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

April, 2018

Index includes 190 messages. Sorted alphabetically by subject.

                    
Article: Inside the Worst U.S. Maritime Disaster in DecadesJackson McDonald9 Apr 2018, 01:54
Re: Article: Inside the Worst U.S. Maritime Disaster in DecadesEd Popko9 Apr 2018, 11:35
Autonomous ships are coming.Gary LaPook24 Apr 2018, 17:20
Re: Autonomous ships are coming.Lu Abel24 Apr 2018, 18:52
Re: Autonomous ships are coming.Jeremy C25 Apr 2018, 06:23
Celestial Navigation is so simpleDon Seltzer28 Apr 2018, 15:47
Re: Celestial Navigation is so simpleGary LaPook28 Apr 2018, 16:39
Re: Celestial Navigation is so simpleGreg Rudzinski28 Apr 2018, 17:35
Re: Celestial Navigation is so simpleAlan S28 Apr 2018, 18:23
Re: Celestial SimulatorPhil Sadler1 Apr 2018, 02:56
Re: Celestial SimulatorPaul Hirose1 Apr 2018, 23:22
Re: Celestial SimulatorPhil Sadler3 Apr 2018, 02:44
Celestial Tools V5.6.9Stan K22 Apr 2018, 18:08
Celesticomp V instructionsBrian Lloyd15 Apr 2018, 15:05
Re: Celesticomp V instructionsJohn Carbone15 Apr 2018, 18:21
Re: Celesticomp V instructionsStan K15 Apr 2018, 23:43
Compassipedia online compass museumPaul Hirose23 Apr 2018, 21:41
Correction for diameter of the earthC Solo7 Apr 2018, 23:56
Re: Correction for diameter of the earthSean C8 Apr 2018, 04:43
Finding the EnduranceDavid C19 Apr 2018, 07:02
Ghost Ring vs. Sight TubeGreg Rudzinski14 Apr 2018, 19:49
Google Honors John Harrison with "Doodle"Sean C3 Apr 2018, 08:46
Re: Google Honors John Harrison with "Doodle"Brad Morris3 Apr 2018, 19:19
Re: Henning Umland's javascript web appBill Lionheart11 Apr 2018, 17:53
Henning Umland's spreadsheets.Bill Lionheart9 Apr 2018, 02:20
Re: Henning Umland's spreadsheets.Bill Lionheart10 Apr 2018, 14:06
Re: Henning Umland's spreadsheets.Paul Hirose10 Apr 2018, 19:56
Re: Henning Umland's spreadsheets.Brad Morris10 Apr 2018, 20:13
Re: Henning Umland's spreadsheets.Frank Reed11 Apr 2018, 16:39
HO-211 Hulbert Hinkel Jr.Robert VanderPol II20 Apr 2018, 03:42
Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayFrank Reed1 Apr 2018, 00:55
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayWilliam A1 Apr 2018, 20:27
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayDon Seltzer1 Apr 2018, 22:46
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayDon Seltzer1 Apr 2018, 23:58
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayWolfgang Köberer3 Apr 2018, 18:12
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayFrank Reed11 Apr 2018, 17:00
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayDon Seltzer11 Apr 2018, 21:53
John Karl's Celestial Navigation in the GPS AgeAonghus O Concheanainn29 Apr 2018, 21:34
Re: John Karl's Celestial Navigation in the GPS AgeRobert VanderPol II29 Apr 2018, 22:02
Re: John Karl's Celestial Navigation in the GPS AgeStan K29 Apr 2018, 23:00
Re: John Karl's Celestial Navigation in the GPS AgeRobert Bernecky30 Apr 2018, 13:48
Re: John Karl's Celestial Navigation in the GPS AgeAonghus O Concheanainn30 Apr 2018, 22:43
Re: John Karl's Celestial Navigation in the GPS AgeSean C30 Apr 2018, 23:45
JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.3 Apr 2018, 07:50
Re: JPL ephemeresis and Nautical Almanac - speed of light questionTony Oz3 Apr 2018, 10:20
Re: JPL ephemeresis and Nautical Almanac - speed of light questionMike Mayer3 Apr 2018, 12:24
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.3 Apr 2018, 12:50
Re: JPL ephemeresis and Nautical Almanac - speed of light questionPeter Monta3 Apr 2018, 12:51
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.3 Apr 2018, 13:14
Re: JPL ephemeresis and Nautical Almanac - speed of light questionTony Oz3 Apr 2018, 17:28
Re: JPL ephemeresis and Nautical Almanac - speed of light questionBrad Morris3 Apr 2018, 19:10
Re: JPL ephemeresis and Nautical Almanac - speed of light questionJohn D. Howard3 Apr 2018, 19:10
Re: JPL ephemeresis and Nautical Almanac - speed of light questionBrad Morris3 Apr 2018, 19:38
Re: JPL ephemeresis and Nautical Almanac - speed of light questionFrank Reed3 Apr 2018, 19:39
Re: JPL ephemeresis and Nautical Almanac - speed of light questionJohn D. Howard3 Apr 2018, 22:15
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.4 Apr 2018, 06:34
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.4 Apr 2018, 07:08
Re: JPL ephemeresis and Nautical Almanac - speed of light questionPaul Hughes4 Apr 2018, 09:34
Re: JPL ephemeresis and Nautical Almanac - speed of light questionFrank Reed4 Apr 2018, 16:29
Re: JPL ephemeresis and Nautical Almanac - speed of light questionPaul Hirose5 Apr 2018, 04:56
Lewis and Clark LunarsGreg Rudzinski10 Apr 2018, 15:48
Longest Straight Line Paths on Water or Land on the EarthRobert H. van Gent23 Apr 2018, 18:51
Re: Longest Straight Line Paths on Water or Land on the EarthAlexandre Eremenko23 Apr 2018, 20:21
Re: Longest Straight Line Paths on Water or Land on the EarthJohn D. Howard23 Apr 2018, 23:43
Re: Longest Straight Line Paths on Water or Land on the EarthRobert VanderPol II24 Apr 2018, 04:24
Re: Longest Straight Line Paths on Water or Land on the EarthPeter Hakel24 Apr 2018, 12:31
Lumpy lunar edgeEd Popko20 Apr 2018, 18:08
Lunar-Distance correction for OblatenessEd Popko6 Apr 2018, 14:12
Re: Lunar-Distance correction for OblatenessFrank Reed6 Apr 2018, 18:48
Re: Lunar-Distance correction for OblatenessEd Popko6 Apr 2018, 20:24
Re: Lunar-Distance correction for OblatenessSean C7 Apr 2018, 01:00
Re: Lunar-Distance correction for OblatenessFrank Reed7 Apr 2018, 02:10
Lunars: Altitude Accuracy (revisited)Ed Popko9 Apr 2018, 16:37
Lunars: this weekend at Mystic SeaportFrank Reed16 Apr 2018, 18:28
Re: Lunars: this weekend at Mystic SeaportFrank Reed16 Apr 2018, 18:40
Re: Lunars: this weekend at Mystic SeaportEd Popko17 Apr 2018, 00:59
Re: Lunars: this weekend at Mystic SeaportJeremy C17 Apr 2018, 12:26
Re: Lunars: this weekend at Mystic SeaportRobin Stuart18 Apr 2018, 13:21
Re: Lunars: this weekend at Mystic SeaportGreg Rudzinski18 Apr 2018, 16:59
Re: Lunars: this weekend at Mystic SeaportEd Popko18 Apr 2018, 17:00
Re: Lunars: this weekend at Mystic SeaportGreg Rudzinski19 Apr 2018, 04:00
Re: Lunars: this weekend at Mystic SeaportEd Popko19 Apr 2018, 10:15
Re: Lunars: this weekend at Mystic SeaportGreg Rudzinski19 Apr 2018, 15:33
Mark 7 Knee-Mounted Plotting BoardMiles B. Anderson30 Apr 2018, 20:43
Micrometer vernierFrank Reed17 Apr 2018, 17:03
Re: Micrometer vernierBob Goethe17 Apr 2018, 17:40
Re: Micrometer vernierDavid Fleming17 Apr 2018, 17:46
Re: Micrometer vernierFrank Reed17 Apr 2018, 18:00
Re: Micrometer vernierWilliam Edward Henry17 Apr 2018, 22:47
Re: Micrometer vernierMichael Bradley17 Apr 2018, 22:48
Re: Micrometer vernierBill Morris18 Apr 2018, 00:04
Re: Micrometer vernierDavid Pike18 Apr 2018, 11:35
Re: Micrometer vernierTony Oz18 Apr 2018, 12:55
Re: Micrometer vernierPosth P18 Apr 2018, 17:08
Re: Micrometer vernierPeter Monta18 Apr 2018, 22:07
Re: Micrometer vernierAlexandre Eremenko18 Apr 2018, 22:42
Re: Micrometer vernierTony Oz19 Apr 2018, 08:50
Mirages and refraction.Tony Oz14 Apr 2018, 22:34
Moon-rise/set with Air Almanac: how to?Tony Oz19 Apr 2018, 17:44
Re: Moon-rise/set with Air Almanac: how to?Robert Bernecky20 Apr 2018, 14:13
More accurate version of Pub 249 Vol 1 - is it needed?Rafal O.13 Apr 2018, 11:17
Re: More accurate version of Pub 249 Vol 1 - is it needed?Gary LaPook13 Apr 2018, 16:22
Re: More accurate version of Pub 249 Vol 1 - is it needed?David Pike13 Apr 2018, 20:07
Re: More accurate version of Pub 249 Vol 1 - is it needed?Gary LaPook14 Apr 2018, 05:42
Nautical Almanac, HO 229 or HO 249Lindsey Philpott3 Apr 2018, 05:34
Re: Nautical Almanac, HO 229 or HO 249Robert VanderPol II3 Apr 2018, 06:19
Re: Nautical Almanac, HO 229 or HO 249Lindsey Philpott3 Apr 2018, 21:32
Re: Nautical Almanac, HO 229 or HO 249John D. Howard3 Apr 2018, 22:38
Navigation ModulesAlan S28 Apr 2018, 20:41
Re: Navigation ModulesAntoine Couëtte29 Apr 2018, 06:34
Re: Navigation ModulesAntoine Couëtte29 Apr 2018, 10:24
Re: Navigation ModulesStan K29 Apr 2018, 15:12
Re: Navigation ModulesRobin Stuart29 Apr 2018, 17:47
Re: Navigation ModulesAndrew Nikitin30 Apr 2018, 12:43
Re: Navigation ModulesRobin Stuart30 Apr 2018, 19:21
New Edition of BowditchRommel John Miller11 Apr 2018, 20:02
Re: New Edition of BowditchKen Gebhart11 Apr 2018, 22:00
New York Times article on Viking Navigation and their use of "Sunstones"Ed Popko8 Apr 2018, 10:34
Re: New York Times article on Viking Navigation and their use of "Sunstones"Erland Andersen9 Apr 2018, 02:15
Re: New York Times article on Viking Navigation and their use of "Sunstones"Wolfgang Köberer9 Apr 2018, 07:12
Re: New York Times article on Viking Navigation and their use of "Sunstones"Tony Oz9 Apr 2018, 14:05
Re: New York Times article on Viking Navigation and their use of "Sunstones"Bob Goethe9 Apr 2018, 15:44
Norie 1819, Bowditch 1837, and a fine old Tamaya sextant on ebayFrank Reed28 Apr 2018, 01:49
Re: Norie 1819, Bowditch 1837, and a fine old Tamaya sextant on ebayDavid C28 Apr 2018, 03:48
Re: Norie 1819, Bowditch 1837, and a fine old Tamaya sextant on ebayFrank Reed28 Apr 2018, 04:19
Photo of horizonRobert VanderPol II8 Apr 2018, 15:27
Re: Photo of horizonSean C9 Apr 2018, 02:23
Re: Photo of horizonRobert VanderPol II9 Apr 2018, 13:46
Re: Polarized Sunglasses for CNGeoffrey Kolbe1 Apr 2018, 05:51
Re: Polarized Sunglasses for CNTony Oz1 Apr 2018, 22:02
Re: Polarized Sunglasses for CNGreg Rudzinski1 Apr 2018, 23:56
Quick Estimate of Sun DeclinationFrank Reed5 Apr 2018, 02:06
Re: Quick Estimate of Sun DeclinationHerman Dekker5 Apr 2018, 10:20
Re: Quick Estimate of Sun DeclinationFrank Reed5 Apr 2018, 18:49
Re: Quick Estimate of Sun DeclinationTony Oz5 Apr 2018, 18:52
Re: Quick Estimate of Sun Declination: analemmas?max mulhern5 Apr 2018, 15:12
Re: Quick Estimate of Sun Declination: analemmas?Frank Reed5 Apr 2018, 16:02
Re: Quick Estimate of Sun Declination: analemmas?max mulhern6 Apr 2018, 13:47
Re: Sail the tall ship OHP, April 25-May 10Frank Reed11 Apr 2018, 17:08
Second hand sextant adviceEdward Colonna6 Apr 2018, 15:36
Re: Second hand sextant adviceFrank Reed6 Apr 2018, 18:59
Re: Second hand sextant adviceChris Caswell6 Apr 2018, 19:06
Re: Second hand sextant adviceKen Gebhart6 Apr 2018, 19:10
Re: Second hand sextant adviceGreg Rudzinski6 Apr 2018, 20:10
Re: Second hand sextant adviceBruce Cutting7 Apr 2018, 21:37
Re: Second hand sextant adviceBill Morris7 Apr 2018, 21:50
Re: Second hand sextant adviceDavid C7 Apr 2018, 22:31
Re: Second hand sextant adviceJackson McDonald8 Apr 2018, 01:26
Re: Second hand sextant adviceAlan S8 Apr 2018, 04:47
Re: Second hand sextant adviceMichael Bradley8 Apr 2018, 09:18
Re: Second hand sextant adviceBob Goethe9 Apr 2018, 16:58
Sextant as hand luggage on a planeBill Lionheart15 Apr 2018, 16:20
Re: Sextant as hand luggage on a planeAlejandro Purgue15 Apr 2018, 18:28
Re: Sextant as hand luggage on a planeRobert Eno15 Apr 2018, 19:06
Re: Sextant as hand luggage on a planeJames F Campbell15 Apr 2018, 19:16
Re: Sextant as hand luggage on a planeRobin Stuart15 Apr 2018, 19:42
Re: Sextant as hand luggage on a planeJames F Campbell15 Apr 2018, 20:37
Re: Sextant as hand luggage on a planeAlan S15 Apr 2018, 22:37
Re: Sextant as hand luggage on a planeKen Gebhart16 Apr 2018, 17:26
Re: Sextant as hand luggage on a planeAlan S17 Apr 2018, 04:02
Sight reduction program for iPhonesChris Caswell22 Apr 2018, 13:13
Sight reduction using a calculator's POL (arctan2) keyRobert Bernecky2 Apr 2018, 13:37
Re: Sight reduction using a calculator's POL (arctan2) keyGreg Rudzinski2 Apr 2018, 23:49
Re: Sight reduction using a calculator's POL (arctan2) keyTony Oz3 Apr 2018, 08:49
Re: Sight reduction using a calculator's POL (arctan2) keyRobin Stuart3 Apr 2018, 12:30
Re: Sight reduction using a calculator's POL (arctan2) keyGreg Rudzinski3 Apr 2018, 17:27
Re: Sight reduction using a calculator's POL (arctan2) keyRobert Bernecky3 Apr 2018, 18:51
Re: Sight reduction using a calculator's POL (arctan2) keyLars Bergman3 Apr 2018, 21:40
Re: Sight reduction using a calculator's POL (arctan2) keyRobin Stuart4 Apr 2018, 11:57
Re: Sight reduction using a calculator's POL (arctan2) keyGreg Rudzinski5 Apr 2018, 04:19
Re: Sight reduction using a calculator's POL (arctan2) keyTony Oz5 Apr 2018, 13:07
Re: Sight reduction using a calculator's POL (arctan2) keyLars Bergman5 Apr 2018, 20:35
SNO-T for sale, £300Robert VanderPol II11 Apr 2018, 12:19
Re: SNO-T for sale, £300Örjan Sandström15 Apr 2018, 12:02
Re: SNO-T for sale, £300Robert VanderPol II15 Apr 2018, 21:10
Sumner Line SR by Martelli TableGreg Rudzinski11 Apr 2018, 18:03
The marquis de Chabert & the lunar distanceDucruy Jacques13 Apr 2018, 16:08
Re: Two Suns on the Horizon?Nick M1 Apr 2018, 12:38
Re: Two Suns on the Horizon?Frank Reed1 Apr 2018, 16:59
Re: Two Suns on the Horizon?Tony Oz1 Apr 2018, 21:50
Universal Plotting Sheet at High LatitudesBob Goethe5 Apr 2018, 11:36
Re: Upon Oceans endorsementWilliam A1 Apr 2018, 20:22
Video tour of our MoonEd Popko12 Apr 2018, 15:12
Re: Video tour of our MoonSean C13 Apr 2018, 02:13
Re: Viking Navigation and "Sunstones"Tony Oz22 Apr 2018, 07:33
Re: Viking Navigation and "Sunstones"Geoffrey Kolbe23 Apr 2018, 05:14
Wikipedia Article on "Stellar Triangulation"Fred Hebard9 Apr 2018, 15:54
Re: Wikipedia Article on "Stellar Triangulation"Frank Reed9 Apr 2018, 17:50
Re: Wikipedia Article on "Stellar Triangulation"Fred Hebard11 Apr 2018, 19:21
Re: WWII bubble sextants and radiumGary LaPook17 Apr 2018, 00:16

Index includes 190 messages.

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