitt Schlereth's books just got plugged on YouTube.Hewitt Schlereth26 Jul 2020, 19:57
Re: Expensive toysHewitt Schlereth3 Aug 2020, 21:11
Impressive circumnavigation remembered - Ocean Navigator - Web Exclusives 2016Hewitt Schlereth18 Aug 2020, 15:02
Re: Who needs a compass? Who needs a sextant?Hewitt Schlereth19 Aug 2020, 18:44
Re: Digital wrist watch with specific capabilitiesHewitt Schlereth14 Nov 2020, 23:53
Re: Dutch Nautical Atlas/Almanac 1584Huub Robroek5 Apr 2020, 13:34
Re: 1583 Dutch Almanac and cross staffHuub Robroek10 Apr 2020, 09:35
Re: Why Can't My GNSS Receiver See Galileo?Ian Vaughn19 Jan 2020, 21:43
Re: Unusual SunIgor S.1 Jan 2020, 22:30
Yellow page in NAIgor S.13 Jan 2020, 09:12
Re: Curve fitting for noon SunIgor S.13 Jan 2020, 17:00
Re: Compass direction from MoonIgor S.16 Jan 2020, 19:44
Re: Hardly ever get an LOP than 20 NM - why?Igor S.17 Jan 2020, 08:56
Re: Wikipedia: (Russian-language) article on Gauss's direct fix calculationsIgor S.24 Jan 2020, 23:45
GPS Anti Spoof based on radio sextant ?Igor S.27 Jan 2020, 16:43
Re: GPS Anti Spoof based on radio sextant ?Igor S.29 Jan 2020, 20:18
Re: GPS Anti Spoof based on radio sextant ?Igor S.29 Jan 2020, 22:22
History & development of HO-249Igor S.2 Feb 2020, 17:18
Re: Russian Tables of Computed Altitude and AzimuthIgor S.5 Feb 2020, 09:36
Re: History & development of HO-249Igor S.5 Feb 2020, 09:42
Re: Is this a real site (celestial... .info)?Igor S.8 Feb 2020, 18:55
AH - sandwich (working concept)Igor S.4 Mar 2020, 23:45
Re: AH - sandwich (working concept)Igor S.6 Mar 2020, 00:00
H.O. 249: rounding HoIgor S.17 Mar 2020, 22:56
Re: Please help to identify a sextantIgor S.19 Mar 2020, 23:35
Re: Sun-Venus distance observationIgor S.27 Mar 2020, 10:58
Re: Sun-Venus distance observationIgor S.29 Mar 2020, 21:33
Re: Sun-Venus distance observationIgor S.29 Mar 2020, 21:56
Re: Venus in daylightIgor S.4 Apr 2020, 21:40
Re: Celestial Navigation licensing examsIgor S.5 May 2020, 19:25
Re: Celestial Navigation licensing examsIgor S.6 May 2020, 19:30
A short explanatory CN videoIgor S.11 May 2020, 23:37
A method for darkening glassIgor S.22 Jul 2020, 08:35
The History of Celestial Navigation (2020)Igor S.27 Jul 2020, 09:14
Re: Celestial Navigation Exercises and Plotting SheetsIgor S.31 Jul 2020, 21:49
CN and my PhD thesisIgor S.22 Aug 2020, 08:48
Re: CN and my PhD thesisIgor S.22 Aug 2020, 22:29
Re: CN and my PhD thesisIgor S.22 Aug 2020, 23:03
AstronawigacjaIgor S.24 Aug 2020, 19:09
Re: Single LOP is enough?Igor S.15 Sep 2020, 21:11
Re: Star globe details and a Russian/Soviet bookIgor S.25 Sep 2020, 08:41
Re: Star globe details and a Russian/Soviet bookIgor S.26 Sep 2020, 21:54
Re: Russian celestial star globeIgor S.27 Sep 2020, 10:13
Re: A strange addition to a sextantJackson McDonald4 Jan 2020, 22:08
Re: Navigate to this islandJackson McDonald19 Mar 2020, 20:15
Re: Maskelyne: Astronomer RoyalJackson McDonald23 Mar 2020, 18:11
Re: Amazon to launch 3000 communication satellitesJackson McDonald31 Jul 2020, 21:05
Who needs a compass? Who needs a sextant?Jackson McDonald18 Aug 2020, 13:07
A68 iceberg on collision path with South Georgia - BBC NewsJackson McDonald4 Nov 2020, 18:24
Re: Kollsman periscopic sextant mountJacob M. Huffman III6 Jan 2020, 00:14
Re: Kollsman periscopic sextant mountJakub Stastny6 Feb 2020, 07:05
Re: Navigate to this islandJames F Campbell19 Mar 2020, 20:20
Re: 2020-04-12: 59 Earth revolutions around the Sun - since the first man orbited the Earth!James F Campbell12 Apr 2020, 19:35
Re: Radio from the middle of nowhereJames F Campbell29 Apr 2020, 20:35
Plot Sheet GeneratorJames F Campbell9 Jul 2020, 18:08
Re: Plot Sheet GeneratorJames F Campbell17 Jul 2020, 19:14
Re: The History of Celestial Navigation (2020)James F Campbell28 Jul 2020, 19:41
Re: The Nautical Mile?James F Campbell31 Oct 2020, 16:22
Re: Arecibo - GoneJames F. Campbell1 Dec 2020, 19:24
Re: Radio from the middle of nowhereJames Hofmann30 Apr 2020, 17:43
GHA of the MoonJames Vrancik1 Oct 2020, 22:00
Re: GHA of the MoonJames Vrancik2 Oct 2020, 21:48
Re: GHA of the MoonJames Vrancik3 Oct 2020, 20:29
ChronographJason Owens2 Mar 2020, 22:41
ChronographsJason Owens4 Mar 2020, 03:37
Re: Kelvin Hughes sounding sextant !Jean-Philippe Planas17 Mar 2020, 17:29
Re: Hardly ever get an LOP than 20 NM - why?Jeremy C17 Jan 2020, 09:34
Re: Hardly ever get an LOP than 20 NM - why?Jeremy C18 Jan 2020, 09:45
Re: Compass CheckJeremy C19 Jan 2020, 10:19
Re: Calculating the time when GHA is equals zero?Jeremy C12 Mar 2020, 08:06
Re: Calculating the time when GHA is equals zero?Jeremy C13 Mar 2020, 12:22
Re: Calculating the time when GHA is equals zero?Jeremy C14 Mar 2020, 04:35
Re: Calculating the time when GHA is equals zero?Jeremy C14 Mar 2020, 10:39
Re: Grand Princess and Plague flagJeremy C18 Mar 2020, 09:08
Re: Grand Princess and Plague flagJeremy C18 Mar 2020, 09:13
Re: NavList HamsJeremy C3 May 2020, 20:18
Re: NavList HamsJeremy C4 May 2020, 02:12
Re: Moon meridian passageJeremy C30 Sep 2020, 18:03
IPhone 10 Compass/SextantJeremy Clark19 Jan 2020, 14:35
Re: F tables - "F-Tafel"Jerry Mason1 Dec 2020, 00:36
Re: Hardly ever get an LOP than 20 NM - why?Jim Hickey17 Jan 2020, 14:16
Re: Question from the FNGJim Hickey27 Oct 2020, 17:40
Re: Navigating in Microsoft Flight SimulatorJim Rives6 Jan 2020, 03:14
Re: Navigating in Microsoft Flight SimulatorJim Rives6 Jan 2020, 15:41
Re: Navigating in Microsoft Flight SimulatorJim Rives6 Jan 2020, 23:39
Re: Navigating in Microsoft Flight SimulatorJim Rives7 Jan 2020, 03:17
Moon’s SDJim Rives7 Jan 2020, 14:02
Re: Moon’s SDJim Rives8 Jan 2020, 03:49
Re: Variation or Declination?Jim Rives8 Jan 2020, 17:01
Re: Moon’s SDJim Rives9 Jan 2020, 21:11
Stellarium, refraction, HPJim Rives9 Jan 2020, 21:25
Re: Stellarium, refraction, HPJim Rives9 Jan 2020, 23:24
Re: Stellarium, refraction, HPJim Rives11 Jan 2020, 01:20
Re: Stellarium, refraction, HPJim Rives11 Jan 2020, 18:08
Re: Stellarium, refraction, HPJim Rives12 Jan 2020, 14:11
Re: Stellarium, refraction, HPJim Rives13 Jan 2020, 01:09
Re: Stellarium, refraction, HPJim Rives13 Jan 2020, 04:08
Re: Stellarium, refraction, HPJim Rives13 Jan 2020, 04:45
Re: Stellarium, refraction, HPJim Rives14 Jan 2020, 01:00
Re: Stellarium, refraction, HPJim Rives14 Jan 2020, 02:54
Re: Stellarium, refraction, HPJim Rives15 Jan 2020, 00:03
Re: Stellarium, refraction, HP ---- YES!Jim Rives15 Jan 2020, 00:18
Re: Stellarium, refraction, HP ---- YES!Jim Rives15 Jan 2020, 01:45
Re: Stellarium, refraction, HP ---- YES!Jim Rives15 Jan 2020, 04:02
Re: Stellarium, refraction, HPJim Rives15 Jan 2020, 17:40
Lunar 17Jan20 Interpretation of ResultsJim Rives19 Jan 2020, 13:08
Mars Occultation Feb 18 2020Jim Rives19 Jan 2020, 14:42
Re: No DR position. How can you get an accurate celestial fix?Jim Rives19 Jan 2020, 17:30
Re: Satellite collision over northeast USJim Rives30 Jan 2020, 02:59
Moon Venus Lunar - Interpretation of resultsJim Rives30 Jan 2020, 16:49
Anti-spoof testing my sextantJim Rives30 Jan 2020, 17:00
Re: Moon Venus Lunar - Interpretation of resultsJim Rives31 Jan 2020, 02:59
Re: Anti-spoof testing my sextantJim Rives31 Jan 2020, 03:06
Re: Moon Venus Lunar - Interpretation of resultsJim Rives1 Feb 2020, 01:09
Re: Moon Venus Lunar - Interpretation of resultsJim Rives1 Feb 2020, 01:38
Re: Moon Venus Lunar - Interpretation of resultsJim Rives1 Feb 2020, 01:46
Re: Moon Venus Lunar - Interpretation of resultsJim Rives2 Feb 2020, 22:26
Re: Moon Venus Lunar - Interpretation of resultsJim Rives3 Feb 2020, 21:19
Re: Moon Venus Lunar - Interpretation of resultsJim Rives3 Feb 2020, 21:54
Re: Anti-spoof appJim Rives11 Apr 2020, 03:09
Re: Anti-spoof appJim Rives12 Apr 2020, 01:45
Re: Radio from the middle of nowhereJim Rives29 Apr 2020, 17:42
Re: Curious star chartsJim Rives17 Nov 2020, 18:10
Index Error - Comparison to SD per Nautical AlmanacJim Rives23 Nov 2020, 14:01
Re: Index Error - Comparison to SD per Nautical AlmanacJim Rives24 Nov 2020, 20:37
Re: Index Error - Comparison to SD per Nautical AlmanacJim Rives26 Nov 2020, 13:40
Re: Index Error - Comparison to SD per Nautical AlmanacJim Rives26 Nov 2020, 13:48
Re: Index Error - Comparison to SD per Nautical AlmanacJim Rives26 Nov 2020, 13:53
Re: Index Error - Comparison to SD per Nautical AlmanacJim Rives27 Nov 2020, 15:31
Re: Christmas week QuizzesJim Vrancik26 Dec 2020, 14:23
Re: Christmas week QuizzesJim Vrancik28 Dec 2020, 14:47
Re: Azimuth diagram of Hanno IxJim Williams28 Sep 2020, 04:36
Re: Navigating in Microsoft Flight SimulatorJoe Suligoy6 Jan 2020, 17:49
Re: Navigating in Microsoft Flight SimulatorJoe Suligoy7 Jan 2020, 04:01
Re: Variation or Declination?Joe Suligoy8 Jan 2020, 04:44
Re: Stellarium, refraction, HPJoe Suligoy10 Jan 2020, 23:51
Re: Stellarium, refraction, HP ---- YES!Joe Suligoy15 Jan 2020, 03:20
Re: Radio from the middle of nowhereJohn Carbone29 Apr 2020, 18:34
Re: Navigator's Slide RuleJohn Carbone12 Jul 2020, 16:11
Celestial navigation resurgence (Yachting World)John Carbone8 Oct 2020, 12:17
Sailing to CapeTown from the Falklands in winter - July-August 2020John Carbone27 Dec 2020, 19:53
Re: Units in NavigationJohn Clements26 Sep 2020, 20:01
Re: Free Webinar on 17th & 18th Century Marine NavigationJohn Clements9 Oct 2020, 21:37
Re: Clear side of horizon mirrors has reflecting properties.John Clements16 Oct 2020, 05:51
Re: Question from the FNGJohn Clements27 Oct 2020, 17:49
Re: Latitude by Alnair : two degrees meridian altitudeJohn Clements2 Dec 2020, 03:49
Re: Zenith distance and Ho question.John Clements20 Dec 2020, 03:58
Re: Obscure Nautical Almanac starJohn Clements29 Dec 2020, 21:01
Re: New Year's EveJohn D. Howard1 Jan 2020, 03:42
Re: How high is "Angels One Five"?John D. Howard3 Jan 2020, 03:25
Re: Position bias from UTCJohn D. Howard8 Jan 2020, 02:52
Re: Curve fitting for noon SunJohn D. Howard13 Jan 2020, 01:35
Re: Hardly ever get an LOP than 20 NM - why?John D. Howard18 Jan 2020, 16:08
Re: No DR position. How can you get an accurate celestial fix?John D. Howard19 Jan 2020, 17:41
Re: No DR position. How can you get an accurate celestial fix?John D. Howard19 Jan 2020, 17:47
Re: Captain Cook & celestial navigationJohn D. Howard31 Jan 2020, 18:35
Re: Scale of InterceptJohn D. Howard1 Feb 2020, 17:55
Re: Scale of InterceptJohn D. Howard2 Feb 2020, 01:25
Re: Two Bodies + Angle Between Them = Third LoPJohn D. Howard17 Feb 2020, 19:33
Re: Today's sub-Sun pointJohn D. Howard3 Mar 2020, 13:11
Single LOP is enough?John Deen15 Sep 2020, 12:47
Re: Single LOP is enough?John Deen16 Sep 2020, 08:48
My sextant repairJohn Fosh17 Jun 2020, 16:06
Re: Flight 19 lost, 75 years ago todayJohn Matter24 Dec 2020, 18:01
Re: Battenberg manualsJohn Niven7 Oct 2020, 19:01
Re: Battenberg manualsJohn Niven9 Oct 2020, 11:09
Re: Non-graphical way to solve a wind triangleJoseph Rheubeck11 May 2020, 16:36
Backstaff washed up on the beachJosh Paterson18 Jul 2020, 04:55
Re: 1583 Dutch Almanac and cross staffJürgen Hoefeld9 Apr 2020, 19:49
Re: Hyatt's Celestial CoordinatorJürgen Hoefeld26 Apr 2020, 20:30
Re: Ball Drop SextantJürgen Hoefeld23 Jun 2020, 19:46
Re: Voyages of the Astrolabe, 1826-29 and 1837-40Jürgen Hoefeld20 Sep 2020, 07:12
Re: Smithsonian Collection of Aircraft SextantsJürgen Hoefeld19 Oct 2020, 07:38
MK2A periscope sextantK McGrath22 Dec 2020, 22:27
Re: MK2A periscope sextantK McGrath23 Dec 2020, 18:33
Re: MK2A periscope sextantK McGrath23 Dec 2020, 23:35
Re: MK2A periscope sextantK McGrath25 Dec 2020, 15:12
Re: MK2A periscope sextantK McGrath30 Dec 2020, 14:18
Re: Kollsman periscopic sextant mountKen Gebhart6 Jan 2020, 15:36
Re: Looking for Aviation sextant to buy - prefer periscopic pendulum design.Ken Gebhart12 Jul 2020, 18:05
Re: Davis sextant plasticKen Gebhart11 Dec 2020, 19:24
Re: Is this a real site (celestial... .info)?Ken Gebhart Jr.10 Feb 2020, 00:48
Re: Flight 19 routeKevin MacKenzie30 Sep 2020, 19:59
Re: Flight 19 routeKevin MacKenzie5 Oct 2020, 16:54
Re: Radio from the middle of nowhereLars Bergman29 Apr 2020, 19:10
Re: Smart and Shearme Position Line TablesLars Bergman3 May 2020, 16:22
Re: Smart and Shearme Position Line TablesLars Bergman4 May 2020, 09:43
Re: Smart and Shearme Position Line TablesLars Bergman4 May 2020, 19:36
Re: Smart and Shearme Position Line TablesLars Bergman4 May 2020, 20:50
Re: Smart and Shearme Position Line TablesLars Bergman5 May 2020, 18:05
Re: Smart and Shearme Position Line TablesLars Bergman5 May 2020, 18:13
Re: Smart and Shearme Position Line TablesLars Bergman5 May 2020, 18:59
Re: Position from altitude and azimuth.Lars Bergman8 May 2020, 20:16
Re: Position from altitude and azimuth.Lars Bergman9 May 2020, 10:07
Re: Position from altitude and azimuth.Lars Bergman9 May 2020, 21:35
Re: Position from altitude and azimuth.Lars Bergman9 May 2020, 21:40
Re: Position from altitude and azimuth.Lars Bergman12 May 2020, 11:56
Re: Time and placeLars Bergman28 May 2020, 19:04
Re: Time and placeLars Bergman29 May 2020, 08:03
Re: Time and placeLars Bergman23 Jun 2020, 14:39
Re: Time and placeLars Bergman24 Jun 2020, 08:40
Burton's Nautical TablesLars Bergman2 Jul 2020, 20:16
Re: Longitude by unequal altitudes - BrentLars Bergman6 Jul 2020, 09:42
Re: Longitude by unequal altitudes - BrentLars Bergman7 Jul 2020, 15:08
Re: Crelle's tablesLars Bergman27 Sep 2020, 19:50
Re: Haversines with LogarithmsLars Bergman11 Oct 2020, 14:40
Re: Crelle's tablesLars Bergman17 Oct 2020, 09:11
Re: Simultaneous near limb - far limb lunarsLars Bergman27 Oct 2020, 18:24
Re: The Nautical Mile?Lars Bergman31 Oct 2020, 15:40
Re: The Nautical Mile?Lars Bergman1 Nov 2020, 15:00
Re: Lecky's mistakeLars Bergman1 Nov 2020, 15:49
Re: Index Error - Comparison to SD per Nautical AlmanacLars Bergman23 Nov 2020, 14:54
Re: South Pole CelestialLars Bergman25 Nov 2020, 21:19
Re: Index Error - Comparison to SD per Nautical AlmanacLars Bergman25 Nov 2020, 22:04
Hardly ever get an LOP than 20 NM - why?Laurence HOlden17 Jan 2020, 03:42
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden18 Jan 2020, 02:48
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden18 Jan 2020, 03:07
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden18 Jan 2020, 03:14
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden18 Jan 2020, 03:17
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden18 Jan 2020, 23:21
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden18 Jan 2020, 23:30
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden18 Jan 2020, 23:45
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden19 Jan 2020, 02:45
Re: Hardly ever get an LOP than 20 NM - why?Laurence Holden19 Jan 2020, 07:03
Re: Grand Princess and Plague flagLu Abel17 Mar 2020, 18:47
Re: Timex Iron Man Watch=kaputLu Abel2 Jul 2020, 15:43
Re: Timex Iron Man Watch=kaputLu Abel2 Jul 2020, 19:38
Re: Timex Iron Man Watch=kaputLu Abel3 Jul 2020, 03:06
Re: Mystery Navy DeviceLuc Van den Borre11 Jan 2020, 23:15
Bobby Schenk's Golden SextantLuc Van den Borre3 Aug 2020, 14:40
Re: New Soviet era sextant SNO-TLuc Van den Borre15 Sep 2020, 07:59
Re: Curious sextant add-onLuc Van den Borre21 Oct 2020, 18:41
Re: Where are we NavigatorLuc Van den Borre7 Nov 2020, 01:02
Re: Kollsman periscopic sextant mountLudwig Schweinfurth31 Aug 2020, 22:53
Re: Kollsman periscopic sextant mountLudwig Schweinfurth21 Sep 2020, 01:05
Re: Sunderlands and marine sextantsMaarten F23 Dec 2020, 18:43
Sextant handle electric system, out of serviceManuel Acosta17 Jun 2020, 22:51
Re: Sextant handle electric system, out of serviceManuel Acosta19 Jun 2020, 04:02
Re: Online Workshop: Lunars, May 14-16Manuel Cruz19 Apr 2020, 22:20
Re: NavList HamsManuel Cruz2 May 2020, 18:27
Re: Radio from the middle of nowhereMarcel Tschudin3 May 2020, 19:23
New Soviet era sextant SNO-TMarkku Kalima14 Sep 2020, 19:59
Re: New Soviet era sextant SNO-TMarkku Kalima15 Sep 2020, 19:40
Re: New Soviet era sextant SNO-TMarkku Kalima16 Sep 2020, 18:59
Re: New Soviet era sextant SNO-TMarkku Kalima19 Sep 2020, 10:43
Russian celestial star globeMarkku Kalima19 Sep 2020, 10:58
Re: Russian celestial star globeMarkku Kalima27 Sep 2020, 06:10
Stellarium Star Filtering.?Marty Lyons7 Apr 2020, 14:00
Re: AH Level?Marty Lyons8 Aug 2020, 02:37
Re: Experience with an artifical horizonMarty Lyons15 Oct 2020, 23:00
Re: Different (?) vernierMarty Lyons22 Dec 2020, 17:01
Re: Different (?) vernierMarty Lyons22 Dec 2020, 17:07
Haversines with LogarithmsMatthew Gianelloni10 Oct 2020, 16:15
Re: Haversines with LogarithmsMatthew Gianelloni11 Oct 2020, 11:46
Re: Haversines with LogarithmsMatthew Gianelloni11 Oct 2020, 12:14
Re: Haversines with LogarithmsMatthew Gianelloni11 Oct 2020, 16:14
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 01:10
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 01:17
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 10:56
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 11:44
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 14:13
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 14:36
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 18:13
Re: Haversines with LogarithmsMatthew Gianelloni12 Oct 2020, 23:51
Re: Haversines with LogarithmsMatthew Gianelloni13 Oct 2020, 11:26
Re: Haversines with LogarithmsMatthew Gianelloni13 Oct 2020, 12:05
Re: Haversines with LogarithmsMatthew Gianelloni13 Oct 2020, 18:22
Re: Experience with an artifical horizonMatthew Gianelloni14 Oct 2020, 11:24
Re: Experience with an artifical horizonMatthew Gianelloni14 Oct 2020, 11:32
Re: Haversines with LogarithmsMatthew Gianelloni14 Oct 2020, 19:31
Re: Haversines with LogarithmsMatthew Gianelloni15 Oct 2020, 10:31
Re: Haversines with LogarithmsMatthew Gianelloni16 Oct 2020, 11:10
Re: Haversines with LogarithmsMatthew Gianelloni17 Oct 2020, 18:25
Question from the FNGMatthew Gianelloni27 Oct 2020, 13:43
Re: Question from the FNGMatthew Gianelloni28 Oct 2020, 00:18
Re: Jupiter-Moon Lunar from a photoMehmet Guzey23 Dec 2020, 19:10
Re: Jupiter-Moon Lunar from a photoMehmet Guzey23 Dec 2020, 19:57
Re: Jupiter-Moon Lunar from a photoMehmet Guzey24 Dec 2020, 18:52
Re: Kelvin Hughes sounding sextant !Michael Bradley11 Mar 2020, 23:37
Re: Kelvin Hughes sounding sextant !Michael Bradley12 Mar 2020, 12:04
Lockdown Escape (Madness?)Michael Bradley27 Apr 2020, 08:53
Re: Lockdown Escape (Madness?)Michael Bradley27 Apr 2020, 13:34
Re: Lockdown Escape (Madness?)Michael Bradley27 Apr 2020, 17:44
Re: Lockdown Escape (Madness?)Michael Bradley29 Apr 2020, 10:20
Re: Celestial Navigation in the British Royal NavyMichael Bradley4 May 2020, 14:22
Re: Hav-Doniol re-visitedMichael Bradley4 May 2020, 22:18
Re: Sestrel sextant thoughts?Michael Bradley23 May 2020, 09:16
Re: M.F. Maury and the progress of historyMichael Bradley15 Jul 2020, 06:23
Re: Average altitude of a celestial sightMichael Bradley17 Aug 2020, 08:19
Hadley Cell AnecdoteMichael Bradley19 Aug 2020, 12:39
Re: GHA of the MoonMichael Bradley4 Oct 2020, 12:01
Re: Battenberg manualsMichael Bradley8 Oct 2020, 14:23
Re: Curious sextant add-onMichael Bradley22 Oct 2020, 18:39
Help Please - paper by Griffiths? on all haversine methodsMichael Bradley26 Dec 2020, 09:20
Re: Help Please - paper by Griffiths? on all haversine methodsMichael Bradley27 Dec 2020, 10:36
Re: Help Please - paper by Griffiths? on all haversine methodsMichael Bradley29 Dec 2020, 21:54
Re: Yellow page in NAMichael Cain13 Jan 2020, 15:53
Re: Katherine JohnsonMichael Cain27 Feb 2020, 21:39
Final posting: Ron Peel, DFCMichael Cain28 Feb 2020, 21:20
Re: ChronographMichael Cain4 Mar 2020, 16:25
Re: False horizon under the Moon, under the Sun too?Michael Cain20 Apr 2020, 23:17
Re: Celestial Navigation in the British Royal NavyMichael Cain5 May 2020, 21:23
Re: Celestial Navigation Exercises and Plotting SheetsMichael Cain31 Jul 2020, 23:34
Re: The Great ConjunctionMichael Cain22 Dec 2020, 20:05
Re: Kollsman periscopic sextant mountMichael Jones15 Feb 2020, 19:08
Re: H.O. 249: rounding HoMichael Jones20 Mar 2020, 04:26
A12 vs A8-A sextantsMichael Jones22 Mar 2020, 13:51
Re: A12 vs A8-A sextantsMichael Jones22 Mar 2020, 21:06
Re: A12 vs A8-A sextantsMichael Jones23 Mar 2020, 19:33
Bagnold Sun CompassMichael Jones31 Mar 2020, 04:00
Re: Radio from the middle of nowhereMichael Jones29 Apr 2020, 20:25
Re: Celestial in the thin air!Michael Jones5 Jun 2020, 14:57
Re: Celestial in the thin air!Michael Jones5 Jun 2020, 15:03
Bausch and Lomb 5854 sextantMichael Nolan5 Apr 2020, 12:00
Re: No DR position. How can you get an accurate celestial fix?Mike Burkes25 Jan 2020, 16:01
Re: A strange set of Venus LoPs.Mike Burkes6 Apr 2020, 23:26
Re: Ex-Meridian Sight using InmansMike Burkes24 Jun 2020, 19:39
Re: Latitude by Alnair : two degrees meridian altitudeMike Burkes6 Dec 2020, 19:08
Re: Christmas week QuizzesMike Burkes28 Dec 2020, 02:18
The Nautical Mile?Mike Freeman30 Oct 2020, 07:59
Re: The Nautical Mile?Mike Freeman31 Oct 2020, 18:25
Re: The Nautical Mile?Mike Freeman2 Nov 2020, 07:08
Re: Historic US chart & map collectionsMike Mayer17 Jan 2020, 15:29
Re: A-8A Aircraft SextantMike Prokop13 Jun 2020, 01:15
Problem with Frank Reed updated online almanacModris Fersters10 Sep 2020, 13:00
Experience with an artifical horizonModris Fersters13 Oct 2020, 18:51
Problem: index correction by starModris Fersters15 Oct 2020, 18:23
Re: Problem: index correction by starModris Fersters16 Oct 2020, 05:49
Re: Index Error - Comparison to SD per Nautical AlmanacModris Fersters25 Nov 2020, 20:39
Re: Index Error - Comparison to SD per Nautical AlmanacModris Fersters26 Nov 2020, 19:06
Latitude by two star altitudes using 19.century BowditchModris Fersters14 Dec 2020, 02:48
Re: Jupiter-Moon Lunar from a photoModris Fersters20 Dec 2020, 17:14
Re: Jupiter-Moon Lunar from a photoModris Fersters20 Dec 2020, 21:01
Re: Jupiter-Moon Lunar from a photoModris Fersters24 Dec 2020, 10:15
Re: Jupiter-Moon Lunar from a photoModris Fersters25 Dec 2020, 19:07
Re: Christmas week QuizzesModris Fersters27 Dec 2020, 17:14
Re: Christmas week QuizzesModris Fersters29 Dec 2020, 11:56
Re: Sextant certificate with a graphMurray Buckman17 Aug 2020, 18:03
Re: Navigator's Slide RuleMurray Buckman19 Aug 2020, 01:27
Re: Navigator's Slide RuleMurray Buckman19 Aug 2020, 19:15
Re: Who's that hiding behind Jupiter?Murray Buckman20 Aug 2020, 22:34
Re: What time is it?Murray Buckman23 Aug 2020, 16:45
Re: Hughes & Son's Sextant - General InfoMurray Buckman26 Aug 2020, 18:03
Re: Hezzanith SextantMurray Buckman7 Sep 2020, 23:42
Re: Hezzanith SextantMurray Buckman8 Sep 2020, 02:44
Re: Towson's tables?Murray Buckman19 Sep 2020, 17:50
Re: Distance by Vertical AngleMurray Buckman7 Oct 2020, 18:18
Re: Haversines with LogarithmsMurray Buckman13 Oct 2020, 00:28
Re: Navigation stars and a SpaceX MockshipMurray Buckman22 Oct 2020, 01:20
Re: Navigation stars and a SpaceX MockshipMurray Buckman22 Oct 2020, 18:55
Re: Cloudy Weather Johnson's Double Chronometer MethodMurray Buckman2 Nov 2020, 16:50
Re: Cloudy Weather Johnson's Double Chronometer MethodMurray Buckman2 Nov 2020, 21:49
Re: Cloudy Weather Johnson's Double Chronometer MethodMurray Buckman3 Nov 2020, 02:17
Re: Where are we NavigatorMurray Buckman6 Nov 2020, 22:19
Re: Where are we NavigatorMurray Buckman6 Nov 2020, 22:42
Re: Curious star chartsMurray Buckman17 Nov 2020, 22:23
Re: The Great ConjunctionMurray Buckman22 Dec 2020, 23:51
Navigator's Slide RuleMurray Felstead10 Jul 2020, 05:47
Re: Bob Goethe's Mark 2 Navigators slide rule, test drive comparisons.Murray Felstead7 Aug 2020, 11:45
Re: Moon’s SDMurray Peake7 Jan 2020, 17:09
Re: Weems Star Altitude CurvesMurray Peake5 Feb 2020, 17:39
Re: Weems Star Altitude CurvesMurray Peake6 Feb 2020, 19:43
Re: Weems Star Altitude CurvesMurray Peake6 Feb 2020, 20:17
Re: Weems Star Altitude CurvesMurray Peake6 Feb 2020, 21:05
Re: Weems Star Altitude CurvesMurray Peake6 Feb 2020, 22:28
Re: Weems Star Altitude CurvesMurray Peake7 Feb 2020, 08:54
Re: Weems Star Altitude CurvesMurray Peake8 Feb 2020, 08:52
Re: Weems Star Altitude CurvesMurray Peake8 Feb 2020, 09:09
Re: Lecky's mistakeMurray Peake31 Oct 2020, 09:40
Sestrel sextant thoughts?Ned Lloyd23 May 2020, 03:28
Re: Sestrel sextant thoughts?Ned Lloyd23 May 2020, 18:40
Janet Taylor octantNed Lloyd23 May 2020, 19:30
Re: Sestrel sextant thoughts?Ned Lloyd24 May 2020, 01:51
Re: Janet Taylor octantNed Lloyd24 May 2020, 13:23
Re: Dating Hughes and Son sextantsNiall Fitzpatrick3 Jan 2020, 09:24
Re: Hardly ever get an LOP than 20 NM - why?Nick M18 Jan 2020, 17:33
Re: Hardly ever get an LOP than 20 NM - why?Nick M18 Jan 2020, 18:46
Re: Hardly ever get an LOP than 20 NM - why?Nick M19 Jan 2020, 02:03
Re: ChronographNick M4 Mar 2020, 13:46
Re: Meridian transit adaptationNick M14 Nov 2020, 22:53
Re: V correction and the sunNick M16 Dec 2020, 00:38
Re: More sunlight in Greenland than in the AmazonNick M24 Dec 2020, 14:21
AH Level?Noell Wilson7 Aug 2020, 20:42
Re: AH Level?Noell Wilson8 Aug 2020, 14:35
Arrgh!Noell Wilson19 Sep 2020, 12:56
Re: Units in NavigationNoell Wilson24 Sep 2020, 17:13
C. 1900 mercury AHNoell Wilson5 Dec 2020, 14:28
Re: C. 1900 mercury AHNoell Wilson6 Dec 2020, 12:39
Different (?) vernierNoell Wilson18 Dec 2020, 13:02
Re: Different (?) vernierNoell Wilson20 Dec 2020, 13:10
Re: Different (?) vernierNoell Wilson25 Dec 2020, 12:50
Re: Casio fx-300ES Plus (2nd Edition)Ofer Bar Gil14 Nov 2020, 19:42
Re: Butterfly Bris PrototypePatrick Pont6 Dec 2020, 22:06
Re: Sextant RepairsPatrick Pont13 Dec 2020, 13:05
Navigation TablesPaul Bedel9 Aug 2020, 14:46
Re: Navigation TablesPaul Bedel10 Aug 2020, 08:32
Re: Longitude at noonPaul Bedel10 Sep 2020, 15:09
Re: Towson's tables?Paul Bedel19 Sep 2020, 14:49
Re: Towson's tables?Paul Bedel20 Sep 2020, 14:04
Re: Cloudy Weather Johnson's Double Chronometer MethodPaul Bedel3 Nov 2020, 10:52
Re: Pilot watch slide rulesPaul Dolkas3 Jan 2020, 02:34
Re: Radium Infused Bubble SextantPaul Dolkas3 Jan 2020, 04:36
Re: Hybrid artificial horizonPaul Dolkas29 Jul 2020, 03:24
Re: I'm forever blowing (sextant) bubblesPaul Dolkas25 Nov 2020, 03:27
Re: I'm forever blowing (sextant) bubblesPaul Dolkas25 Nov 2020, 17:38
Re: Pilot watch slide rulesPaul Hirose3 Jan 2020, 07:50
Re: Position bias from UTCPaul Hirose7 Jan 2020, 21:46
Re: Position bias from UTCPaul Hirose9 Jan 2020, 06:22
Re: Stellarium, refraction, HPPaul Hirose14 Jan 2020, 19:31
Historic US chart & map collectionsPaul Hirose16 Jan 2020, 21:03
Fwd: Journal of,Astronomical History and Heritage December 2019Paul Hirose22 Jan 2020, 05:18
Arthur Rostron's sextantPaul Hirose31 Jan 2020, 22:15
Re: Moon Venus Lunar - Interpretation of resultsPaul Hirose1 Feb 2020, 23:54
Re: Moon Venus Lunar - Interpretation of resultsPaul Hirose3 Feb 2020, 19:00
Re: Is this a real site (celestial... .info)?Paul Hirose8 Feb 2020, 19:47
Re: Moon Venus Lunar - Interpretation of resultsPaul Hirose12 Feb 2020, 06:11
Lunar distance parallactic retardationPaul Hirose14 Feb 2020, 21:24
Longitudes greater than 180Paul Hirose3 Mar 2020, 22:07
Re: Using the sun's direct and reflected image to determine a sextant's IEPaul Hirose10 Mar 2020, 06:03
Re: Kelvin Hughes sounding sextant !Paul Hirose13 Mar 2020, 21:36
Index error vs. index correctionPaul Hirose13 Mar 2020, 21:38
Re: Calculating the time when GHA is equals zero?Paul Hirose14 Mar 2020, 20:21
Re: H.O. 249: rounding HoPaul Hirose20 Mar 2020, 18:43
Re: A12 vs A8-A sextantsPaul Hirose27 Apr 2020, 17:21
Re: Height CorrectionPaul Hirose8 May 2020, 20:49
Re: Lunar distance parallactic retardationPaul Hirose20 May 2020, 05:20
Lunar distance method of ChauvenetPaul Hirose26 May 2020, 04:59
Re: Lunar distance method of ChauvenetPaul Hirose26 May 2020, 19:07
Re: Parallax in azimuthPaul Hirose29 May 2020, 19:20
Re: Celestaire Astra IIIB backlashPaul Hirose15 Jun 2020, 19:48
Re: Polaris' PM in RA?Paul Hirose24 Sep 2020, 21:02
Re: The Nautical Mile?Paul Hirose1 Nov 2020, 05:07
Re: Radians and DegreesPaul Hirose1 Nov 2020, 22:05
Sky & Telescope Magazine article on Capt. Cook's AstronomyPaul Saffo26 Jan 2020, 06:28
Re: Today's sub-Sun pointPaul Saffo2 Mar 2020, 17:54
Grand Princess and Plague flagPaul Saffo17 Mar 2020, 04:45
Re: Radio from the middle of nowherePaul Saffo3 May 2020, 14:00
Re: Radio from the middle of nowherePaul Saffo3 May 2020, 19:41
Re: Radio from the middle of nowherePaul Saffo4 May 2020, 18:10
Re: Latitude by photoPaul Saffo8 Aug 2020, 06:10
Re: Latitude by photoPaul Saffo8 Aug 2020, 18:11
Re: Latitude by photoPaul Saffo9 Aug 2020, 00:03
Re: Navigator's Slide RulePaul Saffo18 Aug 2020, 07:25
Big Dipper and calculator historyPaul Saffo6 Dec 2020, 02:42
Re: Big Dipper and calculator historyPaul Saffo6 Dec 2020, 04:47
Re: Big Dipper and calculator historyPaul Saffo6 Dec 2020, 11:28
Re: Big Dipper and calculator historyPaul Saffo7 Dec 2020, 20:05
Re: Saturn and Jupiter: one degree separationPaul Saffo12 Dec 2020, 01:55
New Scientist: GPS mystery is making ships appear to teleport and move in circlesPaul Saffo12 Dec 2020, 22:48
Re: New Scientist: GPS mystery is making ships appear to teleport and move in circlesPaul Saffo13 Dec 2020, 03:14
Sextant problem gonePaul Werner31 Mar 2020, 12:09
Digital wrist watch with specific capabilitiesPedro Redondo13 Nov 2020, 13:30
Re: Digital wrist watch with specific capabilitiesPedro Redondo17 Nov 2020, 16:35
Re: Digital wrist watch with specific capabilitiesPedro Redondo17 Nov 2020, 16:36
Re: No DR position. How can you get an accurate celestial fix?Peter Hakel25 Jan 2020, 03:39
Re: Venus mer-pass for Lat, Sun time sight for Lon.Peter Hakel12 Apr 2020, 02:04
Re: Position from altitude and azimuth.Peter Hakel8 May 2020, 04:16
Re: Position from altitude and azimuth.Peter Hakel10 May 2020, 23:26
Re: Position from altitude and azimuth.Peter Hakel12 May 2020, 00:21
Re: Position from altitude and azimuth.Peter Hakel13 May 2020, 00:19
Re: Position from two azimuthsPeter Hakel16 May 2020, 07:51
Re: Position from two azimuthsPeter Hakel16 May 2020, 21:15
Re: E.O.T. for 2020Peter Hakel1 Jun 2020, 02:31
Re: Kollsman periscopic sextant mountPeter Hakel22 Sep 2020, 00:05
Re: Kollsman periscopic sextant mountPeter Hakel23 Sep 2020, 13:37
Re: GHA of the MoonPeter Hakel4 Oct 2020, 05:01
Re: Crelle's tablesPeter Hakel17 Oct 2020, 20:16
Re: Latitude by Alnair : two degrees meridian altitudePeter Hakel1 Dec 2020, 23:52
Navigation Spreadsheets in 2021Peter Hakel13 Dec 2020, 19:44
Re: The Great ConjunctionPeter Hakel23 Dec 2020, 00:32
Re: Celestial navigation: easier basic principle?Peter Monta26 Jan 2020, 07:44
Re: Celestial navigation: easier basic principle?Peter Monta27 Jan 2020, 02:59
Re: Royal Museums Greenwich closedPeter Monta17 Mar 2020, 23:40
Re: Please help to identify a sextantPeter Monta21 Mar 2020, 23:25
Re: Venus in daylightPeter Monta4 Apr 2020, 03:40
Re: WWV is audible again (here)Peter Monta24 Apr 2020, 20:34
Re: Radio from the middle of nowherePeter Monta1 May 2020, 23:40
Re: Davis Mk 25 prismatic monocular upgradePeter Monta18 May 2020, 18:54
Re: Parallax in azimuthPeter Monta25 May 2020, 08:13
Re: Mark III plastic sextantPeter Monta7 Jun 2020, 00:44
Re: Free webinar GNSS SupercorrelationPeter Monta11 Jun 2020, 02:40
Re: Celestaire Astra IIIB backlashPeter Monta14 Jun 2020, 21:23
Re: Comedy on the Greenwich MeridianPeter Monta16 Jun 2020, 04:40
Re: Sextant Collimation ErrorPeter Monta26 Jun 2020, 03:35
Re: Sextant Collimation ErrorPeter Monta28 Jun 2020, 02:36
Hybrid artificial horizonPeter Monta19 Jul 2020, 18:43
Re: Hybrid artificial horizonPeter Monta24 Jul 2020, 19:07
Re: Hybrid artificial horizonPeter Monta25 Jul 2020, 17:48
Re: Hybrid artificial horizonPeter Monta25 Jul 2020, 17:59
Re: Hybrid artificial horizonPeter Monta26 Jul 2020, 18:40
Re: Hybrid artificial horizonPeter Monta27 Jul 2020, 02:29
Re: AH Level?Peter Monta12 Aug 2020, 05:21
Re: Navigator's Slide RulePeter Monta18 Aug 2020, 21:32
Re: Calibrating New 24MP DSLR Canon Rebel for CNPeter Monta20 Aug 2020, 12:03
Re: Calibrating New 24MP DSLR Canon Rebel for CNPeter Monta21 Aug 2020, 20:24
Navigation with Moon imagesPeter Monta24 Aug 2020, 02:33
Re: Navigation with Moon imagesPeter Monta25 Aug 2020, 15:52
Re: Navigation with Moon imagesPeter Monta25 Aug 2020, 16:02
Re: Navigation with Moon imagesPeter Monta25 Aug 2020, 16:15
Re: Navigation with Moon imagesPeter Monta27 Aug 2020, 16:19
Re: Navigation with Moon imagesPeter Monta28 Aug 2020, 14:07
Re: New Soviet era sextant SNO-TPeter Monta17 Sep 2020, 00:37
Re: Curious star chartsPeter Monta19 Nov 2020, 17:53
Re: RAF O6a CompassPeter Smith18 Jul 2020, 14:22
Re: Air Almanac 2020 full pdf now available...Phil F10 Apr 2020, 07:57
Re: A strange addition to a sextantPhilippe Posth5 Jan 2020, 08:52
Re: Is this a real site (celestial... .info)?Philippe Posth9 Feb 2020, 19:07
Sign of d in HO249Philippe Posth22 Apr 2020, 14:20
Re: Sign of d in HO249Philippe Posth23 Apr 2020, 21:36
Longitude at noonPhilippe Posth8 Sep 2020, 19:21
Re: Longitude à midiPhilippe Posth9 Sep 2020, 06:30
Re: Longitude at noonPhilippe Posth9 Sep 2020, 18:56
Digital SextantPhilippe Posth10 Sep 2020, 08:15
Re: Digital SextantPhilippe Posth11 Sep 2020, 12:06
Re: Russian celestial star globePhilippe Posth21 Sep 2020, 18:44
Davis sextant plasticPhilippe Posth11 Dec 2020, 18:16
Kollsman Type 106C U.S. Navy MK IX Aircraft CompassPyndan Wulffe19 May 2020, 05:23
Re: SpaceX Starlink launch: photo celestialR William McAllister12 Jan 2020, 13:37
Cold War Sun HoursR William McAllister13 Jan 2020, 17:59
Re: Some pop culture sextantsR William McAllister17 Jan 2020, 04:25
Re: Celestial navigation: easier basic principle?R William McAllister26 Jan 2020, 12:51
Cold War Hangar Navigating & Tales from On-board ShuttleR William McAllister26 Jan 2020, 18:47
Re: Kollsman periscopic sextant mountR William McAllister9 Feb 2020, 13:04
Re: Finding Longitude from LSTR William McAllister17 Aug 2020, 12:46
Curve fitting for noon SunRafael C. Caruso12 Jan 2020, 16:33
Re: Curve fitting for noon SunRafael C. Caruso13 Jan 2020, 20:32
Re: Yellow page in NARafael C. Caruso13 Jan 2020, 20:58
Re: Curve fitting for noon SunRafael C. Caruso14 Jan 2020, 22:18
Re: Curve fitting for noon SunRafael C. Caruso16 Jan 2020, 00:10
Captain Cook & celestial navigationRafael C. Caruso22 Jan 2020, 16:35
Re: Venus in daylight this monthRafael C. Caruso16 Jul 2020, 23:45
Cosine formula to solve a right spherical triangle?Rajeev Yadav21 Jan 2020, 03:27
Re: US Navy MK II sextant manualRandy Shivak6 Oct 2020, 22:07
Ww2 A-8 octantRich K10 Jun 2020, 17:35
Re: Why Can't My GNSS Receiver See Galileo?Richard B. Langley20 Jan 2020, 13:07
Re: The History of Celestial Navigation (2020)Richard B. Langley29 Jul 2020, 13:37
Re: Air Almanac 2020 full pdf now available...Richard Holmes31 Jul 2020, 16:12
Re: Low Altitude Sun Artificial Horizon ExerciseRichard MacCormac3 Dec 2020, 11:59
Re: Low Altitude Sun Artificial Horizon ExerciseRichard MacCormac3 Dec 2020, 21:01
Re: A strange addition to a sextantRobert Eno7 Jan 2020, 04:55
No DR position. How can you get an accurate celestial fix?Robert Goldberg19 Jan 2020, 15:29
Re: A second Chinese sextant?Robert Goldberg19 Jul 2020, 21:54
Zenith distance and Ho question.Robert Goldberg19 Dec 2020, 14:00
Re: Zenith distance and Ho question.Robert Goldberg19 Dec 2020, 21:43
Re: Zenith distance and Ho question.Robert Goldberg20 Dec 2020, 00:56
Re: Zenith distance and Ho question.Robert Goldberg21 Dec 2020, 21:32
Re: Earliest Crescent Moon VisibilityRobert H. van Gent27 Jan 2020, 16:41
Re: Obscure Nautical Almanac starRobert H. van Gent28 Dec 2020, 17:36
Re: Obscure Nautical Almanac starRobert H. van Gent29 Dec 2020, 11:44
Re: Obscure Nautical Almanac starRobert H. van Gent29 Dec 2020, 16:55
Re: Navigation with Moon imagesRobert Neff24 Aug 2020, 15:57
Re: Who's that hiding behind Jupiter?Robert Neff24 Aug 2020, 16:44
Re: Units in NavigationRobert Neff28 Sep 2020, 15:46
Bausch and Lomb WWII Aircraft SextantsRobert Swartz19 Jan 2020, 20:08
Re: Bausch and Lomb WWII Aircraft SextantsRobert Swartz20 Jan 2020, 18:29
Re: Bausch and Lomb WWII Aircraft SextantsRobert Swartz20 Jan 2020, 18:52
Re: A12 vs A8-A sextantsRobert Swartz25 Mar 2020, 15:44
Bubble SextantsRobert Swartz25 Mar 2020, 18:57
Re: Bubble SextantsRobert Swartz26 Mar 2020, 00:37
Height CorrectionRobert Swartz7 May 2020, 03:19
Re: A-12 ExperiencesRobert Swartz7 May 2020, 04:15
Re: Height CorrectionRobert Swartz7 May 2020, 05:43
Re: Height CorrectionRobert Swartz7 May 2020, 15:33
AN5854-1 Bubble Sextant For SaleRobert Swartz20 May 2020, 16:53
Bausch & Lomb A8-A Sextant For SaleRobert Swartz11 Jul 2020, 03:12
Re: Looking for Aviation sextant to buy - prefer periscopic pendulum design.Robert Swartz12 Jul 2020, 21:10
Info on Bubble SextantsRobert Swartz28 Jul 2020, 03:44
Bausch and Lomb AN5854-1 Reconditioned Aircraft Sextant For SaleRobert Swartz12 Aug 2020, 01:28
Interesting US Navy EquipmentRobert Swartz13 Aug 2020, 02:18
Bausch and Lomb A8-A Reconditioned Bubble Sextant For SaleRobert Swartz15 Aug 2020, 03:04
Re: Bausch and Lomb A8-A Reconditioned Bubble Sextant For SaleRobert Swartz16 Aug 2020, 22:58
Periscopic Sextant Mount Listing--Beware-- UselessRobert Swartz19 Aug 2020, 03:26
Re: Kollsman periscopic sextant and mountRobert Swartz3 Sep 2020, 04:46
Bubble Sextant Electrical BugsRobert Swartz3 Sep 2020, 05:06
Link Sextant Test Collimator Info.Robert Swartz3 Sep 2020, 20:08
Good Book On Air NavigationRobert Swartz4 Sep 2020, 01:23
Latitude by PolarisRobert Swartz13 Sep 2020, 04:29
Re: Latitude by PolarisRobert Swartz14 Sep 2020, 01:48
Reconditioned Bausch and Lomb A8-A Bubble Sextant F.S. DiscountedRobert Swartz4 Oct 2020, 02:05
Re: Experience with an artifical horizonRobert Swartz16 Oct 2020, 03:13
Deborah Warner Article re. Aircraft SextantsRobert Swartz19 Oct 2020, 04:33
Smithsonian Collection of Aircraft SextantsRobert Swartz19 Oct 2020, 04:35
Re: Smithsonian Collection of Aircraft SextantsRobert Swartz19 Oct 2020, 22:46
Astronomy or AstrologyRobert Swartz13 Nov 2020, 04:44
Incomplete Instrument-- WWII German SoldsextantRobert Swartz29 Nov 2020, 22:08
Re: Yellow page in NARobert VanderPol II13 Jan 2020, 17:46
Re: History & development of HO-249Robert VanderPol II3 Feb 2020, 02:51
Re: A-12 ExperiencesRobert VanderPol II10 Feb 2020, 07:04
Re: Sun Slow DayRobert VanderPol II13 Feb 2020, 14:10
Re: Longitudes greater than 180Robert VanderPol II4 Mar 2020, 14:02
Re: Sign of d in HO249Robert VanderPol II25 Apr 2020, 13:05
Re: Radio from the middle of nowhereRobert VanderPol II29 Apr 2020, 18:49
Re: NavList HamsRobert VanderPol II2 May 2020, 16:47
Re: Timex Iron Man Watch=kaputRobert VanderPol II2 Jul 2020, 22:12
One of Hewitt Schlereth's books just got plugged on YouTube.Robert VanderPol II25 Jul 2020, 03:17
Re: Single LOP is enough?Robert VanderPol II16 Sep 2020, 04:37
Re: Question from the FNGRobert VanderPol II28 Oct 2020, 04:37
Re: The Nautical Mile?Robert VanderPol II31 Oct 2020, 00:39
Re: Radians and DegreesRobert VanderPol II31 Oct 2020, 22:34
Re: Martelli Table ProvenanceRobert Wyatt24 Feb 2020, 15:37
Re: Longitude by Lunar OccultationRobin Stuart4 Jan 2020, 16:01
Position bias from UTCRobin Stuart4 Jan 2020, 16:49
Re: Longitude by Lunar OccultationRobin Stuart4 Jan 2020, 21:12
Re: Position bias from UTCRobin Stuart4 Jan 2020, 21:38
Re: Longitude by Lunar OccultationRobin Stuart7 Jan 2020, 17:08
Captain Cook's AstronomyRobin Stuart8 Jan 2020, 17:25
Re: Robin Stuart's paper "Probabilities in a Gaussian Cocked Hat"Robin Stuart16 Jan 2020, 16:19
Re: Percy Lyall Hooker Davis' High Latitude TablesRobin Stuart22 Jan 2020, 15:50
Re: Sky & Telescope Magazine article on Capt. Cook's AstronomyRobin Stuart27 Jan 2020, 14:44
Re: Captain Cook & celestial navigationRobin Stuart29 Jan 2020, 17:52
Re: Captain Cook & celestial navigationRobin Stuart30 Jan 2020, 18:54
Re: Captain Cook & celestial navigationRobin Stuart30 Jan 2020, 21:07
Re: Captain Cook & celestial navigationRobin Stuart2 Feb 2020, 18:26
Re: Captain Cook & celestial navigationRobin Stuart2 Feb 2020, 18:53
Re: Captain Cook & celestial navigationRobin Stuart4 Feb 2020, 15:47
Re: Captain Cook & celestial navigationRobin Stuart13 Mar 2020, 16:29
Re: Index error vs. index correctionRobin Stuart22 Mar 2020, 13:49
Re: Index error vs. index correctionRobin Stuart22 Mar 2020, 20:54
Will anyone ever find Shackleton's lost ship?Robin Stuart22 Apr 2020, 14:04
Re: Buffy, the Moon is wrong...Robin Stuart25 Apr 2020, 12:15
Re: Calculators "old technology"Robin Stuart1 May 2020, 18:16
Re: Smart and Shearme Position Line TablesRobin Stuart3 May 2020, 14:37
Re: Calculators "old technology"Robin Stuart3 May 2020, 15:18
Re: NavList HamsRobin Stuart4 May 2020, 13:39
Re: Smart and Shearme Position Line TablesRobin Stuart5 May 2020, 13:41
Re: Position from altitude and azimuth.Robin Stuart16 May 2020, 13:48
Re: Equal Azimuth LinesRobin Stuart16 May 2020, 14:08
Re: Position from altitude and azimuth.Robin Stuart17 May 2020, 12:17
Re: Position from altitude and azimuth.Robin Stuart21 May 2020, 15:47
Re: Position from altitude and azimuth.Robin Stuart22 May 2020, 18:12
Re: Parallax in azimuthRobin Stuart25 May 2020, 18:48
Re: Parallax in azimuthRobin Stuart28 May 2020, 15:29
Re: Parallax in azimuthRobin Stuart29 May 2020, 20:27
Longitude by Equal AltitudesRobin Stuart28 Jul 2020, 12:25
Re: Hybrid artificial horizonRobin Stuart28 Jul 2020, 12:55
Re: Hybrid artificial horizonRobin Stuart29 Jul 2020, 14:13
Re: Latitude by photoRobin Stuart7 Aug 2020, 17:15
Re: Latitude by PolarisRobin Stuart14 Sep 2020, 14:46
Astronomical Observations of the 1869 Expedition through Grand CanyonRobin Stuart25 Sep 2020, 17:03
Re: Arecibo - GoneRobin Stuart3 Dec 2020, 13:34
Davis Instruments Prism-Level Owner's ManualRoger C Bucholz23 Jan 2020, 01:51
Re: Sky & Telescope Magazine article on Capt. Cook's AstronomyRoger W. Sinnott26 Jan 2020, 20:07
Re: Sky & Telescope Magazine article on Capt. Cook's AstronomyRoger W. Sinnott26 Jan 2020, 23:36
Re: Captain Cook & celestial navigationRoger W. Sinnott13 Mar 2020, 17:56
Re: Calculators "old technology"Roger W. Sinnott30 Apr 2020, 19:09
Re: Lunar distance method of ChauvenetRoger W. Sinnott26 May 2020, 11:37
Re: Polaris' PM in RA?Roger W. Sinnott23 Sep 2020, 18:29
Re: GHA of the MoonRoger W. Sinnott2 Oct 2020, 00:49
Re: Haversines with LogarithmsRoger W. Sinnott17 Oct 2020, 21:22
NPR article on BetelgeuseRommel John Miller4 Jan 2020, 01:48
Re: Towson's tables?Rommel John Miller17 Sep 2020, 23:54
Fwd: Christmas StarRommel John Miller21 Dec 2020, 23:54
Re: No DR position. How can you get an accurate celestial fix?Ron Jones20 Jan 2020, 00:18
Re: E.O.T. for 2020Ron Jones31 May 2020, 18:06
Re: Kollsman periscopic sextant mountRonald van Riet21 Sep 2020, 07:27
Battenberg manualsRonald van Riet7 Oct 2020, 08:35
Re: Battenberg manualsRonald van Riet13 Oct 2020, 10:08
Celestial in the thin air!S. Velasquez5 Jun 2020, 04:34
Re: Celestial in the thin air!S. Velasquez5 Jun 2020, 19:18
Mark III plastic sextantS. Velasquez6 Jun 2020, 21:07
Re: Celestial in the Age of Sail, April 7-9, onlineSam Lyness1 Apr 2020, 01:41
Re: Dating Hughes and Son sextantsSean C4 Jan 2020, 05:45
Why Can't My GNSS Receiver See Galileo?Sean C19 Jan 2020, 11:52
Re: Moon Venus Lunar - Interpretation of resultsSean C31 Jan 2020, 03:36
Re: Moon Venus Lunar - Interpretation of resultsSean C31 Jan 2020, 06:05
Re: Scale of InterceptSean C2 Feb 2020, 07:14
Re: Scale of InterceptSean C2 Feb 2020, 07:19
Re: UsnoSean C20 Feb 2020, 05:27
Re: Venus in daylightSean C29 Mar 2020, 04:40
Re: Minimum geocentric Saturn-Mars apparent angular DistanceSean C1 Apr 2020, 09:04
Re: Lunars: optimal angular distancesSean C2 Apr 2020, 04:48
Re: Minimum geocentric Saturn-Mars apparent angular DistanceSean C2 Apr 2020, 08:13
Re: Minimum geocentric Saturn-Mars apparent angular DistanceSean C3 Apr 2020, 06:56
Re: Star Tracker - Space Shuttle and the Inertial Upper Stage.Sean C5 Apr 2020, 05:16
Re: Stellarium Star Filtering.?Sean C7 Apr 2020, 18:03
Re: UsnoSean C22 Apr 2020, 06:57
Re: Sign of d in HO249Sean C24 Apr 2020, 04:52
Re: Position from altitude and azimuth.Sean C11 May 2020, 06:52
Re: Beginning celestial navigation methodSean C13 May 2020, 04:44
Re: Some pop culture sextantsSean C30 May 2020, 10:31
Re: Sun's GenderSean C21 Jun 2020, 20:41
Re: Navigation Library for sale (K Gebhart)Sean C25 Jun 2020, 07:26
Re: Online Meetings SundaySean C5 Jul 2020, 04:49
Re: Plot Sheet GeneratorSean C9 Jul 2020, 22:08
Re: M.F. Maury and the progress of historySean C14 Jul 2020, 07:47
Re: Sextant practice on the space stationSean C19 Jul 2020, 04:30
Excel AlmanacSean C28 Jul 2020, 03:33
Re: Celestial Navigation Exercises and Plotting SheetsSean C1 Aug 2020, 00:03
Re: Finding Longitude from LSTSean C16 Aug 2020, 22:53
Re: Finding Longitude from LSTSean C18 Aug 2020, 09:28
Re: Determination of the GHA of AriesSean C11 Sep 2020, 07:18
Re: Russian celestial star globeSean C20 Sep 2020, 04:25
Polaris' PM in RA?Sean C23 Sep 2020, 09:57
Re: Polaris' PM in RA?Sean C24 Sep 2020, 14:07
Re: Polaris' PM in RA?Sean C25 Sep 2020, 06:15
Re: GHA of the MoonSean C3 Oct 2020, 04:48
Re: GHA of the MoonSean C5 Oct 2020, 07:48
Radians and DegreesSean C31 Oct 2020, 11:07
Re: Radians and DegreesSean C3 Nov 2020, 05:32
Re: Radians and DegreesSean C3 Nov 2020, 09:59
Re: Radians and DegreesSean C5 Nov 2020, 21:08
Re: Radians and DegreesSean C6 Nov 2020, 05:11
Re: Edward J WillisSean C7 Nov 2020, 06:34
Re: Casio fx-300ES Plus (2nd Edition)Sean C14 Nov 2020, 08:32
Re: Radians and DegreesSean C14 Nov 2020, 08:38
Re: Digital wrist watch with specific capabilitiesSean C15 Nov 2020, 01:42
Testing 1960s Air Nav EquipmentSean C30 Nov 2020, 01:18
Re: More sunlight in Greenland than in the AmazonSean C24 Dec 2020, 06:35
Re: More sunlight in Greenland than in the AmazonSean C25 Dec 2020, 08:45
Re: NavList HamsSean Johnston3 May 2020, 16:31
Re: Navigator's Slide RuleSean Johnston11 Jul 2020, 14:52
Re: Navigator's Slide RuleSean Johnston18 Jul 2020, 14:50
Re: Bob Goethe's Mark 2 Navigators slide rule, test drive comparisons.Sean Johnston18 Jul 2020, 16:09
Re: Navigator's Slide RuleSean Johnston17 Aug 2020, 23:23
Re: Yoder SextantSimon Horwith8 Sep 2020, 16:38
Re: Old navigation books collectionSimon Horwith5 Oct 2020, 22:08
Celestial Navigation Exercises and Plotting SheetsSimon T31 Jul 2020, 12:07
Re: More Cocked HatsSivan Toledo19 Jul 2020, 08:42
Re: What does the Analemma depict?Steve E. Bryant12 Feb 2020, 18:59
Re: Time of Sun & Moon rise and setSteve E. Bryant12 Feb 2020, 19:06
Re: Time of Sun & Moon rise and setSteve E. Bryant12 Feb 2020, 20:13
Re: What does the Analemma depict?Steve E. Bryant12 Feb 2020, 20:46
Re: Today's sub-Sun pointSteve E. Bryant3 Mar 2020, 03:36
Re: Today's sub-Sun pointSteve E. Bryant3 Mar 2020, 19:26
Re: Today's sub-Sun pointSteve E. Bryant4 Mar 2020, 06:29
Calculating the time when GHA is equals zero?Steve E. Bryant9 Mar 2020, 06:14
Re: Calculating the time when GHA is equals zero?Steve E. Bryant11 Mar 2020, 06:23
Re: Calculating the time when GHA is equals zero?Steve E. Bryant13 Mar 2020, 03:20
Re: Calculating the time when GHA is equals zero?Steve E. Bryant14 Mar 2020, 06:18
Re: Calculating the time when GHA is equals zero?Steve E. Bryant14 Mar 2020, 17:45
Re: Calculating the time when GHA is equals zero?Steve E. Bryant21 Mar 2020, 00:15
Lunars: optimal angular distancesSteve E. Bryant31 Mar 2020, 18:55
Re: Sun-Venus distance observationSteve E. Bryant1 Apr 2020, 19:18
Re: Lunars: optimal angular distancesSteve E. Bryant4 Apr 2020, 09:38
Meridian Passage Table, Daily PagesSteve E. Bryant6 Apr 2020, 21:27
Re: NavList-donated Amelia Earhart signSteve E. Bryant8 Apr 2020, 04:57
NavList ResourcesSteve E. Bryant11 Apr 2020, 14:07
Re: NavList social sessions LIVE todaySteve E. Bryant15 Apr 2020, 01:09
Re: Hyatt's Celestial CoordinatorSteve E. Bryant26 Apr 2020, 17:37
Intercept Method or Marcq St. HilaireSteve E. Bryant14 May 2020, 01:24
Re: Intercept Method or Marcq St. HilaireSteve E. Bryant14 May 2020, 02:51
Plotting sheetsThomas J. Murphy30 Jul 2020, 00:58
Re: Air Almanac 2020 full pdf now available...Thomas Spidle13 Jan 2020, 16:01
Re: Another SpaceX launch: photo celestialThomas Spidle13 Mar 2020, 01:54
Re: A-12 ExperiencesTibor Miseta9 Feb 2020, 23:23
Re: Venus in daylightTibor Miseta7 Apr 2020, 12:44
Re: Lockdown Escape (Madness?)Tibor Miseta29 Apr 2020, 22:07
Re: Sextant practice on the space stationTibor Miseta19 Jul 2020, 12:02
Re: GHA of the MoonTibor Miseta5 Oct 2020, 17:16
Simultaneous near limb - far limb lunarsTibor Miseta25 Oct 2020, 10:01
Re: Simultaneous near limb - far limb lunarsTibor Miseta27 Oct 2020, 10:46
Looking for Aviation sextant to buy - prefer periscopic pendulum design.Tom Cordell12 Jul 2020, 03:00
Re: Looking for Aviation sextant to buy - prefer periscopic pendulum design.Tom Cordell14 Jul 2020, 22:21
Re: International star name pronunciationsTom McCreary27 Dec 2020, 17:24
Re: Smart Phone CNTom Sult7 Mar 2020, 03:25
Re: ADMIN: The 21st Century Awaits...Tom Sult24 May 2020, 00:48
Re: Expensive toysTom Sult1 Aug 2020, 23:34
Fwd: Why GPS Doesn't WorkTom Sult18 Dec 2020, 15:06
How high is "Angels One Five"?Tony Oz3 Jan 2020, 02:41
Re: Hardly ever get an LOP than 20 NM - why?Tony Oz17 Jan 2020, 08:18
Wikipedia: (Russian-language) article on Gauss's direct fix calculationsTony Oz23 Jan 2020, 08:32
Re: Wikipedia: (Russian-language) article on Gauss's direct fix calculationsTony Oz24 Jan 2020, 09:40
Russian Tables of Computed Altitude and AzimuthTony Oz4 Feb 2020, 14:44
Re: Weems Star Altitude CurvesTony Oz5 Feb 2020, 13:51
Re: Russian Tables of Computed Altitude and AzimuthTony Oz5 Feb 2020, 17:13
Re: Weems Star Altitude CurvesTony Oz6 Feb 2020, 08:14
The All-Haversine formula for Hc known since 1924?Tony Oz6 Feb 2020, 17:56
Re: Weems Star Altitude CurvesTony Oz6 Feb 2020, 20:50
Re: Weems Star Altitude CurvesTony Oz6 Feb 2020, 22:06
Re: Weems Star Altitude CurvesTony Oz7 Feb 2020, 18:48
Re: Weems Star Altitude CurvesTony Oz8 Feb 2020, 08:20
Re: Weems Star Altitude CurvesTony Oz8 Feb 2020, 20:00
Re: A-12 ExperiencesTony Oz11 Feb 2020, 18:20
Re: Automatic Plotting of LOP's using graphing calculatorTony Oz13 Feb 2020, 23:19
Re: Automatic Plotting of LOP's using graphing calculatorTony Oz14 Feb 2020, 08:45
Re: Automatic Plotting of LOP's using graphing calculatorTony Oz14 Feb 2020, 18:43
Re: Two Bodies + Angle Between Them = Third LoPTony Oz17 Feb 2020, 20:36
Re: Two Bodies + Angle Between Them = Third LoPTony Oz17 Feb 2020, 21:24
Please help to identify a sextantTony Oz17 Feb 2020, 21:46
Re: Please help to identify a sextantTony Oz18 Feb 2020, 15:27
Re: Please help to identify a sextantTony Oz19 Feb 2020, 08:59
Artificial horizon: gyro vs bubble?Tony Oz19 Feb 2020, 09:05
Re: Artificial horizon: gyro vs bubble?Tony Oz20 Feb 2020, 08:36
Re: Artificial horizon: gyro vs bubble?Tony Oz24 Feb 2020, 09:36
Choosing right A-10: how to?Tony Oz26 Feb 2020, 15:58
Re: Choosing right A-10: how to?Tony Oz27 Feb 2020, 17:36
Re: Choosing right A-10: how to?Tony Oz2 Mar 2020, 08:42
Re: Today's sub-Sun pointTony Oz3 Mar 2020, 08:18
Re: ChronographTony Oz4 Mar 2020, 20:28
Re: Calculating the time when GHA is equals zero?Tony Oz9 Mar 2020, 18:59
Re: Using the sun's direct and reflected image to determine a sextant's IETony Oz9 Mar 2020, 19:26
Re: Using the sun's direct and reflected image to determine a sextant's IETony Oz10 Mar 2020, 13:41
Re: Using the sun's direct and reflected image to determine a sextant's IETony Oz10 Mar 2020, 18:47
Re: Calculating the time when GHA is equals zero?Tony Oz11 Mar 2020, 20:13
Re: Calculating the time when GHA is equals zero?Tony Oz12 Mar 2020, 18:02
Re: Calculating the time when GHA is equals zero?Tony Oz13 Mar 2020, 19:37
Re: Calculating the time when GHA is equals zero?Tony Oz13 Mar 2020, 22:58
Re: Calculating the time when GHA is equals zero?Tony Oz14 Mar 2020, 19:07
Re: Calculating the time when GHA is equals zero?Tony Oz16 Mar 2020, 10:58
Re: Navigate to this islandTony Oz19 Mar 2020, 20:24
Please help to identify a sextantTony Oz19 Mar 2020, 21:04
Re: Please help to identify a sextantTony Oz20 Mar 2020, 08:45
Re: Calculating the time when GHA is equals zero?Tony Oz21 Mar 2020, 07:08
Re: Tabulate Lunar Distances by GHATony Oz21 Mar 2020, 19:56
Re: Tabulate Lunar Distances by GHATony Oz21 Mar 2020, 20:03
Re: Please help to identify a sextantTony Oz21 Mar 2020, 20:43
Sun-Venus distance observationTony Oz22 Mar 2020, 20:26
Re: Sun-Venus distance observationTony Oz23 Mar 2020, 11:58
Re: LAN calculations for GHATony Oz26 Mar 2020, 22:54
Re: Sun-Venus distance observationTony Oz27 Mar 2020, 19:35
Re: Venus in daylightTony Oz28 Mar 2020, 18:57
Re: Venus in daylightTony Oz28 Mar 2020, 20:14
Re: Venus in daylightTony Oz29 Mar 2020, 13:21
Re: d correctionTony Oz29 Mar 2020, 16:25
Re: d correctionTony Oz30 Mar 2020, 09:11
Re: d correctionTony Oz30 Mar 2020, 21:38
Sirius: spin-off of the "Venus in daylight"Tony Oz5 Apr 2020, 00:36
A strange set of Venus LoPs.Tony Oz6 Apr 2020, 09:29
Re: A strange set of Venus LoPs.Tony Oz6 Apr 2020, 16:35
Re: A strange set of Venus LoPs.Tony Oz6 Apr 2020, 18:42
Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz10 Apr 2020, 22:06
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz11 Apr 2020, 20:26
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz11 Apr 2020, 22:51
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz12 Apr 2020, 10:45
2020-04-12: 59 Earth revolutions around the Sun - since the first man orbited the Earth!Tony Oz12 Apr 2020, 11:49
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz14 Apr 2020, 14:41
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz15 Apr 2020, 07:40
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz15 Apr 2020, 16:15
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz18 Apr 2020, 21:00
Re: Venus mer-pass for Lat, Sun time sight for Lon.Tony Oz20 Apr 2020, 09:03
False horizon under the Moon, under the Sun too?Tony Oz20 Apr 2020, 11:58
Re: False horizon under the Moon, under the Sun too?Tony Oz21 Apr 2020, 08:26
Re: False horizon under the Moon, under the Sun too?Tony Oz21 Apr 2020, 11:33
April 28: Venus maximum brillianceTony Oz21 Apr 2020, 12:37
Re: False horizon under the Moon, under the Sun too?Tony Oz22 Apr 2020, 12:42
Re: Sign of d in HO249Tony Oz23 Apr 2020, 14:57
WWV is audible again (here)Tony Oz24 Apr 2020, 19:01
Re: WWV is audible again (here)Tony Oz25 Apr 2020, 08:40
Re: WWV is audible again (here)Tony Oz26 Apr 2020, 21:19
Re: Lockdown Escape (Madness?)Tony Oz30 Apr 2020, 14:26
2020-05-03 Sun-Venus sessionTony Oz3 May 2020, 21:25
Congratulations on the Victory Day!Tony Oz9 May 2020, 09:51
Re: Weems and Plath Celestial Slide RuleTracy Shrier9 Apr 2020, 23:51
Re: Weems and Plath Celestial Slide RuleTracy Shrier14 Apr 2020, 20:56
Re: My Marine E6M ( A marine version of the E6B )Tracy Shrier12 May 2020, 02:53
Re: Longitude at noonTracy Shrier9 Sep 2020, 17:05
Re: Longitude at noonTracy Shrier9 Sep 2020, 21:58
Cel Nav Training FilmTracy Shrier21 Sep 2020, 20:35
Re: Radians and DegreesTracy Shrier1 Nov 2020, 17:21
Ball Drop SextantVicente Botella23 Jun 2020, 16:21
Re: Ball Drop SextantVicente Botella24 Jun 2020, 08:17
Re: Incomplete Instrument-- WWII German SoldsextantWerner Luehmann3 Dec 2020, 18:38
Re: Starmaster slide rule on ebayWil Bailey31 Jan 2020, 11:56
Re: Mystery Navy DeviceWilliam Edward Henry11 Jan 2020, 18:28
Re: Burton's Nautical TablesWilliam Edward Henry2 Jul 2020, 21:15
Re: RAF O6a CompassWilliam Edward Henry18 Jul 2020, 16:12
Re: Air Almanac 2020 full pdf now available...Willy Unger10 May 2020, 03:44
Re: Hybrid artificial horizonWolfgang Hasper20 Jul 2020, 10:07
Re: Incomplete Instrument-- WWII German SoldsextantWolfgang Hasper1 Dec 2020, 12:38
Re: Captain Cook & celestial navigationWolfgang Köberer5 Feb 2020, 10:04
Re: [OT] Browser trickWolfgang Köberer1 Mar 2020, 18:08
Re: Maskelyne: Astronomer RoyalWolfgang Köberer25 Mar 2020, 16:53
Re: Equal Azimuth LinesWolfgang Köberer15 May 2020, 16:29
Re: Janet Taylor octantWolfgang Köberer25 May 2020, 07:21
Re: Bygrave Equations with a CalculatorÖrjan Sandström27 Dec 2020, 12:30

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