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

April, 2019

Index includes 136 messages. Sorted alphabetically by subject.

                    
"Modern Celestial" on the Hudson RiverFrank Reed8 Apr 2019, 18:44
Article: GPS Jamming, Spoofing, and BackupsFrank Reed23 Apr 2019, 18:16
Re: Article: GPS Jamming, Spoofing, and BackupsGregg Jarrette23 Apr 2019, 18:45
Re: Brown-Nassau Spherical computerAlan S16 Apr 2019, 03:13
Can humans sense the earth's magnetic field?Lu Abel29 Apr 2019, 15:30
Re: Can humans sense the earth's magnetic field?Frank Reed30 Apr 2019, 17:49
Comet Donati above Paris 1858Frank Reed20 Apr 2019, 20:39
Re: Comet Donati above Paris 1858Alexandre Eremenko21 Apr 2019, 00:53
Re: Comet Donati above Paris 1858Robin Stuart21 Apr 2019, 14:28
Re: Comet Donati above Paris 1858Don Seltzer21 Apr 2019, 15:38
Re: Comet Donati above Paris 1858Brad Morris21 Apr 2019, 16:52
Re: Comet Donati above Paris 1858Robin Stuart21 Apr 2019, 18:56
Re: Comet Donati above Paris 1858Frank Reed21 Apr 2019, 20:05
Re: Comet Donati above Paris 1858Frank Reed21 Apr 2019, 20:47
Re: Comet Donati above Paris 1858Luc Van den Borre21 Apr 2019, 23:52
Re: Comet Donati above Paris 1858Luc Van den Borre22 Apr 2019, 00:22
Re: Comet Donati above Paris 1858Frank Reed23 Apr 2019, 02:08
Constructing the axes of the sum of squares ellipseBill Lionheart9 Apr 2019, 10:18
Re: Constructing the axes of the sum of squares ellipseRoger W. Sinnott10 Apr 2019, 19:23
Re: Cpu-50A/PAlan S2 Apr 2019, 03:24
Davis Artificial Horizon FiltersGreg Rudzinski16 Apr 2019, 15:09
Early Air Navigation with RDFEd Popko16 Apr 2019, 23:03
Re: Early Air Navigation with RDFKen Gebhart17 Apr 2019, 15:54
Re: Early Air Navigation with RDFDustin Baenen17 Apr 2019, 19:26
Re: Early Air Navigation with RDFPaul Hirose17 Apr 2019, 19:33
Re: Early Air Navigation with RDFDavid Pike17 Apr 2019, 19:53
Re: Early Air Navigation with RDFJacob M. Huffman III17 Apr 2019, 23:09
Re: Early Air Navigation with RDFDavid C18 Apr 2019, 04:35
Re: Early Air Navigation with RDFEd Popko18 Apr 2019, 10:30
Re: Early Air Navigation with RDFTony Oz18 Apr 2019, 14:43
Re: Early Air Navigation with RDFJoe Suligoy21 Apr 2019, 21:49
Re: Early Air Navigation with RDFBrad Morris22 Apr 2019, 03:03
Re: Early Air Navigation with RDFEd Popko22 Apr 2019, 13:28
Re: Early Air Navigation with RDFFrank Reed22 Apr 2019, 15:31
Re: Early Air Navigation with RDFJoe Suligoy22 Apr 2019, 23:14
Re: Early Air Navigation with RDFBrad Morris23 Apr 2019, 00:47
Re: Early Air Navigation with RDFDavid Pike29 Apr 2019, 20:28
Earthrise.Francis Upchurch29 Apr 2019, 13:50
Re: Earthrise.Frank Reed30 Apr 2019, 17:45
First commercial aircraft with GPSEd Popko20 Apr 2019, 10:05
Re: First commercial aircraft with GPSJohn D. Howard20 Apr 2019, 21:27
Re: First commercial aircraft with GPSFrank Reed20 Apr 2019, 21:45
Re: First commercial aircraft with GPSPeter Monta21 Apr 2019, 19:33
Re: First commercial aircraft with GPSDavid Pike21 Apr 2019, 22:43
Re: First commercial aircraft with GPSEd Popko22 Apr 2019, 12:33
Fwd: Saturn photoHewitt Schlereth24 Apr 2019, 23:32
Re: GPS Anti Spoof app updateSteve E. Bryant2 Apr 2019, 03:00
Re: GPS Anti Spoof app updateJohn D. Howard2 Apr 2019, 15:14
Re: GPS Anti Spoof app updateBruce Cutting2 Apr 2019, 20:11
Re: GPS Anti Spoof app updateJohn D. Howard3 Apr 2019, 02:25
Re: GPS Anti Spoof app updateHerman Dekker5 Apr 2019, 05:44
Re: GPS Anti Spoof app updateMark Coady18 Apr 2019, 01:48
High Altitude Camera Bris Calibrated TrialsGreg Rudzinski22 Apr 2019, 13:29
Re: High Altitude Camera Bris Calibrated TrialsGreg Rudzinski23 Apr 2019, 12:17
Re: High Altitude Camera Bris Calibrated TrialsGregg Jarrette23 Apr 2019, 18:22
Re: High Altitude Camera Bris Calibrated TrialsGreg Rudzinski23 Apr 2019, 19:08
Re: High Altitude Camera Bris Calibrated TrialsGregg Jarrette23 Apr 2019, 20:37
Re: High Altitude Camera Bris Calibrated TrialsPaul Saffo24 Apr 2019, 19:14
Is All-Haversine SR the be-all and end-all?Tony Oz17 Apr 2019, 08:43
Re: Is All-Haversine SR the be-all and end-all?Greg Rudzinski17 Apr 2019, 15:48
Re: Is All-Haversine SR the be-all and end-all?Tony Oz18 Apr 2019, 08:37
Re: Is All-Haversine SR the be-all and end-all?Greg Rudzinski18 Apr 2019, 14:45
Re: Is All-Haversine SR the be-all and end-all?Greg Rudzinski18 Apr 2019, 14:54
Re: Is All-Haversine SR the be-all and end-all?John D. Howard18 Apr 2019, 18:58
Mariner's astrolabe from Museo Naval de MadridAndrew Nikitin11 Apr 2019, 04:32
Re: Mariner's astrolabe from Museo Naval de MadridAndrés Ruiz11 Apr 2019, 06:21
Re: Mariner's astrolabe from Museo Naval de MadridEd Popko11 Apr 2019, 09:52
Re: Mariner's astrolabe from Museo Naval de MadridAlexandre Eremenko11 Apr 2019, 10:29
Re: Mariner's astrolabe from Museo Naval de MadridAndrew Nikitin12 Apr 2019, 14:18
Navigation mistakes in music...Greg Licfi11 Apr 2019, 11:47
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe9 Apr 2019, 19:58
Re: Northern Limits of Magnetic Compass UsefulnessGeoffrey Kolbe10 Apr 2019, 06:28
Re: Northern Limits of Magnetic Compass UsefulnessBill Lionheart10 Apr 2019, 14:50
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe10 Apr 2019, 19:57
Re: Northern Limits of Magnetic Compass UsefulnessEd Popko12 Apr 2019, 09:42
Plotting Tools?George F. Prescott4 Apr 2019, 20:40
Re: Plotting Tools?Jacob M. Huffman III5 Apr 2019, 04:05
Re: Plotting Tools?David Pike5 Apr 2019, 08:50
Re: Plotting Tools?Jürgen Hoefeld5 Apr 2019, 17:27
Re: Plotting Tools?David Pike5 Apr 2019, 21:48
Re: Plotting Tools?David Pike7 Apr 2019, 09:01
Polariser (photo) filter as a sextant shade - my experience.Tony Oz27 Apr 2019, 09:05
Re: Polariser (photo) filter as a sextant shade - my experience.Ed Popko27 Apr 2019, 16:31
Re: Polariser (photo) filter as a sextant shade - my experience.Tony Oz27 Apr 2019, 20:42
Re: Possible GPS Date Rollover problems week of April 6, 2019Geoffrey Kolbe1 Apr 2019, 05:19
Re: Possible GPS Date Rollover problems week of April 6, 2019Brad Morris7 Apr 2019, 00:31
Re: Possible GPS Date Rollover problems week of April 6, 2019Geoffrey Kolbe7 Apr 2019, 06:30
Re: Possible GPS Date Rollover problems week of April 6, 2019David Pike7 Apr 2019, 16:57
Re: Possible GPS Date Rollover problems week of April 6, 2019Peter Monta7 Apr 2019, 22:55
Reeds versine formulasÖrjan Sandström15 Apr 2019, 13:52
Re: Reeds versine formulasBrian Walton16 Apr 2019, 11:21
Re: Reeds versine formulasÖrjan Sandström16 Apr 2019, 18:08
Sextant use on tankerThomas Spidle13 Apr 2019, 15:15
Re: Sextant use on tankerEd Popko13 Apr 2019, 21:21
Re: Sextant use on tankerThomas Spidle15 Apr 2019, 07:36
SofaJpl page is downPaul Hirose8 Apr 2019, 20:00
Re: SofaJpl page is downPaul Hirose10 Apr 2019, 21:35
Star to Star Distance Sextant CalibrationMichael Bradley10 Apr 2019, 21:59
Re: Star to Star Distance Sextant CalibrationAlexandre Eremenko10 Apr 2019, 23:04
Re: Star to Star Distance Sextant CalibrationAndrés Ruiz11 Apr 2019, 07:23
Re: Star to Star Distance Sextant CalibrationMichael Bradley11 Apr 2019, 22:39
Re: Star to Star Distance Sextant CalibrationPaul Hirose12 Apr 2019, 02:52
Sun Compass-Interesting UseBruce J. Pennino12 Apr 2019, 03:14
Re: Sun Compass-Interesting UseBill Morris18 Apr 2019, 22:58
Re: Sun Compass-Interesting UseGeoffrey Kolbe19 Apr 2019, 06:22
Re: Sun Compass-Interesting UseGeoffrey Kolbe19 Apr 2019, 06:40
Re: Sun Compass-Interesting UseBruce J. Pennino19 Apr 2019, 13:04
Re: Sun Compass-Interesting UseBob Goethe20 Apr 2019, 02:43
Re: The Appleyard Course and Distance ComputerAdrian F17 Apr 2019, 21:06
The Sextant ...Ed Popko27 Apr 2019, 21:13
Re: Today’s the Spring EquinoxDavid Shoemaker5 Apr 2019, 12:07
Re: Today’s the Spring EquinoxPaul Hirose7 Apr 2019, 04:48
Re: Today’s the Spring EquinoxDavid Shoemaker7 Apr 2019, 13:14
Re: Today’s the Spring EquinoxDavid Shoemaker8 Apr 2019, 11:31
Troughton and Simms SextantRichard Kennedy7 Apr 2019, 20:57
Re: Troughton and Simms SextantAlexandre Eremenko8 Apr 2019, 01:53
Re: Troughton and Simms SextantBrad Morris8 Apr 2019, 02:42
Re: Troughton and Simms SextantÖrjan Sandström8 Apr 2019, 09:41
Re: Troughton and Simms SextantRichard Kennedy8 Apr 2019, 21:39
Re: Troughton and Simms SextantRichard Kennedy8 Apr 2019, 21:45
Re: Troughton and Simms SextantStephen N.G. Davies9 Apr 2019, 10:28
Re: Troughton and Simms SextantBill Morris10 Apr 2019, 04:48
Re: Troughton and Simms SextantRichard Kennedy17 Apr 2019, 10:53
Re: Troughton and Simms SextantBill Morris24 Apr 2019, 22:00
Wikipedia article on Winslow Homer's "Eight Bells"Frank Reed8 Apr 2019, 19:32
Re: Wikipedia article on Winslow Homer's "Eight Bells"Doug MacPherson8 Apr 2019, 23:06
Re: Wikipedia article on Winslow Homer's "Eight Bells"Peter Monta9 Apr 2019, 03:18
Re: Wikipedia article on Winslow Homer's "Eight Bells"Geoffrey Kolbe9 Apr 2019, 07:55
Re: Wikipedia article on Winslow Homer's "Eight Bells"David Pike9 Apr 2019, 08:00
Re: Wikipedia article on Winslow Homer's "Eight Bells"Herman Dekker9 Apr 2019, 09:50
Re: Wikipedia article on Winslow Homer's "Eight Bells"Bill Lionheart9 Apr 2019, 10:32
Re: Wikipedia article on Winslow Homer's "Eight Bells"Frank Reed9 Apr 2019, 17:40
Re: Wikipedia article on Winslow Homer's "Eight Bells"Bill Lionheart9 Apr 2019, 18:26
Re: Wikipedia article on Winslow Homer's "Eight Bells"Ed Popko10 Apr 2019, 10:40
Yoda the NavigatorFrank Reed15 Apr 2019, 22:42
Re: Yoda the NavigatorTony Oz16 Apr 2019, 07:27

Index includes 136 messages.

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