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

December, 2020

Index includes 236 messages. Sorted by message ID, in descending order.

                    
Re: Christmas week QuizzesDon Seltzer31 Dec 2020, 15:42
Re: Christmas week QuizzesDavid Pike31 Dec 2020, 10:54
Re: Sides of the Navigational Triangle - Naming Conventions?David Pike31 Dec 2020, 10:23
Re: Sides of the Navigational Triangle - Naming Conventions?David Iwancio31 Dec 2020, 01:25
Sides of the Navigational Triangle - Naming Conventions?Bob Goethe30 Dec 2020, 22:41
Re: MK2A periscope sextantK McGrath30 Dec 2020, 14:18
Re: Christmas week QuizzesDavid Pike30 Dec 2020, 10:05
Re: Obscure Nautical Almanac starFrank Reed30 Dec 2020, 01:02
Re: Help Please - paper by Griffiths? on all haversine methodsMichael Bradley29 Dec 2020, 21:54
Re: Obscure Nautical Almanac starJohn Clements29 Dec 2020, 21:01
Re: Obscure Nautical Almanac starRobert H. van Gent29 Dec 2020, 16:55
Re: Obscure Nautical Almanac starFrank Reed29 Dec 2020, 16:27
Re: Help Please - paper by Griffiths? on all haversine methodsDave Walden29 Dec 2020, 15:29
Re: Christmas week QuizzesDavid Pike29 Dec 2020, 12:42
Re: Christmas week QuizzesDavid Pike29 Dec 2020, 12:25
Re: Christmas week QuizzesModris Fersters29 Dec 2020, 11:56
Re: Obscure Nautical Almanac starRobert H. van Gent29 Dec 2020, 11:44
Re: Two years after Galileo: an English telescope in JapanFred Hebard29 Dec 2020, 06:09
Re: Two years after Galileo: an English telescope in JapanDavid Fleming28 Dec 2020, 22:23
Re: Christmas week QuizzesGreg Rudzinski28 Dec 2020, 21:22
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 Hebard28 Dec 2020, 20:52
Re: Two years after Galileo: an English telescope in JapanDavid Fleming28 Dec 2020, 19:38
Re: Two years after Galileo: an English telescope in JapanChristopher Willmes28 Dec 2020, 18:14
Re: More sunlight in Greenland than in the AmazonFrank Reed28 Dec 2020, 18:13
Re: Obscure Nautical Almanac starFrank Reed28 Dec 2020, 18:13
Re: Two years after Galileo: an English telescope in JapanChristopher Willmes28 Dec 2020, 18:10
Re: Obscure Nautical Almanac starFrank Reed28 Dec 2020, 17:59
Re: Two years after Galileo: an English telescope in JapanFred Hebard28 Dec 2020, 17:48
Re: Obscure Nautical Almanac starRobert H. van Gent28 Dec 2020, 17:36
Two years after Galileo: an English telescope in JapanFrank Reed28 Dec 2020, 17:02
Re: Christmas week QuizzesJim Vrancik28 Dec 2020, 14:47
Re: Christmas week QuizzesDavid Pike28 Dec 2020, 11:39
Re: Christmas week QuizzesMike Burkes28 Dec 2020, 02:18
Obscure Nautical Almanac starFrank Reed27 Dec 2020, 22:44
Re: Online meetings, Office Hours, Christmas & New Years DayFrank Reed27 Dec 2020, 20:08
Sailing to CapeTown from the Falklands in winter - July-August 2020John Carbone27 Dec 2020, 19:53
Re: Sunderlands and marine sextantsDavid Pike27 Dec 2020, 18:51
Re: Sunderlands and marine sextantsDavid Pike27 Dec 2020, 18:35
Re: Christmas week QuizzesDavid Pike27 Dec 2020, 17:57
Re: More sunlight in Greenland than in the AmazonAdrian F27 Dec 2020, 17:44
Re: Christmas week QuizzesDavid Pike27 Dec 2020, 17:43
Re: International star name pronunciationsTom McCreary27 Dec 2020, 17:24
Re: Christmas week QuizzesModris Fersters27 Dec 2020, 17:14
Re: Christmas week QuizzesGreg Rudzinski27 Dec 2020, 15:16
Re: Bygrave Equations with a CalculatorÖrjan Sandström27 Dec 2020, 12:30
Re: Christmas week QuizzesDavid Pike27 Dec 2020, 12:12
Re: Help Please - paper by Griffiths? on all haversine methodsMichael Bradley27 Dec 2020, 10:36
Re: Bygrave Equations with a CalculatorFrank Reed27 Dec 2020, 03:22
Re: Jupiter-Moon Lunar from a photoFrank Reed27 Dec 2020, 03:10
Re: Christmas week QuizzesHerman Dekker26 Dec 2020, 21:32
Re: More sunlight in Greenland than in the AmazonDavid Pike26 Dec 2020, 19:03
International star name pronunciationsFrank Reed26 Dec 2020, 18:04
Re: More sunlight in Greenland than in the AmazonFrank Reed26 Dec 2020, 16:40
Re: Christmas week QuizzesGreg Rudzinski26 Dec 2020, 16:40
Re: More sunlight in Greenland than in the AmazonDavid Pike26 Dec 2020, 15:23
Re: Christmas week QuizzesJim Vrancik26 Dec 2020, 14:23
Re: Help Please - paper by Griffiths? on all haversine methodsGreg Rudzinski26 Dec 2020, 13:48
Re: More sunlight in Greenland than in the AmazonAdrian F26 Dec 2020, 12:23
Christmas week QuizzesDavid Pike26 Dec 2020, 10:35
Help Please - paper by Griffiths? on all haversine methodsMichael Bradley26 Dec 2020, 09:20
Re: Bygrave Equations with a CalculatorDavid C26 Dec 2020, 07:35
Re: Bygrave Equations with a CalculatorFrank Reed26 Dec 2020, 04:25
Re: Bygrave Equations with a CalculatorDavid C26 Dec 2020, 03:17
Re: MK2A periscope sextantDavid Pike25 Dec 2020, 21:45
Re: More sunlight in Greenland than in the AmazonDavid Pike25 Dec 2020, 19:44
Re: Jupiter-Moon Lunar from a photoModris Fersters25 Dec 2020, 19:07
Re: Bygrave Equations with a CalculatorFrank Reed25 Dec 2020, 15:52
Re: MK2A periscope sextantK McGrath25 Dec 2020, 15:12
Bygrave Equations with a CalculatorBob Goethe25 Dec 2020, 14:59
Re: Different (?) vernierNoell Wilson25 Dec 2020, 12:50
Re: More sunlight in Greenland than in the AmazonSean C25 Dec 2020, 08:45
Re: More sunlight in Greenland than in the AmazonFrank Reed25 Dec 2020, 04:53
Re: Latitude by two star altitudes using 19.century BowditchFrank Reed24 Dec 2020, 22:48
Re: MK2A periscope sextantDavid Pike24 Dec 2020, 21:50
Re: Flight 19 lost, 75 years ago todayGary LaPook24 Dec 2020, 18:55
Re: Jupiter-Moon Lunar from a photoMehmet Guzey24 Dec 2020, 18:52
Re: Flight 19 lost, 75 years ago todayJohn Matter24 Dec 2020, 18:01
Online meetings, Office Hours, Christmas & New Years DayFrank Reed24 Dec 2020, 17:43
Re: Jupiter-Moon Lunar from a photoFrank Reed24 Dec 2020, 15:46
Re: More sunlight in Greenland than in the AmazonNick M24 Dec 2020, 14:21
Re: Jupiter-Moon Lunar from a photoModris Fersters24 Dec 2020, 10:15
Re: Sunderlands and marine sextantsDavid Pike24 Dec 2020, 09:39
Re: More sunlight in Greenland than in the AmazonSean C24 Dec 2020, 06:35
Re: MK2A periscope sextantK McGrath23 Dec 2020, 23:35
Re: Sunderlands and marine sextantsDavid Pike23 Dec 2020, 21:08
Re: MK2A periscope sextantDavid Pike23 Dec 2020, 20:55
Re: Jupiter-Moon Lunar from a photoMehmet Guzey23 Dec 2020, 19:57
Re: Jupiter-Moon Lunar from a photoFrank Reed23 Dec 2020, 19:35
Re: Jupiter-Moon Lunar from a photoMehmet Guzey23 Dec 2020, 19:10
Re: Sunderlands and marine sextantsMaarten F23 Dec 2020, 18:43
Re: MK2A periscope sextantK McGrath23 Dec 2020, 18:33
Re: More sunlight in Greenland than in the AmazonDavid Pike23 Dec 2020, 16:55
Re: The Great ConjunctionFrank Reed23 Dec 2020, 15:31
More sunlight in Greenland than in the AmazonFrank Reed23 Dec 2020, 15:05
Re: MK2A periscope sextantDavid Pike23 Dec 2020, 12:29
Re: MK2A periscope sextantDavid Pike23 Dec 2020, 11:16
Re: MK2A periscope sextantGary LaPook23 Dec 2020, 03:49
Re: The Great ConjunctionPeter Hakel23 Dec 2020, 00:32
Re: The Great ConjunctionMurray Buckman22 Dec 2020, 23:51
MK2A periscope sextantK McGrath22 Dec 2020, 22:27
Re: The Great ConjunctionMichael Cain22 Dec 2020, 20:05
Re: Different (?) vernierMarty Lyons22 Dec 2020, 17:07
Re: Different (?) vernierMarty Lyons22 Dec 2020, 17:01
Fwd: Christmas StarRommel John Miller21 Dec 2020, 23:54
Re: The Great ConjunctionGreg Rudzinski21 Dec 2020, 23:52
Re: Zenith distance and Ho question.Robert Goldberg21 Dec 2020, 21:32
The Great ConjunctionDavid C21 Dec 2020, 21:21
Re: Jupiter-Moon Lunar from a photoGreg Rudzinski21 Dec 2020, 04:30
Re: Jupiter-Moon Lunar from a photoFrank Reed20 Dec 2020, 21:46
Re: Jupiter-Moon Lunar from a photoModris Fersters20 Dec 2020, 21:01
Re: Saturn and Jupiter: one degree separationFrank Reed20 Dec 2020, 18:35
Re: Different (?) vernierDavid Pike20 Dec 2020, 17:58
Re: Zenith distance and Ho question.David Pike20 Dec 2020, 17:43
Re: Jupiter-Moon Lunar from a photoModris Fersters20 Dec 2020, 17:14
Re: Different (?) vernierNoell Wilson20 Dec 2020, 13:10
Re: Zenith distance and Ho question.Frank Reed20 Dec 2020, 06:17
Re: Zenith distance and Ho question.John Clements20 Dec 2020, 03:58
Re: Zenith distance and Ho question.Robert Goldberg20 Dec 2020, 00:56
Re: Zenith distance and Ho question.Frank Reed19 Dec 2020, 23:52
Re: Zenith distance and Ho question.Robert Goldberg19 Dec 2020, 21:43
Re: Jupiter-Moon Lunar from a photoGreg Rudzinski19 Dec 2020, 19:21
Re: Zenith distance and Ho question.Frank Reed19 Dec 2020, 18:23
Re: Jupiter-Moon Lunar from a photoGreg Rudzinski19 Dec 2020, 15:08
Zenith distance and Ho question.Robert Goldberg19 Dec 2020, 14:00
Re: Jupiter-Moon Lunar from a photoFrank Reed19 Dec 2020, 04:28
Jupiter-Moon Lunar from a photoFrank Reed19 Dec 2020, 04:13
GPS outagesGary LaPook18 Dec 2020, 23:47
Re: Different (?) vernierDavid Pike18 Dec 2020, 19:37
Re: Different (?) vernierDavid Pike18 Dec 2020, 18:16
Fwd: Why GPS Doesn't WorkTom Sult18 Dec 2020, 15:06
Different (?) vernierNoell Wilson18 Dec 2020, 13:02
Re: V correction and the sunDavid Iwancio18 Dec 2020, 03:53
Re: 2021 Air Almanac pdfDavid Pike17 Dec 2020, 21:43
Re: 2021 Air Almanac pdfHerman Dekker17 Dec 2020, 21:14
2021 Air Almanac pdfFrank Reed17 Dec 2020, 20:21
Re: V correction and the sunBob Goethe16 Dec 2020, 06:18
Re: V correction and the sunNick M16 Dec 2020, 00:38
V correction and the sunBob Goethe15 Dec 2020, 23:14
Re: Today's online discussionGary LaPook14 Dec 2020, 21:50
Re: Today's online discussionGary LaPook14 Dec 2020, 21:46
Re: Smith's Mk2T (twilight) Periscopic SextantGary LaPook14 Dec 2020, 20:57
Smith's Mk2T (twilight) Periscopic SextantDavid Pike14 Dec 2020, 17:12
Today's online discussionGary LaPook14 Dec 2020, 06:37
Latitude by two star altitudes using 19.century BowditchModris Fersters14 Dec 2020, 02:48
Re: Saturn and Jupiter: one degree separationGreg Rudzinski14 Dec 2020, 00:37
More RIN Free WebinarsDavid Pike14 Dec 2020, 00:25
Navigation Spreadsheets in 2021Peter Hakel13 Dec 2020, 19:44
Re: Sextant RepairsPatrick Pont13 Dec 2020, 13:05
Latitude by Regor : 1.5 degrees meridian altitudeFrank Reed13 Dec 2020, 03:15
Re: New Scientist: GPS mystery is making ships appear to teleport and move in circlesPaul Saffo13 Dec 2020, 03:14
Re: Online "Office Hours", Sunday 6m EST / 3pm PST (2300 UT)Frank Reed13 Dec 2020, 02:27
Re: New Scientist: GPS mystery is making ships appear to teleport and move in circlesDoug Faunt13 Dec 2020, 01:29
Re: New Scientist: GPS mystery is making ships appear to teleport and move in circlesFrank Reed13 Dec 2020, 00:01
Re: Saturn and Jupiter: one degree separationGreg Rudzinski12 Dec 2020, 23:49
New Scientist: GPS mystery is making ships appear to teleport and move in circlesPaul Saffo12 Dec 2020, 22:48
Re: Saturn and Jupiter: one degree separationDavid C12 Dec 2020, 21:53
Re: Davis sextant plasticDavid Pike12 Dec 2020, 20:33
Re: Davis sextant plasticGreg Rudzinski12 Dec 2020, 17:42
Re: Davis sextant plasticBill Lionheart12 Dec 2020, 14:39
Re: Davis sextant plasticBill Lionheart12 Dec 2020, 14:37
Re: Beta Cap -- the tenth lunars starDavid C12 Dec 2020, 05:13
Re: Saturn and Jupiter: one degree separationFrank Reed12 Dec 2020, 02:52
Re: Saturn and Jupiter: one degree separationPaul Saffo12 Dec 2020, 01:55
Re: Davis sextant plasticKen Gebhart11 Dec 2020, 19:24
Re: Davis sextant plasticGreg Rudzinski11 Dec 2020, 19:09
Davis sextant plasticPhilippe Posth11 Dec 2020, 18:16
Saturn and Jupiter: one degree separationFrank Reed10 Dec 2020, 23:13
200mm Lens Calibration Using DoublerGreg Rudzinski9 Dec 2020, 22:37
Re: Sextant with Ivory Scale, Serial No 577 by G. A. Berry & Son, Hartlepool,David Pike9 Dec 2020, 13:01
Re: Polar distance of PolarisGary LaPook9 Dec 2020, 08:47
Re: Polar distance of PolarisHerman Dekker8 Dec 2020, 02:41
Re: Polar distance of PolarisGary LaPook8 Dec 2020, 01:18
Polar distance of PolarisBob Goethe7 Dec 2020, 23:14
Re: Sextant with Ivory Scale, Serial No 577 by G. A. Berry & Son, Hartlepool,Bill Morris7 Dec 2020, 21:30
Re: Big Dipper and calculator historyPaul Saffo7 Dec 2020, 20:05
Re: Poor BecruxAl Stewart7 Dec 2020, 16:25
Re: Butterfly Bris PrototypeGreg Rudzinski7 Dec 2020, 13:35
Re: Poor BecruxDavid Pike7 Dec 2020, 12:15
Sextant with Ivory Scale, Serial No 577 by G. A. Berry & Son, Hartlepool,David Pike7 Dec 2020, 09:41
Re: Polaris LunarsDavid Iwancio7 Dec 2020, 08:52
Re: Poor BecruxDavid C7 Dec 2020, 07:53
Poor BecruxFrank Reed7 Dec 2020, 04:52
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed7 Dec 2020, 03:56
Re: Butterfly Bris PrototypePatrick Pont6 Dec 2020, 22:06
Re: C. 1900 mercury AHDavid Pike6 Dec 2020, 21:41
Online "Office Hours", 3pm Pacific Time (2300 UT)Frank Reed6 Dec 2020, 20:02
Re: C. 1900 mercury AHFrank Reed6 Dec 2020, 20:00
Re: Latitude by Alnair : two degrees meridian altitudeMike Burkes6 Dec 2020, 19:08
Re: Big Dipper and calculator historyGreg Rudzinski6 Dec 2020, 13:15
Re: C. 1900 mercury AHNoell Wilson6 Dec 2020, 12:39
Re: Big Dipper and calculator historyPaul Saffo6 Dec 2020, 11:28
Re: Big Dipper and calculator historyPaul Saffo6 Dec 2020, 04:47
Big Dipper and calculator historyPaul Saffo6 Dec 2020, 02:42
Re: C. 1900 mercury AHDavid Pike5 Dec 2020, 21:29
Re: C. 1900 mercury AHDavid Pike5 Dec 2020, 21:13
Flight 19 lost, 75 years ago todayFrank Reed5 Dec 2020, 18:43
Navigation stars over Australia this morningFrank Reed5 Dec 2020, 18:14
C. 1900 mercury AHNoell Wilson5 Dec 2020, 14:28
Re: Polaris LunarsFrank Reed5 Dec 2020, 04:21
Re: Polaris LunarsDavid Iwancio5 Dec 2020, 03:41
Re: Low Altitude Sun Artificial Horizon ExerciseBill Ritchie4 Dec 2020, 23:21
Re: Upcoming Royal Institute of Navigation Free WebinarsDavid Pike4 Dec 2020, 19:07
Office Hours, online video meeting today (45 minutes from now)Frank Reed4 Dec 2020, 16:17
Polaris LunarsFrank Reed4 Dec 2020, 16:11
Re: British Air NavigationDavid Pike4 Dec 2020, 10:44
Re: 1st type Hand held Bagnold Sun CompassDavid Pike3 Dec 2020, 22:20
Re: Low Altitude Sun Artificial Horizon ExerciseRichard MacCormac3 Dec 2020, 21:01
Re: Money from celestial appsFrank Reed3 Dec 2020, 20:59
Money from celestial appsFrank Reed3 Dec 2020, 20:28
Re: Low Altitude Sun Artificial Horizon ExerciseGreg Rudzinski3 Dec 2020, 19:11
Re: Low Altitude Sun Artificial Horizon ExerciseGreg Rudzinski3 Dec 2020, 19:02
Re: Incomplete Instrument-- WWII German SoldsextantWerner Luehmann3 Dec 2020, 18:38
Re: Arecibo - GoneRobin Stuart3 Dec 2020, 13:34
Re: Low Altitude Sun Artificial Horizon ExerciseRichard MacCormac3 Dec 2020, 11:59
Re: 1st type Hand held Bagnold Sun CompassDavid Harrison2 Dec 2020, 12:34
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed2 Dec 2020, 04:02
Re: Latitude by Alnair : two degrees meridian altitudeJohn Clements2 Dec 2020, 03:49
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed2 Dec 2020, 03:44
Re: Latitude by Alnair : two degrees meridian altitudePeter Hakel1 Dec 2020, 23:52
Re: Arecibo - GoneAlexandre Eremenko1 Dec 2020, 20:23
Re: Latitude by Alnair : two degrees meridian altitudeDavid C1 Dec 2020, 20:21
Re: Arecibo - GoneJames F. Campbell1 Dec 2020, 19:24
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed1 Dec 2020, 18:30
Re: Small craft RDF in 1967Doug Faunt1 Dec 2020, 18:25
Arecibo - GoneFrank Reed1 Dec 2020, 18:25
Re: Latitude by Alnair : two degrees meridian altitudeD Maracle1 Dec 2020, 16:58
Re: Small craft RDF in 1967Bill Lionheart1 Dec 2020, 16:41
Re: Small craft RDF in 1967Bruce Cutting1 Dec 2020, 16:36
Re: Latitude by Alnair : two degrees meridian altitudeGeorge Kaplan1 Dec 2020, 14:39
Re: Small craft RDF in 1967Francis Upchurch1 Dec 2020, 13:29
Re: Incomplete Instrument-- WWII German SoldsextantWolfgang Hasper1 Dec 2020, 12:38
Re: Latitude by Alnair : two degrees meridian altitudeFrank Reed1 Dec 2020, 02:44
Re: Latitude by Alnair : two degrees meridian altitudeBob Goethe1 Dec 2020, 02:35
Re: Low Altitude Sun Artificial Horizon ExerciseGreg Rudzinski1 Dec 2020, 00:50
Re: F tables - "F-Tafel"Jerry Mason1 Dec 2020, 00:36

Index includes 236 messages.

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