Welcome to the NavList Message Boards.

NavList:

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

January, 2019 to December, 2019

Index includes 1972 messages. Sorted alphabetically by author.

                    
Re: Please recommend a good book or on-line courseA Grey28 May, 16:57
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechA Grey31 May, 20:37
What is a good sextant to buy?Abdul Khan1 Sep, 03:44
Re: What is a good sextant to buy?Abdul Khan2 Sep, 23:37
Re: Noticed by the James Caird Society!Adrian F8 Feb, 16:43
Re: The Appleyard Course and Distance ComputerAdrian F11 Mar, 17:51
Re: The Appleyard Course and Distance ComputerAdrian F17 Apr, 21:06
Re: ADMIN private messages plus a few other mattersAlan S7 Jan, 04:34
Leveling of artificial horizonAlan S8 Jan, 21:14
Various editions of Burton's navigation tablesAlan S20 Jan, 22:55
Re: In memoriam: Stan KleinAlan S28 Jan, 22:05
Re: Brown-Nassau CN PlotterAlan S12 Feb, 19:53
Re: Brown-Nassau CN PlotterAlan S16 Feb, 04:05
Re: CP-300/U Star FinderAlan S16 Feb, 04:58
Re: CP-300/U Star FinderAlan S16 Feb, 23:49
Re: Brown-Nassau CN PlotterAlan S17 Feb, 00:05
Contributing to NavList OperationsAlan S20 Feb, 20:51
Re: What sextant to buy ?Alan S21 Feb, 04:27
Re: Calculator "watch"Alan S26 Feb, 03:55
Re: CP-300/U Star FinderAlan S24 Mar, 02:13
Re: CP-300/U Star FinderAlan S26 Mar, 00:35
Re: Cpu-50A/PAlan S2 Apr, 03:24
Re: Brown-Nassau Spherical computerAlan S16 Apr, 03:13
Re: Android App for celestial navigation, free betaAlan S10 Jun, 01:31
Navigator's slide ruleAlan S24 Jun, 02:48
Re: CP-300/U USAF Star FinderAlan S26 Jun, 21:25
Re: Navigator's slide ruleAlan S1 Jul, 04:19
Re: Invert it: GPS as backup to primary celestial navigationAlan S4 Jul, 21:35
Re: Galileo Sat-Nav System Still Without ServiceAlan S16 Jul, 17:12
Re: We need a backup to GPSAlan S16 Jul, 17:14
Re: Home made artificial horizonAlan S16 Jul, 20:05
Re: We need a backup to GPSAlan S20 Jul, 02:57
Re: In memoriam: Stan KleinAlan S6 Aug, 01:08
Re: What is a good sextant to buy?Alan S3 Sep, 01:44
Re: What is a good sextant to buy?Alan S3 Sep, 02:32
Re: What is a good sextant to buy?Alan S9 Sep, 05:00
Re: In memoriam: Joel SilverbergAlan S10 Sep, 20:11
Ancient ObservatoriesAlbert Jacobs4 Jul, 17:15
Sarl-CPI sextantsAlberto Najar18 Mar, 22:01
Re: ... few other mattersalexander duytschaever8 Jan, 20:04
Re: Gyro sextantAlexandre Eremenko24 Jan, 16:57
Re: Gyro sextantAlexandre Eremenko25 Jan, 20:11
Historical tidesAlexandre Eremenko15 Feb, 23:52
Re: Historical tidesAlexandre Eremenko16 Feb, 00:47
Re: Historical tidesAlexandre Eremenko16 Feb, 04:19
Re: Historical tidesAlexandre Eremenko16 Feb, 13:12
Re: Historical tidesAlexandre Eremenko17 Feb, 13:37
Re: Historical tidesAlexandre Eremenko17 Feb, 22:55
Re: Historical tidesAlexandre Eremenko17 Feb, 23:10
Re: Ebony OctantAlexandre Eremenko12 Mar, 13:09
Re: Index mirror typeAlexandre Eremenko19 Mar, 00:10
Re: Index mirror typeAlexandre Eremenko19 Mar, 00:16
Re: Mirror recoatingAlexandre Eremenko26 Mar, 00:04
Re: Mirror recoatingAlexandre Eremenko26 Mar, 19:02
Re: Mirror recoatingAlexandre Eremenko26 Mar, 19:34
Re: Mirror recoatingAlexandre Eremenko26 Mar, 21:09
Re: Troughton and Simms SextantAlexandre Eremenko8 Apr, 01:53
Re: Star to Star Distance Sextant CalibrationAlexandre Eremenko10 Apr, 23:04
Re: Mariner's astrolabe from Museo Naval de MadridAlexandre Eremenko11 Apr, 10:29
Re: Comet Donati above Paris 1858Alexandre Eremenko21 Apr, 00:53
Re: Star-to-star distance for sextant calibration?Alexandre Eremenko21 May, 12:41
Re: Easy star-to-star distance correctionsAlexandre Eremenko22 May, 20:30
Re: Easy star-to-star distance correctionsAlexandre Eremenko22 May, 22:18
Re: Lost at Sea with a sextant puzzleAlexandre Eremenko23 Jun, 05:40
Re: Lost at Sea with a sextant puzzleAlexandre Eremenko23 Jun, 06:09
Re: Ancient ObservatoriesAlexandre Eremenko4 Jul, 19:58
Re: What is a good sextant to buy?Alexandre Eremenko4 Sep, 01:01
Re: Multiplication by addition of logsAlexandre Eremenko4 Sep, 11:53
Mariner's astrolabe from Museo Naval de MadridAndrew Nikitin11 Apr, 04:32
Re: Mariner's astrolabe from Museo Naval de MadridAndrew Nikitin12 Apr, 14:18
... few other mattersAndrés Ruiz7 Jan, 18:50
Re: ... few other mattersAndrés Ruiz8 Jan, 13:28
Re: ... few other mattersAndrés Ruiz9 Jan, 07:23
Re: World Magnetic Model updateAndrés Ruiz11 Jan, 07:17
Re: Declination magneticAndrés Ruiz12 Jan, 20:27
Re: Finding great circle apex?Andrés Ruiz18 Jan, 07:54
Re: Finding great circle apex?Andrés Ruiz18 Jan, 08:02
Re: New Year's resolutionsAndrés Ruiz24 Jan, 08:29
Re: In memoriam: Stan KleinAndrés Ruiz28 Jan, 06:55
Moon, Venus and Jupiter todayAndrés Ruiz1 Feb, 07:21
Re: Is most probable position (MPP) a dangerous misnomer?Andrés Ruiz5 Feb, 09:35
Re: Moon, Venus and Jupiter todayAndrés Ruiz5 Feb, 19:24
Re: Latitude by PolarisAndrés Ruiz11 Feb, 07:34
Re: Latitude at Noon and Midnight.Andrés Ruiz15 Feb, 07:52
Re: Examples of cocked hat far from equilateralAndrés Ruiz15 Feb, 07:55
Re: Latitude at Noon and Midnight.Andrés Ruiz15 Feb, 08:00
Re: Latitude at Noon and Midnight.Andrés Ruiz15 Feb, 17:13
Re: Historical tidesAndrés Ruiz16 Feb, 10:06
Re: Polaris - changes in SHA and DeclinationAndrés Ruiz22 Feb, 19:12
An analytical solution of the two star sight problem of celestial navigationAndrés Ruiz4 Mar, 14:33
Re: An analytical solution of the two star sight problem of celestial navigationAndrés Ruiz5 Mar, 20:17
Re: An analytical solution of the two star sight problem of celestial navigationAndrés Ruiz7 Mar, 19:53
Re: An analytical solution of the two star sight problem of celestial navigationAndrés Ruiz8 Mar, 11:21
Ellipse of Confidence in position findingAndrés Ruiz9 Mar, 15:00
Re: 3D Navigation software questionAndrés Ruiz9 Mar, 15:11
Re: Ellipse of Confidence in position findingAndrés Ruiz11 Mar, 08:15
Re: Ellipse of Confidence in position findingAndrés Ruiz14 Mar, 13:57
Re: Ellipse of Confidence in position findingAndrés Ruiz20 Mar, 07:26
Re: Ellipse of Confidence in position findingAndrés Ruiz20 Mar, 07:57
Re: Ellipse of Confidence in position findingAndrés Ruiz21 Mar, 08:44
Re: Zenith FixesAndrés Ruiz22 Mar, 10:01
Re: Zenith FixesAndrés Ruiz25 Mar, 14:04
Re: Zenith FixesAndrés Ruiz26 Mar, 09:02
Re: Mariner's astrolabe from Museo Naval de MadridAndrés Ruiz11 Apr, 06:21
Re: Star to Star Distance Sextant CalibrationAndrés Ruiz11 Apr, 07:23
Re: Single-body fix (at mer-pass): some questionsAndrés Ruiz8 May, 06:52
Re: Single-body fix (at mer-pass): some questionsAndrés Ruiz9 May, 07:01
Re: Deneb, Altair and SaturnAndrés Ruiz16 May, 13:04
Re: Celestial statistical fixAndrés Ruiz19 May, 09:39
Re: Deneb, Altair and SaturnAndrés Ruiz19 May, 09:44
Das Boot film and sextantAndrés Ruiz20 May, 12:26
Star-to-star distances: apps, software, spreadsheetsAndrés Ruiz22 May, 09:52
Navigation books in FrenchAndrés Ruiz5 Jun, 12:32
Longitude by Lunar Distance (Online article)Andrés Ruiz7 Jun, 12:53
Re: Azimuth graphAndrés Ruiz21 Jun, 09:35
Re: Lunars "data collection form"Andrés Ruiz21 Jun, 10:42
SAR-search-patterns ApplicationAndrés Ruiz5 Jul, 10:33
Re: GMT of lunar altitudes when possible?Andrés Ruiz11 Jul, 12:58
Re: ADMIN private messages plus a few other mattersAntoine Couëtte7 Jan, 09:00
Re: ADMIN private messages plus a few other mattersAntoine Couëtte7 Jan, 16:03
Re: Flying to AntarcticaAntoine Couëtte21 Jan, 11:07
Re: Flying to AntarcticaAntoine Couëtte22 Jan, 00:41
Re: Moon, Venus and Jupiter todayAntoine Couëtte1 Feb, 08:23
Re: SofaJpl page is downAntoine Couëtte11 May, 10:06
Deneb, Altair and SaturnAntoine Couëtte15 May, 04:12
Re: Deneb, Altair and SaturnAntoine Couëtte16 May, 18:03
Re: Deneb, Altair and SaturnAntoine Couëtte17 May, 08:23
Re: Astronomical panorama location and dateAntoine Couëtte19 May, 11:13
Re: Astronomical panorama location and dateAntoine Couëtte19 May, 12:48
Re: Astronomical panorama location and dateAntoine Couëtte20 May, 20:29
Re: Astronomical panorama location and dateAntoine Couëtte21 May, 10:52
Re: Lunar distance presetting exerciseAntoine Couëtte27 May, 07:58
Re: Navigation books in FrenchAntoine Couëtte5 Jun, 17:10
Multiplication by addition of logsAshley Betts4 Sep, 03:07
Re: Multiplication by addition of logsAshley Betts5 Sep, 09:04
Re: Multiplication by addition of logsAshley Betts5 Sep, 09:09
Re: What is a good sextant to buy?Bill B3 Sep, 05:03
Short Term Proper MotionBill Bertrand9 Mar, 16:19
Re: Short Term Proper MotionBill Bertrand11 Mar, 15:54
Re: Radio Time signalsBill Lionheart10 Jan, 11:51
Examples of cocked hat far from equilateralBill Lionheart4 Feb, 10:07
Re: Is most probable position (MPP) a dangerous misnomer?Bill Lionheart4 Feb, 12:49
Re: Examples of cocked hat far from equilateralBill Lionheart5 Feb, 21:37
Re: Is most probable position (MPP) a dangerous misnomer?Bill Lionheart5 Feb, 22:22
Re: What sextant to buy ?Bill Lionheart6 Feb, 09:43
Taking more sights for one star when triangle not equilateralBill Lionheart16 Feb, 20:00
Re: Magnetic variation changing faster than anticipatedBill Lionheart25 Feb, 08:03
Re: GPS for chickens and spinachBill Lionheart25 Feb, 09:59
Re: Magnetic variation changing faster than anticipatedBill Lionheart28 Feb, 07:13
Re: What level of english skills is needed for safe navigation?Bill Lionheart1 Mar, 09:32
Re: An analytical solution of the two star sight problem of celestial navigationBill Lionheart5 Mar, 11:50
Re: An analytical solution of the two star sight problem of celestial navigationBill Lionheart5 Mar, 15:31
Re: An analytical solution of the two star sight problem of celestial navigationBill Lionheart9 Mar, 13:51
Re: Ellipse of Confidence in position findingBill Lionheart10 Mar, 18:36
Re: Ellipse of Confidence in position findingBill Lionheart13 Mar, 07:51
Re: Ellipse of Confidence in position findingBill Lionheart15 Mar, 08:58
Re: Mercury is the closest planet, on average...Bill Lionheart16 Mar, 16:16
Re: Ellipse of Confidence in position findingBill Lionheart18 Mar, 07:22
Obtuse versus acute cocked hatBill Lionheart21 Mar, 08:07
Re: Obtuse versus acute cocked hatBill Lionheart21 Mar, 21:14
Re: Obtuse versus acute cocked hatBill Lionheart26 Mar, 10:32
Robin Stuart's paper "Probabilities in a Gaussian Cocked Hat"Bill Lionheart30 Mar, 12:48
Re: Robin Stuart's paper "Probabilities in a Gaussian Cocked Hat"Bill Lionheart31 Mar, 08:18
Constructing the axes of the sum of squares ellipseBill Lionheart9 Apr, 10:18
Re: Wikipedia article on Winslow Homer's "Eight Bells"Bill Lionheart9 Apr, 10:32
Re: Wikipedia article on Winslow Homer's "Eight Bells"Bill Lionheart9 Apr, 18:26
Re: Northern Limits of Magnetic Compass UsefulnessBill Lionheart10 Apr, 14:50
Re: Consistent "away" intercepts. Why?Bill Lionheart2 May, 15:49
Re: Consistent "away" intercepts. Why?Bill Lionheart4 May, 19:29
Re: A good clock for a few billion yearsBill Lionheart6 May, 09:03
Re: We need a backup to GPSBill Lionheart16 Jul, 15:36
Re: Which Cocked Hat?Bill Lionheart31 Jul, 11:51
Re: Which Cocked Hat?Bill Lionheart2 Aug, 22:51
Re: Which Cocked Hat?Bill Lionheart4 Aug, 13:25
The Geometry of Elliptical Probability Contours for a Fix using Multiple Lines of PositionBill Lionheart14 Aug, 15:12
Re: The Geometry of Elliptical Probability Contours for a Fix using Multiple Lines of PositionBill Lionheart15 Aug, 09:35
Is this a "digital sextant"?Bill Lionheart16 Aug, 14:33
Re: The Geometry of Elliptical Probability Contours for a Fix using Multiple Lines of PositionBill Lionheart17 Aug, 12:57
Re: LORAN over boardBill Lionheart20 Aug, 21:32
Re: Navigation articles on WikipediaBill Lionheart29 Aug, 16:07
Re: GPS Time and Network TimeBill Morris13 Jan, 22:18
Gyro sextantBill Morris23 Jan, 22:38
Re: Gyro sextantBill Morris25 Jan, 21:32
Re: Gyro sextantBill Morris26 Jan, 21:11
Re: Compatibility Freiberger / SNO-TBill Morris1 Feb, 03:26
Re: Gyro sextantBill Morris2 Feb, 22:55
Re: Gyro sextantBill Morris7 Feb, 02:54
Re: Gyro sextantBill Morris7 Feb, 03:13
Re: Gyro sextantBill Morris13 Feb, 03:45
Re: Ebony OctantBill Morris12 Mar, 21:04
Re: Mirror recoatingBill Morris26 Mar, 03:49
Re: Troughton and Simms SextantBill Morris10 Apr, 04:48
Re: Sun Compass-Interesting UseBill Morris18 Apr, 22:58
Re: Troughton and Simms SextantBill Morris24 Apr, 22:00
Re: C&P bubble sextant - practical issuesBill Morris17 Jun, 02:53
Re: Mirror AH - safety firstBill Morris24 Jul, 21:21
Re: Moon, Venus and Jupiter todayBill Ritchie10 Feb, 02:04
Astron v2.1 release.Bill Ritchie23 Mar, 14:06
Re: Lost at Sea with a sextant puzzleBill Ritchie24 Jun, 20:25
Re: GMT of lunar altitudes when possible?Bill Ritchie8 Jul, 08:55
Re: Historical tidesBob Crawley17 Feb, 11:38
Coordinate precisionBob Crawley2 Jul, 08:25
Re: Leveling of artificial horizonBob Goethe9 Jan, 01:14
Re: Moby Dick TalesBob Goethe9 Jan, 22:35
GPS Time and Network TimeBob Goethe10 Jan, 18:54
Re: GPS Time and Network TimeBob Goethe10 Jan, 20:03
Re: GPS Time and Network TimeBob Goethe10 Jan, 20:21
Re: GPS Time and Network TimeBob Goethe13 Jan, 23:12
Re: GPS Time and Network TimeBob Goethe15 Jan, 17:52
Northern Limits of Magnetic Compass UsefulnessBob Goethe2 Feb, 19:06
Re: Examples of cocked hat far from equilateralBob Goethe4 Feb, 18:31
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe4 Feb, 22:32
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe5 Feb, 21:52
Re: ADMIN NavList on small screensBob Goethe6 Feb, 12:40
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe6 Feb, 18:26
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe6 Feb, 20:51
Re: First Point of Aries newbie questionBob Goethe5 Mar, 19:37
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe9 Apr, 19:58
Re: Northern Limits of Magnetic Compass UsefulnessBob Goethe10 Apr, 19:57
Re: Sun Compass-Interesting UseBob Goethe20 Apr, 02:43
Naval ChronicleBob Goethe21 May, 20:59
Circumference of the Earth, 240BCBob Goethe20 Jun, 19:04
Re: Navigator's slide ruleBob Goethe24 Jun, 19:09
Lightning strike on a mastBob Goethe9 Jul, 18:03
American Practical Navigator, Bowditch 2019Bob Goethe3 Aug, 18:44
GPS Anti-Spoof IssueBob Goethe8 Aug, 13:38
Re: A novel material for mirror AH ?Bob Goethe15 Aug, 21:05
Re: Optimal HoE?Bob Goethe19 Aug, 19:25
Re: Shoot a lunar tomorrowBob Goethe24 Aug, 21:46
Re: Shoot a lunar tomorrowBob Goethe24 Aug, 22:51
GPS Spoofing and TimeBob Goethe26 Aug, 15:51
Re: GPS Spoofing and TimeBob Goethe27 Aug, 14:19
Re: GPS Spoofing and TimeBob Goethe27 Aug, 21:34
Harold Gatty's KamalBob Goethe30 Aug, 00:31
Re: What is a good sextant to buy?Bob Goethe3 Sep, 06:26
Zero-Altitude ShotBob Goethe4 Sep, 02:24
Re: Zero-Altitude ShotBob Goethe4 Sep, 12:40
Re: Zero-Altitude ShotBob Goethe12 Sep, 06:12
Re: ADMIN private messages plus a few other mattersBrad Morris7 Jan, 15:52
Re: Sighting errorsBrad Morris7 Jan, 19:20
Re: ADMIN private messages plus a few other mattersBrad Morris7 Jan, 19:32
Re: Sighting errorsBrad Morris7 Jan, 23:08
Re: Sighting errorsBrad Morris8 Jan, 04:43
Re: Leveling of artificial horizonBrad Morris8 Jan, 23:09
Noticed by the James Caird Society!Brad Morris9 Jan, 14:46
Re: Noticed by the James Caird Society!Brad Morris9 Jan, 23:09
Re: Moby Dick TalesBrad Morris10 Jan, 14:40
Re: Moby Dick TalesBrad Morris10 Jan, 20:29
Re: Moby Dick TalesBrad Morris11 Jan, 19:07
Re: Moby Dick TalesBrad Morris12 Jan, 15:11
Re: Moby Dick TalesBrad Morris13 Jan, 00:50
Re: Earth's Magnetic North Pole is moving more and more quicklyBrad Morris13 Jan, 20:26
Re: Life on the OceanBrad Morris14 Jan, 17:13
Re: Life on the OceanBrad Morris14 Jan, 18:07
Re: Life on the OceanBrad Morris14 Jan, 21:13
Re: Spur of the moment long by chronBrad Morris15 Jan, 11:35
Re: Followup on USS Fitzgerald CollisionBrad Morris15 Jan, 18:17
Re: Spur of the moment long by chronBrad Morris16 Jan, 22:45
Re: Oh No! Fundamental flaw in celestial navigation revealed!Brad Morris17 Jan, 19:02
Re: Finding great circle apex?Brad Morris19 Jan, 17:45
Re: Why no airtraffic over Antarctica?Brad Morris19 Jan, 22:38
Re: Why no airtraffic over Antarctica?Brad Morris20 Jan, 17:30
Flying to AntarcticaBrad Morris20 Jan, 17:38
Re: Flying to AntarcticaBrad Morris20 Jan, 19:50
Re: Flying to AntarcticaBrad Morris20 Jan, 20:30
Re: Flying to AntarcticaBrad Morris21 Jan, 01:30
Re: Flying to AntarcticaBrad Morris21 Jan, 02:56
Re: Flying to AntarcticaBrad Morris21 Jan, 16:12
Re: A DIY Faraday cage: caveats and hints?Brad Morris22 Jan, 18:23
Re: A DIY Faraday cage: caveats and hints?Brad Morris22 Jan, 22:47
Re: CNAV and Rearranging the mass of the earth's water?Brad Morris23 Jan, 17:19
Re: Live AIS trackingBrad Morris23 Jan, 18:14
Re: Live AIS trackingBrad Morris24 Jan, 00:04
Re: Gyro sextantBrad Morris24 Jan, 00:29
Re: Gyro sextantBrad Morris24 Jan, 01:39
Re: Gyro sextantBrad Morris24 Jan, 22:17
Re: Gyro sextantBrad Morris26 Jan, 22:38
Re: Gyro sextantBrad Morris27 Jan, 03:57
Re: Gyro sextantBrad Morris27 Jan, 16:23
Re: Sun and moon at the North Pole.Brad Morris29 Jan, 17:16
Re: Sun and moon at the North Pole.Brad Morris29 Jan, 17:26
Re: Sun and moon at the North Pole.Brad Morris30 Jan, 00:48
Re: Sun and moon at the North Pole.Brad Morris30 Jan, 02:13
Re: Sun and moon at the North Pole.Brad Morris30 Jan, 04:57
Re: Sun and moon at the North Pole.Brad Morris30 Jan, 18:28
Re: Any reading suggestions?Brad Morris1 Feb, 15:26
Re: Pointless? Optimisation - Intercept PlottingBrad Morris2 Feb, 00:02
Re: Northern Limits of Magnetic Compass UsefulnessBrad Morris2 Feb, 20:04
Re: ADMIN NavList on small screensBrad Morris6 Feb, 10:28
Re: ADMIN NavList on small screensBrad Morris6 Feb, 10:32
Re: ADMIN NavList on small screensBrad Morris6 Feb, 16:20
Re: What sextant to buy ?Brad Morris6 Feb, 17:35
Re: Noticed by the James Caird Society!Brad Morris9 Feb, 15:38
Search Party Reaches Last Known Endurance LocationBrad Morris11 Feb, 00:20
Re: Search Party Reaches Last Known Endurance LocationBrad Morris11 Feb, 16:29
Re: Time zone sign conventionsBrad Morris11 Feb, 16:52
Re: Search Party Reaches Last Known Endurance LocationBrad Morris12 Feb, 03:34
Re: The Dunlap Sunrise Sunset ComputerBrad Morris12 Feb, 20:25
Re: Search Party Reaches Last Known Endurance LocationBrad Morris12 Feb, 22:31
Re: Search Party Reaches Last Known Endurance LocationBrad Morris13 Feb, 00:26
Re: Time zone sign conventionsBrad Morris13 Feb, 04:03
Re: Brown-Nassau CN PlotterBrad Morris13 Feb, 15:02
Re: The Dunlap Sunrise Sunset ComputerBrad Morris13 Feb, 19:25
BBC News: Search for Shackleton's lost Endurance ship called off.Brad Morris14 Feb, 18:01
Re: CP-300/U Star FinderBrad Morris16 Feb, 17:04
Re: Celestial Navigation in 1866Brad Morris17 Feb, 07:03
Re: CP-300/U Star FinderBrad Morris18 Feb, 18:09
Re: CP-300/U Star FinderBrad Morris18 Feb, 20:19
Re: Iterative Lunar methodBrad Morris20 Feb, 21:05
Re: Lunar with Davis MKIII Sextant?Brad Morris20 Feb, 23:38
Re: Lunar with Davis MKIII Sextant?Brad Morris21 Feb, 00:24
Re: GPS rolloverBrad Morris23 Feb, 17:42
Re: GPS for chickens and spinachBrad Morris24 Feb, 16:56
Re: What level of english skills is needed for safe navigation?Brad Morris1 Mar, 00:51
Re: Dip ShortBrad Morris7 Mar, 16:18
Re: An analytical solution of the two star sight problem of celestial navigationBrad Morris9 Mar, 12:06
Re: 3D Navigation software questionBrad Morris9 Mar, 14:30
Re: An analytical solution of the two star sight problem of celestial navigationBrad Morris9 Mar, 21:05
Unbounded RunawayBrad Morris10 Mar, 16:51
Re: Corrections for latitude when taking sightsBrad Morris11 Mar, 13:51
Re: Corrections for latitude when taking sightsBrad Morris12 Mar, 03:33
Re: Old stone walls record the changing location of magnetic northBrad Morris12 Mar, 17:48
Re: Old stone walls record the changing location of magnetic northBrad Morris12 Mar, 18:05
Re: Old stone walls record the changing location of magnetic northBrad Morris12 Mar, 20:56
Re: Corrections for latitude when taking sightsBrad Morris13 Mar, 02:19
Re: Corrections for latitude when taking sightsBrad Morris13 Mar, 19:29
Re: Corrections for latitude when taking sightsBrad Morris13 Mar, 20:56
Re: Corrections for latitude when taking sightsBrad Morris14 Mar, 00:57
Re: Possible GPS Date Rollover problems week of April 6, 2019Brad Morris27 Mar, 14:38
Re: Cpu-50A/PBrad Morris27 Mar, 14:40
Re: Cpu-50A/PBrad Morris27 Mar, 22:10
Re: Cpu-50A/PBrad Morris27 Mar, 22:15
Re: Possible GPS Date Rollover problems week of April 6, 2019Brad Morris7 Apr, 00:31
Re: Troughton and Simms SextantBrad Morris8 Apr, 02:42
Re: Comet Donati above Paris 1858Brad Morris21 Apr, 16:52
Re: Early Air Navigation with RDFBrad Morris22 Apr, 03:03
Re: Early Air Navigation with RDFBrad Morris23 Apr, 00:47
Re: Titanic's last starsBrad Morris1 May, 17:10
Re: Titanic's last starsBrad Morris2 May, 00:41
Re: Titanic's last starsBrad Morris2 May, 13:43
Re: Congratulations on the Victory Day!Brad Morris8 May, 21:53
Re: Modern Celestial at Mystic Seaport, May 18-19Brad Morris12 May, 02:00
Re: Modern Celestial at Mystic Seaport, May 18-19Brad Morris12 May, 09:57
Re: Fogging OpticsBrad Morris14 May, 04:46
Re: UL vs LL: which is which when an artificial horizon is involved?Brad Morris14 May, 17:49
Re: UL vs LL: which is which when an artificial horizon is involved?Brad Morris15 May, 19:14
Re: Astronomical panorama location and dateBrad Morris18 May, 18:33
Re: Astronomical panorama location and dateBrad Morris20 May, 19:06
Re: Das Boot film and sextantBrad Morris20 May, 19:07
Re: Star-to-star distance for sextant calibration?Brad Morris21 May, 02:23
Re: Mark-IX-A bubble sextant calibration reportBrad Morris23 May, 02:37
Re: Which stars are circumpolar at 52 N?Brad Morris29 May, 17:44
Re: Please recommend a good book or on-line courseBrad Morris29 May, 18:09
Re: Calculator forensicsBrad Morris29 May, 18:32
Re: Henry Hughes Sextant (No. 5154)Brad Morris29 May, 18:45
Re: Henry Hughes Sextant (No. 5154)Brad Morris30 May, 02:45
Re: Calculator forensicsBrad Morris31 May, 02:00
Re: Calculators, cosines, and floating point computationBrad Morris3 Jun, 14:45
Re: Calculators, cosines, and floating point computationBrad Morris3 Jun, 16:23
Re: Calculators, cosines, and floating point computationBrad Morris4 Jun, 17:09
Re: Calculators, cosines, and floating point computationBrad Morris4 Jun, 18:41
Re: Asymmetry in i.c.Brad Morris8 Jun, 04:19
Engineer of Apollo Sextant, in the newsBrad Morris9 Jun, 13:35
Re: Artificial horizon plexiglass windscreen and refraction?Brad Morris9 Jun, 13:50
Re: Please recommend a good book or on-line courseBrad Morris10 Jun, 01:33
Re: Android App for celestial navigation, free betaBrad Morris10 Jun, 02:37
Re: Calculators, cosines, and floating point computationBrad Morris10 Jun, 13:50
Re: Calculators, cosines, and floating point computationBrad Morris10 Jun, 18:39
Re: Using the Anti Spoofing AppBrad Morris11 Jun, 18:46
Re: How to round?Brad Morris12 Jun, 19:37
Re: How to round?Brad Morris13 Jun, 01:02
Re: How to round?Brad Morris13 Jun, 16:55
Re: How to round?Brad Morris13 Jun, 23:27
Re: How to round?Brad Morris14 Jun, 18:23
Re: Lunars "data collection form"Brad Morris21 Jun, 03:11
Re: Peculiar definition of sun set/riseBrad Morris22 Jun, 02:58
Re: Lost at Sea with a sextant puzzleBrad Morris23 Jun, 03:46
Re: Lost at Sea with a sextant puzzleBrad Morris23 Jun, 19:27
Re: Lost at Sea with a sextant puzzleBrad Morris24 Jun, 05:25
Re: Lost at Sea with a sextant puzzleBrad Morris25 Jun, 00:00
Re: Lost at Sea with a sextant puzzleBrad Morris25 Jun, 18:53
Re: CP-300/U USAF Star FinderBrad Morris25 Jun, 19:02
Re: CP-300/U USAF Star FinderBrad Morris26 Jun, 19:31
Re: CP-300/U USAF Star FinderBrad Morris27 Jun, 17:44
Re: CP-300/U USAF Star FinderBrad Morris29 Jun, 00:13
Re: CP-300/U USAF Star FinderBrad Morris29 Jun, 00:40
Re: Indian Astronomical Ephemeris as a "Retro Almanac"Brad Morris29 Jun, 00:55
Re: Constellations in "Moana"Brad Morris29 Jun, 14:32
Re: Constellations in "Moana"Brad Morris29 Jun, 17:37
Re: CP-300/U USAF Star FinderBrad Morris30 Jun, 14:19
AzimuthsBrad Morris30 Jun, 18:59
Re: CP-300/U USAF Star FinderBrad Morris30 Jun, 19:08
Re: AzimuthsBrad Morris2 Jul, 16:24
Re: Coordinate precisionBrad Morris3 Jul, 04:40
Re: AzimuthsBrad Morris3 Jul, 16:45
Coordinate precision // SARBrad Morris4 Jul, 15:19
Re: Coordinate precision // SARBrad Morris4 Jul, 20:27
Re: Coordinate precision // SARBrad Morris4 Jul, 20:28
Re: Coordinate precision // SARBrad Morris4 Jul, 21:02
Re: SAR-search-patterns ApplicationBrad Morris5 Jul, 16:36
Re: GMT of lunar altitudes when possible?Brad Morris8 Jul, 20:51
Re: Lightning strike on a mastBrad Morris9 Jul, 19:20
Starpath Article GMT Lunar AltitudesBrad Morris10 Jul, 22:46
Re: SAR-search-patterns ApplicationBrad Morris17 Jul, 00:16
Re: SAR-search-patterns ApplicationBrad Morris17 Jul, 04:05
Re: Apollo SextantBrad Morris20 Jul, 14:07
Re: Old Garmin GPS deviceBrad Morris22 Jul, 19:06
Re: Accuracy: main shades vs eyepiece shades?Brad Morris25 Jul, 14:43
Re: Accuracy: main shades vs eyepiece shades?Brad Morris25 Jul, 22:03
Re: Accuracy: main shades vs eyepiece shades?Brad Morris26 Jul, 19:50
Re: Accuracy: main shades vs eyepiece shades?Brad Morris27 Jul, 02:59
Re: Accuracy: main shades vs eyepiece shades?Brad Morris27 Jul, 19:08
Re: Parallel Sailing questionBrad Morris1 Aug, 18:36
Re: Which Cocked Hat?Brad Morris4 Aug, 03:57
Re: Sextant octant rubber eyepad preservationBrad Morris15 Aug, 18:12
Re: A novel material for mirror AH ?Brad Morris15 Aug, 18:20
Re: Is this a "digital sextant"?Brad Morris16 Aug, 17:42
Re: Optimal HoE?Brad Morris19 Aug, 18:46
Re: Optimal HoE?Brad Morris20 Aug, 19:40
Re: Optimal HoE?Brad Morris20 Aug, 19:46
Re: LORAN over boardBrad Morris20 Aug, 19:49
Re: Side error asymmetryBrad Morris21 Aug, 16:55
Re: The art of large vessel navigationBrad Morris23 Aug, 00:35
Re: Navigator, Dead Reckoning bagBrad Morris26 Aug, 18:45
Re: Age of Sail Navigation Weekend and a Lunars DayBrad Morris16 Sep, 17:16
Azimuth graphBrian Bagnetto20 Jun, 23:31
Re: Spur of the moment long by chronBrian Walton15 Jan, 02:43
Re: Life on the OceanBrian Walton15 Jan, 04:16
Re: Spur of the moment long by chronBrian Walton16 Jan, 05:47
Re: Life on the OceanBrian Walton22 Jan, 04:40
Re: T Hav Doniol Sumner LOP ExampleBrian Walton6 Mar, 04:12
Re: T Hav Doniol Sumner LOP ExampleBrian Walton8 Mar, 14:11
Re: T Hav Doniol Sumner LOP ExampleBrian Walton10 Mar, 06:31
Re: Corrections for latitude when taking sightsBrian Walton12 Mar, 07:31
Re: Corrections for latitude when taking sightsBrian Walton13 Mar, 04:15
Re: Corrections for latitude when taking sightsBrian Walton13 Mar, 22:07
Re: Reeds versine formulasBrian Walton16 Apr, 11:21
Re: I.C. and sunspotBrian Walton14 May, 03:36
Re: Constellations in "Moana"Brian Walton30 Jun, 06:15
Re: AzimuthsBrian Walton1 Jul, 05:23
Re: AzimuthsBrian Walton3 Jul, 04:46
Re: We need a backup to GPSBrian Walton21 Jul, 05:08
Re: An artificial horizon eclipse sightBrian Walton6 Aug, 10:33
Re: An artificial horizon eclipse sightBrian Walton10 Aug, 14:18
Re: An artificial horizon eclipse sightBrian Walton12 Aug, 01:10
Re: Live AIS trackingBruce Cutting23 Jan, 16:41
Re: Gyro sextantBruce Cutting27 Jan, 00:33
Re: Gyro sextantBruce Cutting27 Jan, 00:47
Re: What sextant to buy ?Bruce Cutting6 Feb, 16:20
Re: Brown-Nassau CN PlotterBruce Cutting13 Feb, 18:44
Re: What sextant to buy ?Bruce Cutting20 Feb, 04:16
Re: Lunar with Davis MKIII Sextant?Bruce Cutting20 Feb, 23:21
Re: What sextant to buy ?Bruce Cutting22 Feb, 00:39
Re: Donald Crowhurst shooting the SunBruce Cutting26 Feb, 18:25
Re: Iterative Lunar methodBruce Cutting27 Feb, 16:30
Re: What sextant to buy ?Bruce Cutting1 Mar, 00:43
Re: An analytical solution of the two star sight problem of celestial navigationBruce Cutting5 Mar, 16:27
Re: GPS Anti Spoof app updateBruce Cutting2 Apr, 20:11
Re: SNO-T for export ?Bruce Cutting3 May, 17:40
Re: SNO-T for export ?Bruce Cutting4 May, 17:05
Re: Navigation articles on WikipediaBruce Cutting29 Aug, 16:16
Re: What is a good sextant to buy?Bruce Cutting3 Sep, 21:36
Re: What is a good sextant to buy?Bruce Cutting4 Sep, 18:28
Re: Age of Sail Navigation Weekend and a Lunars DayBruce Cutting16 Sep, 01:45
Re: Welcome to the New YearBruce J. Pennino2 Jan, 02:06
Re: It's 2019...Bruce J. Pennino2 Jan, 14:43
Moby Dick TalesBruce J. Pennino9 Jan, 22:02
Re: Moby Dick TalesBruce J. Pennino10 Jan, 14:22
Re: Earth's Magnetic North Pole is moving more and more quicklyBruce J. Pennino14 Jan, 14:18
Re: Life on the OceanBruce J. Pennino15 Jan, 14:41
Re: Moby Dick TalesBruce J. Pennino15 Jan, 23:58
Re: What sextant to buy ?Bruce J. Pennino6 Feb, 15:33
Re: ADMIN: NavList Operations ContributionsBruce J. Pennino13 Feb, 16:43
Re: Old stone walls record the changing location of magnetic northBruce J. Pennino12 Mar, 23:36
Sun Compass-Interesting UseBruce J. Pennino12 Apr, 03:14
Re: Sun Compass-Interesting UseBruce J. Pennino19 Apr, 13:04
Re: Please recommend a good book or on-line courseBruce J. Pennino29 May, 13:59
Re: What is a good sextant to buy?Bruce J. Pennino4 Sep, 13:44
SNO-T for export ?Bruno Meier3 May, 15:21
Re: SNO-T for export ?Bruno Meier3 May, 18:55
Re: SNO-T for export ?Bruno Meier4 May, 07:01
Re: What is a good sextant to buy?Bruno Meier7 Sep, 06:17
Replacement LED for Astra III B ArcCharles McElhill8 Jan, 20:34
Re: Replacement LED for Astra III B ArcCharles McElhill9 Jan, 13:30
Re: Age of Sail Navigation Weekend and a Lunars DayCharles McElhill16 Sep, 14:14
Re: Gyro sextantChris Caswell26 Jan, 15:46
Ebony OctantChris Caswell11 Mar, 22:37
Re: Ebony OctantChris Caswell13 Mar, 10:54
Mirror recoatingChris Caswell25 Mar, 22:22
Re: Mirror recoatingChris Caswell27 Mar, 11:02
Re: Bright meteor over northeast US last nightChris Post26 Jul, 03:26
Re: Modern Celestial at Mystic Seaport, May 18-19Chris Willmes15 May, 11:58
Re: Time zone sign conventionsD Maracle13 Feb, 18:35
Re: Titanic's last starsDale Lichtblau9 May, 03:08
Re: A DIY Faraday cage: caveats and hints?Damian Lopez22 Jan, 13:50
Re: Live AIS trackingDamian Lopez23 Jan, 20:55
Re: A DIY Faraday cage: caveats and hints?Damian Lopez24 Jan, 18:09
Re: Live AIS trackingDamian Lopez24 Jan, 18:39
Star telescope for H.hughes and son's "mate" sextantDave Trickett23 Feb, 21:02
Re: Star telescope for H.hughes and son's "mate" sextantDave Trickett24 Feb, 01:19
Re: In memoriam: Stan KleinDave Walden28 Jan, 14:31
Re: The Appleyard Course and Distance ComputerDave Walden3 Mar, 15:21
Re: The Appleyard Course and Distance ComputerDave Walden6 Mar, 15:12
Re: The Appleyard Course and Distance ComputerDave Walden18 Mar, 23:37
Re: Yogurt Sky: Navigational StarsDave Walden22 Jun, 01:31
Re: Yogurt Sky: Navigational StarsDave Walden22 Jun, 11:08
Re: It's 2019...David C2 Jan, 05:04
Re: GPS Time and Network TimeDavid C11 Jan, 02:18
Re: GPS Time and Network TimeDavid C11 Jan, 02:52
Re: Why no airtraffic over Antarctica?David C20 Jan, 07:33
Re: Flying to AntarcticaDavid C21 Jan, 00:32
Re: Flying to AntarcticaDavid C21 Jan, 01:03
Re: ADMIN NavList on small screensDavid C7 Feb, 23:14
Re: ADMIN NavList on small screensDavid C7 Feb, 23:30
Re: Magnetic variation changing faster than anticipatedDavid C25 Feb, 04:32
Re: Magnetic variation changing faster than anticipatedDavid C26 Feb, 20:27
Re: Magnetic variation changing faster than anticipatedDavid C27 Feb, 06:28
Astro from a trainDavid C7 Mar, 07:12
Dip ShortDavid C7 Mar, 07:50
Re: Today’s the Spring EquinoxDavid C20 Mar, 22:25
Re: Today’s the Spring EquinoxDavid C20 Mar, 22:31
Re: Today’s the Spring EquinoxDavid C20 Mar, 23:19
Re: Early Air Navigation with RDFDavid C18 Apr, 04:35
Re: Titanic's last starsDavid C2 May, 10:30
Re: Titanic's last starsDavid C2 May, 21:42
Re: A good clock for a few billion yearsDavid C6 May, 03:53
Re: A good clock for a few billion yearsDavid C6 May, 04:06
Re: George Bennett obituaryDavid C7 May, 04:09
Re: Is it possible to improve the presentation of this forum ?David C17 May, 02:16
Re: Is it possible to improve the presentation of this forum ?David C17 May, 02:34
Re: Greenwich 19th and 20th c conventionsDavid C11 Jun, 22:03
Re: Greenwich 19th and 20th c conventionsDavid C11 Jun, 22:27
Re: How to round?David C14 Jun, 00:39
What is my latitude?David C20 Jun, 09:11
Re: Which Cocked Hat?David C2 Aug, 05:49
Re: Which Cocked Hat?David C2 Aug, 09:23
Re: Which Cocked Hat?David C2 Aug, 21:27
Re: Kollsman Periscopic Bubble AdjustDavid C6 Aug, 09:08
Re: Kollsman Periscopic Bubble AdjustDavid C7 Aug, 06:01
Re: Harold Gatty's KamalDavid C30 Aug, 09:21
Re: Polaris - changes in SHA and DeclinationDavid Fleming22 Feb, 17:35
Re: I.C. and sunspotDavid Fleming13 May, 18:00
Re: Lost at Sea with a sextant puzzleDavid Iwancio23 Jun, 11:50
Indian Astronomical Ephemeris as a "Retro Almanac"David Iwancio26 Jun, 07:36
N(x) Table and Small AnglesDavid Iwancio27 Jun, 06:24
Re: AzimuthsDavid Iwancio2 Jul, 22:17
World Map and Overlays for Great Circle Distances & Zenith AngleDavid Iwancio7 Jul, 05:17
Re: Tamaya NC-88 on ebayDavid Iwancio11 Jul, 00:55
Re: Tamaya NC-88 on ebayDavid Iwancio11 Jul, 01:30
Stark's Lunar Tables on a Flattened EarthDavid Iwancio14 Jul, 17:41
Re: A novel material for mirror AH ?David Iwancio15 Aug, 05:28
Re: The Improved Suns Table4 from HO249David Iwancio30 Aug, 07:23
Re: Sighting errorsDavid Pike8 Jan, 20:11
Re: Moby Dick TalesDavid Pike10 Jan, 23:55
Re: Moby Dick TalesDavid Pike11 Jan, 20:25
Re: Moby Dick TalesDavid Pike14 Jan, 11:48
Re: Life on the OceanDavid Pike14 Jan, 23:39
Re: Finding great circle apex?David Pike17 Jan, 19:13
Re: Finding great circle apex?David Pike17 Jan, 20:31
Re: Finding great circle apex?David Pike18 Jan, 13:21
Re: Finding great circle apex?David Pike19 Jan, 14:50
Re: Flying to AntarcticaDavid Pike21 Jan, 19:40
Re: Flying to AntarcticaDavid Pike21 Jan, 20:43
Re: The Moon is near zenith at 60 N these daysDavid Pike21 Jan, 21:03
Re: Gyro sextantDavid Pike24 Jan, 23:21
Re: Gyro sextantDavid Pike25 Jan, 09:21
Re: Gyro sextantDavid Pike25 Jan, 09:42
Re: Gyro sextantDavid Pike25 Jan, 10:13
Re: Gyro sextantDavid Pike25 Jan, 23:47
Re: Gyro sextantDavid Pike26 Jan, 00:03
Re: Gyro sextantDavid Pike26 Jan, 23:31
Re: Gyro sextantDavid Pike27 Jan, 11:16
Re: Gyro sextantDavid Pike27 Jan, 11:41
Re: Gyro sextantDavid Pike28 Jan, 09:56
Re: Sun and moon at the North Pole.David Pike30 Jan, 00:00
Re: Gyro sextantDavid Pike30 Jan, 22:21
Re: Gyro sextantDavid Pike31 Jan, 10:39
Re: Any reading suggestions?David Pike1 Feb, 14:39
Re: Gyro sextantDavid Pike3 Feb, 11:13
Re: Northern Limits of Magnetic Compass UsefulnessDavid Pike3 Feb, 11:52
Re: Examples of cocked hat far from equilateralDavid Pike5 Feb, 19:37
Re: Is most probable position (MPP) a dangerous misnomer?David Pike5 Feb, 19:42
Re: Gyro sextantDavid Pike8 Feb, 15:50
Re: Gyro sextantDavid Pike8 Feb, 16:31
Re: Gyro sextantDavid Pike13 Feb, 20:56
First Direct West to East Atlantic Flight 1919David Pike13 Feb, 22:11
Re: Examples of cocked hat far from equilateralDavid Pike14 Feb, 19:54
Re: Examples of cocked hat far from equilateralDavid Pike15 Feb, 17:52
Re: Star telescope for H.hughes and son's "mate" sextantDavid Pike23 Feb, 22:38
Re: GPS for chickens and spinachDavid Pike25 Feb, 15:03
Re: Magnetic variation changing faster than anticipatedDavid Pike25 Feb, 17:48
Re: Donald Crowhurst shooting the SunDavid Pike26 Feb, 10:09
Re: Donald Crowhurst shooting the SunDavid Pike26 Feb, 20:10
Re: Magnetic variation changing faster than anticipatedDavid Pike26 Feb, 22:02
Re: Magnetic variation changing faster than anticipatedDavid Pike27 Feb, 18:08
Re: Magnetic variation changing faster than anticipatedDavid Pike27 Feb, 20:56
Re: Magnetic variation changing faster than anticipatedDavid Pike28 Feb, 17:36
Re: Magnetic variation changing faster than anticipatedDavid Pike28 Feb, 19:32
Re: What level of english skills is needed for safe navigation?David Pike1 Mar, 08:41
Wind Velocity from Three DriftsDavid Pike1 Mar, 15:20
The Appleyard Course and Distance ComputerDavid Pike1 Mar, 22:12
Re: The Appleyard Course and Distance ComputerDavid Pike5 Mar, 22:10
Re: The Appleyard Course and Distance ComputerDavid Pike6 Mar, 18:13
Re: Magnetic variation changing faster than anticipatedDavid Pike6 Mar, 18:20
Re: The Appleyard Course and Distance ComputerDavid Pike6 Mar, 21:58
Re: Dip ShortDavid Pike7 Mar, 16:12
Re: Dip ShortDavid Pike8 Mar, 00:29
Re: An analytical solution of the two star sight problem of celestial navigationDavid Pike9 Mar, 16:15
Re: Corrections for latitude when taking sightsDavid Pike11 Mar, 16:47
Re: Corrections for latitude when taking sightsDavid Pike12 Mar, 18:14
Re: Corrections for latitude when taking sightsDavid Pike12 Mar, 21:56
Re: Corrections for latitude when taking sightsDavid Pike13 Mar, 08:29
Re: Corrections for latitude when taking sightsDavid Pike13 Mar, 16:42
Re: Corrections for latitude when taking sightsDavid Pike13 Mar, 23:56
What is the radius of the Prime Vertical?David Pike14 Mar, 17:08
Re: What is the radius of the Prime Vertical?David Pike14 Mar, 23:15
Re: What is the radius of the Prime Vertical?David Pike15 Mar, 13:21
Re: The Appleyard Course and Distance ComputerDavid Pike15 Mar, 21:21
Re: Mercury is the closest planet, on average...David Pike16 Mar, 08:58
Re: Ellipse of Confidence in position findingDavid Pike17 Mar, 18:25
Re: Ellipse of Confidence in position findingDavid Pike18 Mar, 11:29
Re: Ellipse of Confidence in position findingDavid Pike18 Mar, 19:34
Today’s the Spring EquinoxDavid Pike20 Mar, 13:50
Zenith FixesDavid Pike21 Mar, 22:41
Re: Obtuse versus acute cocked hatDavid Pike21 Mar, 23:24
Re: Zenith FixesDavid Pike22 Mar, 16:23
Re: Zenith FixesDavid Pike23 Mar, 11:04
Re: Zenith FixesDavid Pike23 Mar, 22:54
Re: Today’s the Spring EquinoxDavid Pike24 Mar, 10:31
Re: Today’s the Spring EquinoxDavid Pike24 Mar, 14:38
Re: Zenith FixesDavid Pike26 Mar, 00:29
Re: Kollsman periscopic sextant mountDavid Pike30 Mar, 20:45
Re: Robin Stuart's paper "Probabilities in a Gaussian Cocked Hat"David Pike30 Mar, 21:49
Re: Zenith FixesDavid Pike30 Mar, 22:33
Re: Kollsman periscopic sextant mountDavid Pike31 Mar, 11:43
Re: Douglas-Appleyard Arcless SextantDavid Pike31 Mar, 14:44
Re: Douglas-Appleyard Arcless Sextant - HelpDavid Pike31 Mar, 20:07
Re: Plotting Tools?David Pike5 Apr, 08:50
Re: Plotting Tools?David Pike5 Apr, 21:48
Re: Plotting Tools?David Pike7 Apr, 09:01
Re: Possible GPS Date Rollover problems week of April 6, 2019David Pike7 Apr, 16:57
Re: Wikipedia article on Winslow Homer's "Eight Bells"David Pike9 Apr, 08:00
Re: Early Air Navigation with RDFDavid Pike17 Apr, 19:53
Re: First commercial aircraft with GPSDavid Pike21 Apr, 22:43
Re: Early Air Navigation with RDFDavid Pike29 Apr, 20:28
Re: Consistent "away" intercepts. Why?David Pike2 May, 21:30
Re: Life on the OceanDavid Pike4 May, 15:40
Re: Consistent "away" intercepts. Why?David Pike4 May, 15:45
Re: Consistent "away" intercepts. Why?David Pike4 May, 22:07
Re: Is it possible to improve the presentation of this forum ?David Pike15 May, 18:41
Missed Fryer, found MarryatDavid Pike15 May, 19:53
Re: Logarithms: adding tenDavid Pike16 May, 16:03
Re: Mark-IX-A bubble sextant calibration reportDavid Pike24 May, 13:19
Re: Mark-IX-A bubble sextant calibration reportDavid Pike24 May, 16:45
Re: Mark-IX-A bubble sextant calibration reportDavid Pike24 May, 19:47
Re: Mark-IX-A bubble sextant calibration reportDavid Pike24 May, 21:24
Re: Mark-IX-A bubble sextant calibration reportDavid Pike27 May, 09:55
Re: Please recommend a good book or on-line courseDavid Pike29 May, 11:41
Re: Mark-IX-A bubble sextant calibration reportDavid Pike29 May, 15:47
Re: Henry Hughes Sextant (No. 5154)David Pike29 May, 22:28
Re: Old batteries from WWII found in a MARK-IX-A handleDavid Pike4 Jun, 20:05
Re: Mark-IX-A bubble sextant calibration station detailsDavid Pike4 Jun, 20:09
Re: Mark-IX-A bubble sextant calibration station detailsDavid Pike7 Jun, 08:23
Re: Please recommend a good book or on-line courseDavid Pike9 Jun, 20:59
Re: How to round?David Pike13 Jun, 13:27
Re: Lost at Sea with a sextant puzzleDavid Pike24 Jun, 21:20
Re: AzimuthsDavid Pike3 Jul, 08:35
Re: Lightning Strike CN ExerciseDavid Pike11 Jul, 20:34
Re: Lightning Strike CN ExerciseDavid Pike12 Jul, 17:01
Re: C&P AH: size of the bubbleDavid Pike13 Jul, 20:45
Re: Lightning Strike CN ExerciseDavid Pike15 Jul, 16:18
Re: We need a backup to GPSDavid Pike21 Jul, 07:46
Re: We need a backup to GPSDavid Pike22 Jul, 12:01
Re: Mirror AH - safety firstDavid Pike25 Jul, 08:17
Re: Is this a "digital sextant"?David Pike17 Aug, 21:32
Re: What3words: con game in the UKDavid Pike22 Aug, 10:42
Re: What3words: con game in the UKDavid Pike4 Sep, 21:31
Re: What3words: con game in the UKDavid Pike5 Sep, 08:03
Polaris - changes in SHA and DeclinationDavid Shoemaker22 Feb, 15:59
Re: Polaris - changes in SHA and DeclinationDavid Shoemaker24 Feb, 19:31
Re: Today’s the Spring EquinoxDavid Shoemaker23 Mar, 17:47
Re: Today’s the Spring EquinoxDavid Shoemaker23 Mar, 18:27
Re: Today’s the Spring EquinoxDavid Shoemaker5 Apr, 12:07
Re: Today’s the Spring EquinoxDavid Shoemaker7 Apr, 13:14
Re: Today’s the Spring EquinoxDavid Shoemaker8 Apr, 11:31
Re: A DIY Faraday cage: caveats and hints?Dennis Jewitt22 Jan, 13:33
Welcome to the New YearDerrick Young1 Jan, 15:13
Possible GPS Date Rollover problems week of April 6, 2019Derrick Young15 Mar, 23:49
Re: Possible GPS Date Rollover problems week of April 6, 2019Derrick Young26 Mar, 21:49
Celestial statistical fixdjamel ait amrane17 May, 13:04
Re: Celestial statistical fixdjamel ait amrane19 May, 12:21
Re: Which stars are circumpolar at 52 N?djamel ait amrane29 May, 17:51
Re: Navigation books in Frenchdjamel ait amrane5 Jun, 17:19
Re: In memoriam: Yves Robin-Jouandjamel ait amrane10 Jun, 10:14
Murdoch's Sun-Sight Reduction ProgramDon Byers18 Jan, 20:01
Re: Murdoch's Sun-Sight Reduction ProgramDon Byers18 Jan, 21:43
Re: A lunar in 1845Don Seltzer2 Jan, 14:54
Re: A lunar in 1845Don Seltzer2 Jan, 20:46
Re: Moby Dick TalesDon Seltzer10 Jan, 00:47
Re: Moby Dick TalesDon Seltzer10 Jan, 15:46
Re: Moby Dick TalesDon Seltzer11 Jan, 14:34
Re: Moby Dick TalesDon Seltzer11 Jan, 19:41
Re: Moby Dick TalesDon Seltzer12 Jan, 16:41
Re: Moby Dick TalesDon Seltzer15 Jan, 15:06
Re: Moby Dick TalesDon Seltzer15 Jan, 19:06
Re: Comet Donati above Paris 1858Don Seltzer21 Apr, 15:38
Re: Titanic's last starsDon Seltzer2 May, 21:04
Re: Robert Ballard, Titanic discoverer, seeks Amelia Earhart's planeDon Seltzer27 Jul, 15:31
Re: Parallel Sailing questionDon Seltzer1 Aug, 13:17
Re: Is this a "digital sextant"?Don Seltzer16 Aug, 19:26
Re: Wikipedia article on Winslow Homer's "Eight Bells"Doug MacPherson8 Apr, 23:06
Re: Please recommend a good book or on-line courseDoug MacPherson29 May, 04:21
Lost at Sea with a sextant puzzleDoug MacPherson23 Jun, 01:55
Re: Lost at Sea with a sextant puzzleDoug MacPherson24 Jun, 17:10
Re: Lightning Strike CN ExerciseDoug MacPherson11 Jul, 16:59
Need Help with extract from Ho 249 volume 1 EPOCH 1995Doug MacPherson12 Jul, 17:19
Re: Need Help with extract from Ho 249 volume 1 EPOCH 1995Doug MacPherson12 Jul, 19:41
Re: An artificial horizon eclipse sightDoug MacPherson12 Aug, 02:12
Re: George Bennett obituaryDrago Simac13 May, 02:19
Re: Please recommend a good book or on-line courseDrago Simac28 May, 21:52
Re: Help ... Tamaya NC 88Drago Simac8 Aug, 23:38
Question about history of lunar distanceDucruy Jacques28 Jan, 17:07
Re: Mirror recoatingDustin Baenen26 Mar, 17:12
Re: Early Air Navigation with RDFDustin Baenen17 Apr, 19:26
First Point of Aries newbie questionEamonn Sparling5 Mar, 17:22
Re: Welcome to the New YearEd Popko1 Jan, 22:08
Re: A lunar in 1845Ed Popko2 Jan, 11:47
Re: A lunar in 1845Ed Popko3 Jan, 12:02
Re: A lunar in 1845Ed Popko4 Jan, 13:57
Re: A lunar in 1845Ed Popko4 Jan, 20:11
Re: Noticed by the James Caird Society!Ed Popko9 Jan, 17:15
Re: Moby Dick TalesEd Popko9 Jan, 23:22
Re: Moby Dick TalesEd Popko10 Jan, 16:23
Re: Life on the OceanEd Popko14 Jan, 22:43
Lunars on eclipse day, IE surprise and time bracketsEd Popko24 Jan, 14:58
Re: Lunars on eclipse day, IE surprise and time bracketsEd Popko24 Jan, 20:17
Re: In memoriam: Stan KleinEd Popko27 Jan, 22:33
With the aid of CN, Van Den Heede wins the Golden Globe round-the-world raceEd Popko30 Jan, 11:09
Re: Moon, Venus and Jupiter todayEd Popko2 Feb, 12:22
Re: Moon, Venus and Jupiter todayEd Popko2 Feb, 22:01
Re: Moon, Venus and Jupiter todayEd Popko3 Feb, 16:58
Re: Moon, Venus and Jupiter todayEd Popko5 Feb, 19:52
Re: ADMIN NavList on small screensEd Popko6 Feb, 12:43
Re: ADMIN NavList on small screensEd Popko6 Feb, 23:01
Re: Northern Limits of Magnetic Compass UsefulnessEd Popko8 Feb, 12:55
Re: Moon, Venus and Jupiter todayEd Popko10 Feb, 13:09
Re: CP-300/U Star FinderEd Popko18 Feb, 13:26
Re: CP-300/U Star FinderEd Popko18 Feb, 19:51
Re: GPS for chickens and spinachEd Popko25 Feb, 00:50
Re: Magnetic variation changing faster than anticipatedEd Popko28 Feb, 11:52
Re: Wind Velocity from Three DriftsEd Popko3 Mar, 17:22
Re: CP-300/U Star FinderEd Popko24 Mar, 09:48
Re: CP-300/U Star FinderEd Popko26 Mar, 15:34
Re: Possible GPS Date Rollover problems week of April 6, 2019Ed Popko26 Mar, 20:52
Re: Cpu-50A/PEd Popko29 Mar, 10:44
Re: Wikipedia article on Winslow Homer's "Eight Bells"Ed Popko10 Apr, 10:40
Re: Mariner's astrolabe from Museo Naval de MadridEd Popko11 Apr, 09:52
Re: Northern Limits of Magnetic Compass UsefulnessEd Popko12 Apr, 09:42
Re: Sextant use on tankerEd Popko13 Apr, 21:21
Early Air Navigation with RDFEd Popko16 Apr, 23:03
Re: Early Air Navigation with RDFEd Popko18 Apr, 10:30
First commercial aircraft with GPSEd Popko20 Apr, 10:05
Re: First commercial aircraft with GPSEd Popko22 Apr, 12:33
Re: Early Air Navigation with RDFEd Popko22 Apr, 13:28
Re: Polariser (photo) filter as a sextant shade - my experience.Ed Popko27 Apr, 16:31
The Sextant ...Ed Popko27 Apr, 21:13
Re: Life on the OceanEd Popko6 May, 09:42
Logarithms: adding tenEd Popko11 May, 10:44
Re: Logarithms: adding tenEd Popko16 May, 23:09
Sextant adjustment (again)Ed Popko16 May, 23:45
Re: Easy star-to-star distance correctionsEd Popko23 May, 21:52
CP-300/U USAF Star FinderEd Popko30 May, 16:07
Re: CP-300/U USAF Star FinderEd Popko1 Jun, 12:22
US WW2 Fairchild Maxson Mk1 Line of Position Navigational ComputerEd Popko1 Jun, 16:12
Re: Radar sundialEd Popko6 Jun, 23:48
Greenwich 19th and 20th c conventionsEd Popko10 Jun, 13:16
Re: How to round?Ed Popko14 Jun, 00:23
Re: CP-300/U USAF Star FinderEd Popko27 Jun, 10:52
Re: Coordinate precisionEd Popko3 Jul, 09:47
Optical bench for sextants?Ed Popko4 Jul, 19:18
Re: Apollo SextantEd Popko21 Jul, 11:54
Re: Apollo SextantEd Popko21 Jul, 12:04
Re: Mirror AH - safety firstEd Popko24 Jul, 01:13
Re: Celestial Navigation TriptychEd Popko24 Jul, 10:19
Robert Ballard, Titanic discoverer, seeks Amelia Earhart's planeEd Popko25 Jul, 01:00
Re: Robert Ballard, Titanic discoverer, seeks Amelia Earhart's planeEd Popko25 Jul, 19:24
Re: Robert Ballard, Titanic discoverer, seeks Amelia Earhart's planeEd Popko26 Jul, 18:53
Re: Mirror AH - safety firstEd Popko27 Jul, 14:52
Cones of Position, Lunars and the Apollo SextantEd Popko2 Aug, 19:23
Re: Cones of Position, Lunars and the Apollo SextantEd Popko4 Aug, 12:42
Re: An artificial horizon eclipse sightEd Popko5 Aug, 19:07
Re: An artificial horizon eclipse sightEd Popko7 Aug, 14:14
Sextant octant rubber eyepad preservationEd Popko14 Aug, 10:22
Re: Sextant octant rubber eyepad preservationEd Popko14 Aug, 18:58
Re: Navigation articles on WikipediaEd Popko29 Aug, 09:53
Re: What is a good sextant to buy?Ed Popko3 Sep, 23:00
Re: Age of Sail Navigation Weekend and a Lunars DayEd Popko16 Sep, 23:22
Re: Kollsman periscopic sextant mountEduard Rulf1 Sep, 11:25
Japanese bubble sextant or else ?Eric van der Veen30 Jun, 22:29
Re: Japanese bubble sextant or else ?Eric van der Veen1 Jul, 07:13
Re: Japanese bubble sextant or else ?Eric van der Veen1 Jul, 20:41
Re: Davis Mark 12 sextantErik O27 Jul, 04:15
Re: Moby Dick TalesFrancis Upchurch10 Jan, 18:44
Re: Moby Dick TalesFrancis Upchurch12 Jan, 20:56
Re: Estimating distance on a Fractal WorldFrancis Upchurch14 Jan, 05:19
Re: Brown-Nassau CN PlotterFrancis Upchurch13 Feb, 06:16
Re: Brown-Nassau CN PlotterFrancis Upchurch14 Feb, 06:20
Re: What level of english skills is needed for safe navigation?Francis Upchurch1 Mar, 18:40
Earthrise.Francis Upchurch29 Apr, 13:50
Re: Earthrise.Francis Upchurch1 May, 07:03
Re: Earthrise.Francis Upchurch1 May, 07:20
Re: Life on the OceanFrancis Upchurch4 May, 06:25
Re: Life on the OceanFrancis Upchurch5 May, 04:16
Re: Please recommend a good book or on-line courseFrancis Upchurch29 May, 05:34
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechFrancis Upchurch1 Jun, 05:51
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechFrancis Upchurch2 Jun, 05:28
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechFrancis Upchurch2 Jun, 05:53
Re: AzimuthsFrancis Upchurch3 Jul, 19:03
Apollo 11Francis Upchurch21 Jul, 04:30
Re: What is a good sextant to buy?Francis Upchurch3 Sep, 06:31
Re: What is a good sextant to buy?Francis Upchurch5 Sep, 18:59
Re: What is a good sextant to buy?Francis Upchurch15 Sep, 08:45
It's 2019...Frank Reed1 Jan, 00:05
Re: It's 2019...Frank Reed1 Jan, 14:51
A lunar in 1845Frank Reed1 Jan, 23:06
Re: A lunar in 1845Frank Reed2 Jan, 17:43
Re: A lunar in 1845Frank Reed3 Jan, 00:14
Re: A lunar in 1845Frank Reed3 Jan, 18:00
Re: A lunar in 1845Frank Reed4 Jan, 17:34
Re: Spur of the moment long by chronFrank Reed7 Jan, 03:54
ADMIN private messages plus a few other mattersFrank Reed7 Jan, 04:15
Re: Moby Dick TalesFrank Reed9 Jan, 22:31
Re: Moby Dick TalesFrank Reed10 Jan, 18:30
Re: GPS Time and Network TimeFrank Reed10 Jan, 19:08
Re: GPS Time and Network TimeFrank Reed11 Jan, 04:46
Re: Moby Dick TalesFrank Reed11 Jan, 23:02
Re: Moby Dick TalesFrank Reed12 Jan, 16:08
Re: Moby Dick TalesFrank Reed12 Jan, 19:24
Re: Alain Gerbault logbookFrank Reed13 Jan, 17:04
Re: Earth's Magnetic North Pole is moving more and more quicklyFrank Reed13 Jan, 20:25
Estimating distance on a Fractal WorldFrank Reed13 Jan, 22:48
Re: Life on the OceanFrank Reed14 Jan, 16:04
Re: Extra! Extra! Read all about it.Frank Reed14 Jan, 16:27
Re: Life on the OceanFrank Reed14 Jan, 17:21
Re: Life on the OceanFrank Reed14 Jan, 22:48
Re: Moby Dick TalesFrank Reed15 Jan, 20:04
Re: Moby Dick TalesFrank Reed15 Jan, 20:22
Re: CN on the Moon: where are its' poles?Frank Reed16 Jan, 16:02
Re: CN on the Moon: where are its' poles?Frank Reed16 Jan, 19:32
Re: Oh No! Fundamental flaw in celestial navigation revealed!Frank Reed17 Jan, 17:07
Re: Correcting declination for longitudeFrank Reed18 Jan, 19:14
Re: Finding great circle apex?Frank Reed19 Jan, 19:55
Re: New Year's resolutionsFrank Reed19 Jan, 21:15
Re: Moby Dick TalesFrank Reed19 Jan, 21:56
Re: Why no airtraffic over Antarctica?Frank Reed19 Jan, 23:05
Lunar Eclipse in Icy New EnglandFrank Reed20 Jan, 21:44
Re: Flying to AntarcticaFrank Reed21 Jan, 21:00
Re: The Moon is near zenith at 60 N these daysFrank Reed21 Jan, 21:21
Re: A DIY Faraday cage: caveats and hints?Frank Reed22 Jan, 16:09
Re: CNAV and Rearranging the mass of the earth's water?Frank Reed23 Jan, 20:39
Re: Live AIS trackingFrank Reed23 Jan, 21:35
Re: Lunars on eclipse day, IE surprise and time bracketsFrank Reed24 Jan, 18:28
Re: Gyro sextantFrank Reed24 Jan, 19:02
Re: Glowing space billboards could show ads in the night skyFrank Reed25 Jan, 02:48
ADMIN website slowFrank Reed25 Jan, 19:45
Navi, Dnoces, and RegorFrank Reed26 Jan, 22:06
In memoriam: Stan KleinFrank Reed27 Jan, 19:20
Re: Sun and moon at the North Pole.Frank Reed29 Jan, 17:11
Re: Sun and moon at the North Pole.Frank Reed30 Jan, 01:26
Re: Sun and moon at the North Pole.Frank Reed30 Jan, 03:52
Re: Sun and moon at the North Pole.Frank Reed30 Jan, 06:28
Re: With the aid of CN, Van Den Heede wins the Golden Globe round-the-world raceFrank Reed30 Jan, 19:22
Re: Sun and moon at the North Pole.Frank Reed30 Jan, 20:28
Re: More on the North Magnetic Pole (NYT)Frank Reed5 Feb, 17:49
Re: Is most probable position (MPP) a dangerous misnomer?Frank Reed5 Feb, 20:06
Re: Northern Limits of Magnetic Compass UsefulnessFrank Reed5 Feb, 23:04
Re: More on the North Magnetic Pole (NYT)Frank Reed6 Feb, 00:05
Re: What sextant to buy ?Frank Reed6 Feb, 06:46
ADMIN NavList on small screensFrank Reed6 Feb, 07:25
Re: ADMIN NavList on small screensFrank Reed6 Feb, 17:04
Re: Northern Limits of Magnetic Compass UsefulnessFrank Reed6 Feb, 20:08
Re: More on the North Magnetic Pole (NYT)Frank Reed6 Feb, 21:02
Re: Northern Limits of Magnetic Compass UsefulnessFrank Reed6 Feb, 21:30
Re: ADMIN NavList on small screensFrank Reed6 Feb, 21:49
Re: ADMIN NavList on small screensFrank Reed7 Feb, 02:50
Re: Northern Limits of Magnetic Compass UsefulnessFrank Reed7 Feb, 21:09
Re: More on the North Magnetic Pole (NYT)Frank Reed8 Feb, 17:31
ADMIN: NavList Operations ContributionsFrank Reed10 Feb, 05:25
Re: ADMIN NavList on small screensFrank Reed10 Feb, 18:33
Re: Moon, Venus and Jupiter todayFrank Reed10 Feb, 19:40
Re: Time zone sign conventionsFrank Reed11 Feb, 16:17
Re: ADMIN: NavList Operations ContributionsFrank Reed13 Feb, 16:01
Re: ADMIN: NavList Operations ContributionsFrank Reed13 Feb, 20:22
Re: Latitude at Noon and Midnight.Frank Reed15 Feb, 01:55
Re: Historical tidesFrank Reed16 Feb, 00:14
Re: Historical tidesFrank Reed16 Feb, 02:54
Re: Celestial Navigation in 1866Frank Reed17 Feb, 06:55
Re: "hack" as a nounFrank Reed18 Feb, 22:00
Re: Iterative Lunar methodFrank Reed20 Feb, 06:41
Re: GMT from Moon and Body Observed Altitudes...??Frank Reed21 Feb, 17:24
Re: Contributing to NavList OperationsFrank Reed21 Feb, 17:45
Re: Iterative Lunar methodFrank Reed21 Feb, 18:18
Re: Polaris - changes in SHA and DeclinationFrank Reed22 Feb, 16:57
Re: Polaris - changes in SHA and DeclinationFrank Reed22 Feb, 18:33
GPS for chickens and spinachFrank Reed24 Feb, 16:16
Re: GPS for chickens and spinachFrank Reed24 Feb, 20:27
Re: Magnetic variation changing faster than anticipatedFrank Reed25 Feb, 02:59
Re: GPS for chickens and spinachFrank Reed25 Feb, 17:11
Re: Magnetic variation changing faster than anticipatedFrank Reed25 Feb, 20:47
Re: Iterative Lunar methodFrank Reed26 Feb, 03:24
Donald Crowhurst shooting the SunFrank Reed26 Feb, 04:25
Re: What level of english skills is needed for safe navigation?Frank Reed1 Mar, 16:01
Introductory Celestial Navigation workshops coming up...Frank Reed5 Mar, 18:32
Re: First Point of Aries newbie questionFrank Reed5 Mar, 18:41
Re: An analytical solution of the two star sight problem of celestial navigationFrank Reed7 Mar, 21:00
Re: Old stone walls record the changing location of magnetic northFrank Reed12 Mar, 17:17
Re: Old stone walls record the changing location of magnetic northFrank Reed12 Mar, 17:21
Re: Old stone walls record the changing location of magnetic northFrank Reed12 Mar, 20:42
Re: Corrections for latitude when taking sightsFrank Reed13 Mar, 19:09
Re: Corrections for latitude when taking sightsFrank Reed13 Mar, 20:01
Re: Corrections for latitude when taking sightsFrank Reed13 Mar, 23:02
Re: What is the radius of the Prime Vertical?Frank Reed14 Mar, 22:02
Re: What is the radius of the Prime Vertical?Frank Reed15 Mar, 00:17
Re: What is the radius of the Prime Vertical?Frank Reed15 Mar, 15:52
Re: Corrections for latitude when taking sightsFrank Reed15 Mar, 16:10
Mercury is the closest planet, on average...Frank Reed15 Mar, 22:09
Human magnetic senseFrank Reed19 Mar, 15:05
Re: Bessel's solution of lunar distancesFrank Reed19 Mar, 15:39
Re: Today’s the Spring EquinoxFrank Reed24 Mar, 13:05
Re: Zenith FixesFrank Reed26 Mar, 18:15
Re: Mirror recoatingFrank Reed26 Mar, 19:37
Re: Article: Follow Canopus, Not Your CompassFrank Reed26 Mar, 19:57
GPS Anti Spoof app updateFrank Reed31 Mar, 18:14
Celestial Navigation: 19th Century Methods workshopFrank Reed31 Mar, 19:05
"Modern Celestial" on the Hudson RiverFrank Reed8 Apr, 18:44
Wikipedia article on Winslow Homer's "Eight Bells"Frank Reed8 Apr, 19:32
Re: Wikipedia article on Winslow Homer's "Eight Bells"Frank Reed9 Apr, 17:40
Yoda the NavigatorFrank Reed15 Apr, 22:42
Comet Donati above Paris 1858Frank Reed20 Apr, 20:39
Re: First commercial aircraft with GPSFrank Reed20 Apr, 21:45
Re: Comet Donati above Paris 1858Frank Reed21 Apr, 20:05
Re: Comet Donati above Paris 1858Frank Reed21 Apr, 20:47
Re: Early Air Navigation with RDFFrank Reed22 Apr, 15:31
Re: Comet Donati above Paris 1858Frank Reed23 Apr, 02:08
Article: GPS Jamming, Spoofing, and BackupsFrank Reed23 Apr, 18:16
Re: Earthrise.Frank Reed30 Apr, 17:45
Re: Can humans sense the earth's magnetic field?Frank Reed30 Apr, 17:49
Re: Titanic's last starsFrank Reed1 May, 22:25
Re: Consistent "away" intercepts. Why?Frank Reed1 May, 22:32
A good clock for a few billion yearsFrank Reed5 May, 16:03
George Bennett obituaryFrank Reed7 May, 02:11
Lunars by series, quadratic correctionFrank Reed7 May, 17:15
Re: Single-body fix (at mer-pass): some questionsFrank Reed7 May, 17:34
Re: Lunars by series, quadratic correctionFrank Reed7 May, 18:39
Re: Lunars by series, quadratic correctionFrank Reed8 May, 15:55
Re: Single-body fix (at mer-pass): some questionsFrank Reed8 May, 21:04
Re: Lunars by series, quadratic correctionFrank Reed11 May, 02:02
Re: Logarithms: adding tenFrank Reed11 May, 15:40
Modern Celestial at Mystic Seaport, May 18-19Frank Reed11 May, 19:32
Re: Logarithms: adding tenFrank Reed11 May, 20:12
Re: Modern Celestial at Mystic Seaport, May 18-19Frank Reed12 May, 02:14
Re: I.C. and sunspotFrank Reed12 May, 19:24
Re: Modern Celestial at Mystic Seaport, May 18-19Frank Reed14 May, 19:39
Re: Modern Celestial at Mystic Seaport, May 18-19Frank Reed14 May, 19:48
Navigation Library for sale (K Gebhart)Frank Reed15 May, 20:06
HO-229 Abridgement by Jean VillemagneFrank Reed15 May, 20:26
Re: Deneb, Altair and SaturnFrank Reed16 May, 23:31
Re: Deneb, Altair and SaturnFrank Reed17 May, 17:08
Astronomical panorama location and dateFrank Reed18 May, 17:48
Re: Astronomical panorama location and dateFrank Reed18 May, 22:33
Easy star-to-star distance correctionsFrank Reed21 May, 23:38
Re: Easy star-to-star distance correctionsFrank Reed22 May, 19:18
Re: Lunar distance presetting exerciseFrank Reed26 May, 18:21
Re: SpaceX Starlink Satellites & AHFrank Reed26 May, 22:56
Re: Lunar distance presetting exerciseFrank Reed27 May, 18:06
Re: SpaceX Starlink Satellites & AHFrank Reed27 May, 18:11
Re: Henry Hughes Sextant (No. 5154)Frank Reed29 May, 21:05
Calculators, cosines, and floating point computationFrank Reed2 Jun, 21:10
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechFrank Reed3 Jun, 01:56
Re: Calculators, cosines, and floating point computationFrank Reed3 Jun, 14:50
Tide calculationFrank Reed3 Jun, 16:14
Re: Calculators, cosines, and floating point computationFrank Reed4 Jun, 18:20
Re: Radar sundialFrank Reed6 Jun, 17:49
Re: Stellarium Program as practice toolFrank Reed7 Jun, 19:34
Re: Nautical Miles and ApolloFrank Reed7 Jun, 21:29
Re: Tide calculationFrank Reed7 Jun, 21:37
Re: Stellarium Program as practice toolFrank Reed8 Jun, 03:03
Re: Stellarium Program as practice toolFrank Reed8 Jun, 03:08
Re: Stellarium Program as practice toolFrank Reed8 Jun, 17:39
GPS Anti Spoof Pro, for iOSFrank Reed9 Jun, 01:22
Re: Stark's Lunar Tables: log decFrank Reed9 Jun, 20:33
Re: Please recommend a good book or on-line courseFrank Reed10 Jun, 15:39
Re: NA: the combined effects of parallax and refraction?Frank Reed10 Jun, 15:56
Re: Greenwich 19th and 20th c conventionsFrank Reed10 Jun, 16:07
Re: Calculators, cosines, and floating point computationFrank Reed10 Jun, 16:29
Re: GPS Anti Spoof AppFrank Reed11 Jun, 22:14
Re: How to round?Frank Reed12 Jun, 18:04
Re: How to round?Frank Reed12 Jun, 23:53
Re: How to round?Frank Reed14 Jun, 01:17
Re: GPS Anti Spoof Pro, for iOSFrank Reed16 Jun, 00:09
Re: GPS Anti Spoof Pro, for iOSFrank Reed17 Jun, 20:27
Yogurt Sky: Navigational StarsFrank Reed21 Jun, 02:04
Re: Yogurt Sky: Navigational StarsFrank Reed26 Jun, 23:33
Re: Indian Astronomical Ephemeris as a "Retro Almanac"Frank Reed29 Jun, 03:20
Re: Constellations in "Moana"Frank Reed29 Jun, 03:46
Re: Constellations in "Moana"Frank Reed29 Jun, 21:20
Re: CP-300/U USAF Star FinderFrank Reed30 Jun, 17:50
Re: Coordinate precisionFrank Reed3 Jul, 00:53
Re: GMT of lunar altitudes when possible?Frank Reed10 Jul, 03:16
Re: GMT of lunar altitudes when possible?Frank Reed11 Jul, 00:15
Re: Need Help with extract from Ho 249 volume 1 EPOCH 1995Frank Reed12 Jul, 19:12
Re: Lightning Strike CN ExerciseFrank Reed13 Jul, 16:17
Re: Galileo Sat-Nav System Still Without ServiceFrank Reed16 Jul, 17:42
Old Garmin GPS deviceFrank Reed22 Jul, 09:04
Re: Mirror AH - safety firstFrank Reed23 Jul, 23:06
Re: Accuracy: main shades vs eyepiece shades?Frank Reed26 Jul, 02:54
Bright meteor over northeast US last nightFrank Reed26 Jul, 03:03
Re: Robert Ballard, Titanic discoverer, seeks Amelia Earhart's planeFrank Reed26 Jul, 03:10
Lunars workshop/seminar, August 10-11Frank Reed26 Jul, 03:18
Re: Parallel Sailing questionFrank Reed31 Jul, 21:31
Re: Which Cocked Hat?Frank Reed1 Aug, 02:59
Re: Parallel Sailing questionFrank Reed1 Aug, 03:03
Re: Which Cocked Hat?Frank Reed2 Aug, 17:57
Re: American Practical Navigator, Bowditch 2019Frank Reed3 Aug, 22:08
Re: Chauvenet on his lunar methodFrank Reed3 Aug, 23:49
Re: Which Cocked Hat?Frank Reed4 Aug, 02:34
Re: Cones of Position, Lunars and the Apollo SextantFrank Reed4 Aug, 03:10
Re: Old Garmin GPS deviceFrank Reed4 Aug, 03:19
Re: Davis Mark 12 sextantFrank Reed4 Aug, 03:25
Re: Distance off, by sextant angleFrank Reed4 Aug, 03:30
Re: Which Cocked Hat?Frank Reed4 Aug, 19:08
Re: Which Cocked Hat?Frank Reed4 Aug, 19:27
Navigating USS Nautilus in 1958Frank Reed4 Aug, 19:58
Re: Cones of Position, Lunars and the Apollo SextantFrank Reed5 Aug, 02:53
An artificial horizon eclipse sightFrank Reed5 Aug, 17:40
Re: Kollsman Periscopic Bubble AdjustFrank Reed7 Aug, 18:49
Re: GPS Anti-Spoof IssueFrank Reed8 Aug, 22:25
ADMIN: NavList Operations ContributionsFrank Reed15 Aug, 21:51
Re: Optimal HoE?Frank Reed19 Aug, 18:15
Re: Optimal HoE?Frank Reed19 Aug, 19:53
What3words: con game in the UKFrank Reed22 Aug, 03:19
Re: What3words: con game in the UKFrank Reed22 Aug, 11:51
Re: What3words: con game in the UKFrank Reed22 Aug, 12:07
Re: What3words: con game in the UKFrank Reed22 Aug, 16:36
The art of large vessel navigationFrank Reed22 Aug, 18:06
Shoot a lunar tomorrowFrank Reed22 Aug, 20:06
Re: ADMIN: NavList Operations ContributionsFrank Reed23 Aug, 03:12
Re: Shoot a lunar tomorrowFrank Reed24 Aug, 21:55
Longitude by relative lunar azimuthFrank Reed24 Aug, 22:44
Re: Navigator, Dead Reckoning bagFrank Reed26 Aug, 19:48
Navigation articles on WikipediaFrank Reed27 Aug, 16:17
In memoriam: Joel SilverbergFrank Reed31 Aug, 19:23
Re: What is a good sextant to buy?Frank Reed2 Sep, 03:22
Re: Zero-Altitude ShotFrank Reed8 Sep, 22:20
Age of Sail Navigation Weekend and a Lunars DayFrank Reed15 Sep, 03:48
Re: Lunar HaloFrank Reed17 Sep, 19:17
Re: Age of Sail Navigation Weekend and a Lunars DayFrank Reed17 Sep, 20:01
A sextant in pop cultureFrank Reed18 Sep, 01:19
Re: Moon meridian passage and its TiltFrank Reed18 Sep, 18:10
Re: Iterative Lunar methodFred Hebard20 Feb, 14:07
Re: GMT from Moon and Body Observed Altitudes...??Fred Hebard21 Feb, 00:54
Re: GMT from Moon and Body Observed Altitudes...??Fred Hebard21 Feb, 20:13
Re: Dating Hughes and Son sextantsFred Hebard19 Jun, 02:09
Re: Lost at Sea with a sextant puzzleFred Hebard24 Jun, 01:58
Re: Lost at Sea with a sextant puzzleFred Hebard24 Jun, 02:02
Re: Henry Hughes Sextant (No. 5154)Fred Hebard27 Jun, 00:23
Finding stars in daylightFred Hebard1 Jul, 19:18
Re: Finding stars in daylightFred Hebard12 Jul, 07:13
Re: Finding stars in daylightFred Hebard14 Jul, 04:14
Re: Finding stars in daylightFred Hebard15 Jul, 01:22
Re: Finding stars in daylightFred Hebard18 Jul, 00:55
Re: GPS Spoofing and TimeFred Hebard28 Aug, 12:06
Re: It's 2019...Gary LaPook1 Jan, 19:19
Re: It's 2019...Gary LaPook2 Jan, 07:25
Re: Radio Time signalsGary LaPook9 Jan, 19:15
Re: Moby Dick TalesGary LaPook10 Jan, 09:39
Re: Earth's Magnetic North Pole is moving more and more quicklyGary LaPook13 Jan, 20:44
Re: Why no airtraffic over Antarctica?Gary LaPook20 Jan, 05:44
Re: Why no airtraffic over Antarctica?Gary LaPook21 Jan, 00:19
Live AIS trackingGary LaPook23 Jan, 07:27
Re: Gyro sextantGary LaPook24 Jan, 21:13
Sir John Franklin's artificial horizonGary LaPook31 Jan, 09:36
Re: Sir John Franklin's artificial horizonGary LaPook31 Jan, 18:03
Re: Northern Limits of Magnetic Compass UsefulnessGary LaPook2 Feb, 20:49
Re: Examples of cocked hat far from equilateralGary LaPook4 Feb, 18:40
Re: Time zone sign conventionsGary LaPook11 Feb, 21:01
Re: First trans-Atlantic Flights?Gary LaPook14 Feb, 19:29
Re: Magnetic variation changing faster than anticipatedGary LaPook26 Feb, 22:53
Re: Magnetic variation changing faster than anticipatedGary LaPook26 Feb, 23:06
Re: Magnetic variation changing faster than anticipatedGary LaPook28 Feb, 08:22
Re: Magnetic variation changing faster than anticipatedGary LaPook28 Feb, 09:05
Re: Magnetic variation changing faster than anticipatedGary LaPook28 Feb, 17:51
What level of english skills is needed for safe navigation?Gary LaPook28 Feb, 18:31
Bygrave sliderule for saleGary LaPook25 Mar, 21:16
Re: Northern Limits of Magnetic Compass UsefulnessGary LaPook4 Jun, 22:19
Re: Early Air Navigation with RDFGary LaPook4 Jun, 22:29
Re: Early Air Navigation with RDFGary LaPook4 Jun, 22:35
Re: How to round?Gary LaPook13 Jun, 05:18
Re: CP-300/U USAF Star FinderGary LaPook29 Jun, 07:32
Re: CP-300/U USAF Star FinderGary LaPook30 Jun, 04:39
Re: CP-300/U USAF Star FinderGary LaPook30 Jun, 17:17
Re: Finding stars in daylightGary LaPook13 Jul, 04:55
Re: Finding stars in daylightGary LaPook14 Jul, 00:17
We need a backup to GPSGary LaPook15 Jul, 23:07
Re: We need a backup to GPSGary LaPook17 Jul, 02:19
Re: Home made artificial horizonGary LaPook17 Jul, 02:24
Re: Parallel Sailing questionGary LaPook1 Aug, 17:08
Re: Kollsman Periscopic Bubble AdjustGary LaPook6 Aug, 00:55
Re: Kollsman Periscopic Bubble AdjustGary LaPook6 Aug, 01:08
Re: Kollsman Periscopic Bubble AdjustGary LaPook6 Aug, 18:12
Re: Kollsman Periscopic Bubble AdjustGary LaPook7 Aug, 05:41
Re: Kollsman Periscopic Bubble AdjustGary LaPook7 Aug, 11:50
Re: Kollsman Periscopic Bubble AdjustGary LaPook7 Aug, 12:07
Re: Zero-Altitude ShotGary LaPook4 Sep, 05:23
Re: Kollsman periscopic sextant mountGary LaPook4 Sep, 05:25
Re: Titanic's last starsGeoff Hitchcox1 May, 02:32
Re: Titanic's last starsGeoff Hitchcox2 May, 01:03
Re: Titanic's last starsGeoff Hitchcox3 May, 04:37
Re: Titanic's last starsGeoff Hitchcox5 May, 12:21
Re: A good clock for a few billion yearsGeoff Hitchcox6 May, 01:39
Re: Tide calculationGeoff Hitchcox4 Jun, 01:44
Re: Tide calculationGeoff Hitchcox4 Jun, 04:06
Re: Tide calculationGeoff Hitchcox5 Jun, 06:12
Re: Sighting errorsGeoffrey Kolbe8 Jan, 12:52
Re: Longitude by Lunar OccultationGeoffrey Kolbe8 Jan, 18:55
Re: Estimating distance on a Fractal WorldGeoffrey Kolbe14 Jan, 19:53
Re: Gyro sextantGeoffrey Kolbe27 Jan, 15:34
Re: Gyro sextantGeoffrey Kolbe28 Jan, 07:05
Re: GMT from Moon and Body Observed Altitudes...??Geoffrey Kolbe21 Feb, 07:21
Re: Ellipse of Confidence in position findingGeoffrey Kolbe17 Mar, 06:43
Re: Possible GPS Date Rollover problems week of April 6, 2019Geoffrey Kolbe1 Apr, 05:19
Re: Possible GPS Date Rollover problems week of April 6, 2019Geoffrey Kolbe7 Apr, 06:30
Re: Wikipedia article on Winslow Homer's "Eight Bells"Geoffrey Kolbe9 Apr, 07:55
Re: Northern Limits of Magnetic Compass UsefulnessGeoffrey Kolbe10 Apr, 06:28
Re: Sun Compass-Interesting UseGeoffrey Kolbe19 Apr, 06:22
Re: Sun Compass-Interesting UseGeoffrey Kolbe19 Apr, 06:40
Re: Consistent "away" intercepts. Why?Geoffrey Kolbe4 May, 08:37
Re: Consistent "away" intercepts. Why?Geoffrey Kolbe5 May, 07:44
Re: What do you do if horizon is not reliable?Geoffrey Kolbe18 May, 16:33
Re: Please recommend a good book or on-line courseGeoffrey Kolbe9 Jun, 16:24
Re: Please recommend a good book or on-line courseGeoffrey Kolbe10 Jun, 05:27
Re: Lost at Sea with a sextant puzzleGeoffrey Kolbe23 Jun, 12:18
Re: Lost at Sea with a sextant puzzleGeoffrey Kolbe24 Jun, 05:30
Re: Accuracy: main shades vs eyepiece shades?Geoffrey Kolbe27 Jul, 10:13
Plotting Tools?George F. Prescott4 Apr, 20:40
Re: Sextant RepairsGraham Dodd6 Aug, 23:17
Re: AzimuthsGrant Nixon4 Jul, 12:10
Re: Coordinate precision // SARGrant Nixon4 Jul, 18:43
Re: Multiplication by addition of logsGrant Nixon4 Sep, 13:34
Navigation mistakes in music...Greg Licfi11 Apr, 11:47
Re: Sighting errorsGreg Rudzinski7 Jan, 19:29
Re: ... few other mattersGreg Rudzinski8 Jan, 21:26
Re: Moby Dick TalesGreg Rudzinski10 Jan, 00:25
Re: A DIY Faraday cage: caveats and hints?Greg Rudzinski22 Jan, 15:16
Re: With the aid of CN, Van Den Heede wins the Golden Globe round-the-world raceGreg Rudzinski30 Jan, 18:35
Re: Any reading suggestions?Greg Rudzinski1 Feb, 13:04
Re: Northern Limits of Magnetic Compass UsefulnessGreg Rudzinski2 Feb, 19:33
Re: Examples of cocked hat far from equilateralGreg Rudzinski4 Feb, 21:27
Re: Examples of cocked hat far from equilateralGreg Rudzinski4 Feb, 22:07
Re: What sextant to buy ?Greg Rudzinski6 Feb, 13:08
Re: Northern Limits of Magnetic Compass UsefulnessGreg Rudzinski6 Feb, 20:41
Re: Examples of cocked hat far from equilateralGreg Rudzinski15 Feb, 18:39
Re: Examples of cocked hat far from equilateralGreg Rudzinski16 Feb, 13:11
Re: Mark 15 sextantsGreg Rudzinski1 Mar, 15:43
Ebbco Intercept Data using Davis Artificial HorizonGreg Rudzinski5 Mar, 20:48
Re: T Hav Doniol Sumner LOP ExampleGreg Rudzinski6 Mar, 14:54
Re: T Hav Doniol Sumner LOP ExampleGreg Rudzinski8 Mar, 20:00
Davis Artificial Horizon FiltersGreg Rudzinski16 Apr, 15:09
Re: Is All-Haversine SR the be-all and end-all?Greg Rudzinski17 Apr, 15:48
Re: Is All-Haversine SR the be-all and end-all?Greg Rudzinski18 Apr, 14:45
Re: Is All-Haversine SR the be-all and end-all?Greg Rudzinski18 Apr, 14:54
High Altitude Camera Bris Calibrated TrialsGreg Rudzinski22 Apr, 13:29
Re: High Altitude Camera Bris Calibrated TrialsGreg Rudzinski23 Apr, 12:17
Re: High Altitude Camera Bris Calibrated TrialsGreg Rudzinski23 Apr, 19:08
Re: Titanic's last starsGreg Rudzinski1 May, 11:27
Re: Consistent "away" intercepts. Why?Greg Rudzinski1 May, 22:45
Re: Titanic's last starsGreg Rudzinski2 May, 15:11
Collimation Error on C&P PlathGreg Rudzinski9 May, 14:13
Re: Logarithms: adding tenGreg Rudzinski11 May, 19:20
Re: I.C. and sunspotGreg Rudzinski13 May, 12:08
Re: I.C. and sunspotGreg Rudzinski13 May, 12:38
Re: I.C. and sunspotGreg Rudzinski13 May, 18:37
Re: I.C. and sunspotGreg Rudzinski13 May, 19:11
Re: Modern Celestial at Mystic Seaport, May 18-19Greg Rudzinski14 May, 20:42
Re: Calculators, cosines, and floating point computationGreg Rudzinski3 Jun, 12:12
Re: Calculators, cosines, and floating point computationGreg Rudzinski3 Jun, 13:09
Re: Asymmetry in i.c.Greg Rudzinski8 Jun, 11:28
Re: Artificial horizon plexiglass windscreen and refraction?Greg Rudzinski9 Jun, 16:07
Re: Azimuth graphGreg Rudzinski21 Jun, 14:38
Re: Azimuth graphGreg Rudzinski21 Jun, 14:45
Re: Azimuth graphGreg Rudzinski21 Jun, 18:10
Re: Lost at Sea with a sextant puzzleGreg Rudzinski23 Jun, 14:52
Sight reduction using a calculator's POL (arctan2) key - RevisitedGreg Rudzinski30 Jun, 13:44
Re: Sight reduction using a calculator's POL (arctan2) key - RevisitedGreg Rudzinski30 Jun, 20:10
Re: What makes man a Navigator?Greg Rudzinski2 Jul, 13:32
Re: Sight reduction using a calculator's POL (arctan2) key - RevisitedGreg Rudzinski3 Jul, 22:22
Lightning Strike CN ExerciseGreg Rudzinski10 Jul, 12:27
Re: Tamaya NC-88 on ebayGreg Rudzinski10 Jul, 16:30
Re: Lightning Strike CN ExerciseGreg Rudzinski11 Jul, 11:22
Re: Lightning Strike CN ExerciseGreg Rudzinski11 Jul, 11:32
Re: Lightning Strike CN ExerciseGreg Rudzinski11 Jul, 18:58
Re: Lightning Strike CN ExerciseGreg Rudzinski13 Jul, 13:34
Re: Lightning Strike CN ExerciseGreg Rudzinski15 Jul, 18:30
Re: Lightning Strike CN ExerciseGreg Rudzinski15 Jul, 19:05
Re: Accuracy: main shades vs eyepiece shades?Greg Rudzinski25 Jul, 14:56
Re: Freiberger Sirius Sextant ReveiwGreg Rudzinski28 Jul, 01:01
Re: Parallel Sailing questionGreg Rudzinski1 Aug, 14:36
Re: Parallel Sailing questionGreg Rudzinski1 Aug, 22:01
Re: Navigating USS Nautilus in 1958Greg Rudzinski4 Aug, 23:37
Re: Sextant octant rubber eyepad preservationGreg Rudzinski14 Aug, 15:43
Re: What is a good sextant to buy?Greg Rudzinski5 Sep, 17:40
Re: High Altitude Camera Bris Calibrated TrialsGregg Jarrette23 Apr, 18:22
Re: Article: GPS Jamming, Spoofing, and BackupsGregg Jarrette23 Apr, 18:45
Re: High Altitude Camera Bris Calibrated TrialsGregg Jarrette23 Apr, 20:37
SlideRule usesHerman Dekker12 Jan, 10:04
Declination magneticHerman Dekker12 Jan, 10:23
Re: ADMIN NavList on small screensHerman Dekker7 Feb, 09:01
Latitude at Noon and Midnight.Herman Dekker15 Feb, 01:36
Re: Latitude at Noon and Midnight.Herman Dekker15 Feb, 16:51
Lunar with Davis MKIII Sextant?Herman Dekker20 Feb, 17:06
Re: GPS Anti Spoof app updateHerman Dekker5 Apr, 05:44
Re: Wikipedia article on Winslow Homer's "Eight Bells"Herman Dekker9 Apr, 09:50
Re: Modern Celestial at Mystic Seaport, May 18-19Herman Dekker14 May, 20:11
Re: Modern Celestial at Mystic Seaport, May 18-19Herman Dekker19 May, 08:10
Re: Easy star-to-star distance correctionsHerman Dekker22 May, 15:23
Re: Easy star-to-star distance correctionsHerman Dekker23 May, 07:18
Which stars are circumpolair at 52° N?Herman Dekker29 May, 14:10
Re: What makes man a Navigator?Herman Dekker2 Jul, 09:31
GMT of lunar altitudes when possible?Herman Dekker7 Jul, 14:58
Re: GMT of lunar altitudes when possible?Herman Dekker8 Jul, 20:07
Re: GMT of lunar altitudes when possible?Herman Dekker10 Jul, 16:15
Re: The Improved Suns Table4 from HO249Herman Dekker29 Aug, 21:12
Re: The Improved Suns Table4 from HO249Herman Dekker30 Aug, 21:26
Re: The Improved Suns Table4 from HO249Herman Dekker31 Aug, 12:52
Re: The Improved Suns Table4 from HO249Herman Dekker3 Sep, 18:27
Re: The Improved Suns Table4 from HO249Herman Dekker3 Sep, 19:52
Re: What level of english skills is needed for safe navigation?Hewitt Schlereth1 Mar, 22:49
Fwd: Saturn photoHewitt Schlereth24 Apr, 23:32
Re: Please recommend a good book or on-line courseHewitt Schlereth30 May, 00:19
Re: GPS Anti Spoof Pro, for iOSHewitt Schlereth10 Jun, 03:45
Re: Circumference of the Earth, 240BCHewitt Schlereth21 Jun, 20:24
Re: Henry Hughes Sextant (No. 5154)Hewitt Schlereth26 Jun, 23:30
Index mirror typeIgor S.18 Mar, 21:48
Re: Mirror recoatingIgor S.26 Mar, 15:41
I.C. and sunspotIgor S.12 May, 18:47
Re: I.C. and sunspotIgor S.17 May, 01:12
Details of Freiberger AHIgor S.17 May, 16:52
Re: What do you do if horizon is not reliable?Igor S.19 May, 20:26
Re: What do you do if horizon is not reliable?Igor S.20 May, 20:59
SpaceX Starlink Satellites & AHIgor S.26 May, 21:50
Re: Das Boot film and sextantIgor S.28 May, 09:17
Re: Please recommend a good book or on-line courseIgor S.29 May, 12:13
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechIgor S.1 Jun, 01:15
Asymmetry in i.c.Igor S.8 Jun, 01:30
Re: Asymmetry in i.c.Igor S.11 Jun, 08:58
Re: How to round?Igor S.13 Jun, 00:12
C&P bubble sextant - practical issuesIgor S.13 Jun, 13:39
Re: C&P bubble sextant - practical issuesIgor S.16 Jun, 22:10
Re: C&P bubble sextant - practical issuesIgor S.21 Jun, 23:59
Re: Lost at Sea with a sextant puzzleIgor S.23 Jun, 23:04
Re: Lost at Sea with a sextant puzzleIgor S.24 Jun, 23:49
Re: Lost at Sea with a sextant puzzleIgor S.25 Jun, 00:13
Re: Optical bench for sextants?Igor S.9 Jul, 11:04
C&P AH: size of the bubbleIgor S.13 Jul, 11:28
Mirror AH - safety firstIgor S.23 Jul, 22:44
Re: Mirror AH - safety firstIgor S.26 Jul, 21:37
A novel material for mirror AH ?Igor S.14 Aug, 17:33
Re: A novel material for mirror AH ?Igor S.16 Aug, 19:57
Re: A novel material for mirror AH ?Igor S.16 Aug, 20:07
Re: A novel material for mirror AH ?Igor S.19 Aug, 13:15
Side error asymmetryIgor S.21 Aug, 09:57
Re: Side error asymmetryIgor S.23 Aug, 23:52
Re: Shoot a lunar tomorrowIgor S.26 Aug, 23:29
All Weather Sextant - The RadiosextantIgor S.30 Aug, 15:45
Call for owners of Freiberger AHIgor S.11 Sep, 21:16
Re: Lunar HaloIgor S.16 Sep, 07:15
Re: Lunar HaloIgor S.16 Sep, 13:28
Moon meridian passage and its TiltIgor S.17 Sep, 23:14
Re: It's 2019...Jackson McDonald1 Jan, 15:13
Re: A lunar in 1845Jackson McDonald3 Jan, 17:57
Re: Moby Dick TalesJackson McDonald10 Jan, 20:55
Re: Moby Dick TalesJackson McDonald18 Jan, 21:53
New Year's resolutionsJackson McDonald18 Jan, 22:40
Why paper maps still matter in the digital ageJackson McDonald23 Jan, 11:36
More on the North Magnetic Pole (NYT)Jackson McDonald5 Feb, 07:20
Re: More on the North Magnetic Pole (NYT)Jackson McDonald5 Feb, 17:41
GPS rolloverJackson McDonald23 Feb, 10:46
Re: Mercury in retrogradeJackson McDonald9 Mar, 11:58
Old stone walls record the changing location of magnetic northJackson McDonald12 Mar, 13:22
Article: Follow Canopus, Not Your CompassJackson McDonald26 Mar, 11:21
Radar sundialJackson McDonald6 Jun, 17:19
GPS degraded?Jackson McDonald10 Jun, 00:32
GPS Anti Spoof AppJackson McDonald11 Jun, 20:29
Celestial Navigation TriptychJackson McDonald24 Jul, 01:39
Navigator, Dead Reckoning bagJackson McDonald26 Aug, 17:58
Re: Kollsman periscopic sextant mountJacob M. Huffman III25 Jan, 01:33
Re: Plotting Tools?Jacob M. Huffman III5 Apr, 04:05
Re: Early Air Navigation with RDFJacob M. Huffman III17 Apr, 23:09
Re: Coordinate precision // SARJames F Campbell4 Jul, 18:04
Re: The Geometry of Elliptical Probability Contours for a Fix using Multiple Lines of PositionJames F Campbell16 Aug, 18:57
Re: Any reading suggestions?James Hofmann4 Feb, 18:46
Back Up to GPSJay Phelan19 Jul, 18:46
Parallel Sailing questionJayson David31 Jul, 21:09
Re: Parallel Sailing questionJayson David1 Aug, 17:46
HO-229 AbridgmentJean Villemagne16 May, 01:51
Mark-IX-A bubble sextant calibration reportJean Villemagne23 May, 01:14
Re: Mark-IX-A bubble sextant calibration reportJean Villemagne23 May, 22:45
Re: Mark-IX-A bubble sextant calibration reportJean Villemagne24 May, 17:31
Re: Mark-IX-A bubble sextant calibration reportJean Villemagne24 May, 19:21
Re: Mark-IX-A bubble sextant calibration reportJean Villemagne24 May, 21:55
Re: Mark-IX-A bubble sextant calibration reportJean Villemagne25 May, 01:27
Re: Mark-IX-A bubble sextant calibration reportJean Villemagne28 May, 12:59
Re: Mark-IX-A bubble sextant calibration reportJean Villemagne31 May, 13:20
Old batteries from WWII found in a MARK-IX-A handleJean Villemagne2 Jun, 01:02
Mark-IX-A bubble sextant calibration station detailsJean Villemagne2 Jun, 01:19
Re: Mark-IX-A bubble sextant calibration station detailsJean Villemagne7 Jun, 01:16
Kollsman Periscopic Bubble AdjustJeff Gagnon5 Aug, 15:42
Re: Kollsman Periscopic Bubble AdjustJeff Gagnon7 Aug, 03:50
Re: Kollsman Periscopic Bubble AdjustJeff Gagnon9 Aug, 02:38
Re: Zenith FixesJeremy C26 Mar, 13:13
Re: Zenith FixesJeremy C26 Mar, 13:20
Re: I.C. and sunspotJeremy C14 May, 10:25
Re: Lunars "data collection form"Jeremy C21 Jun, 10:08
Re: What makes man a Navigator?Jeremy C2 Jul, 09:10
Re: Tamaya NC-88 on ebayJeremy C11 Jul, 10:26
Re: What is a good sextant to buy?Jeremy C3 Sep, 11:15
Stark's Lunar Tables: log decJeremy Clark9 Jun, 14:56
Re: Stark's Lunar Tables: log decJeremy Clark9 Jun, 20:48
Re: Stark's Lunar Tables: log decJeremy Clark9 Jun, 21:56
Stellarium Program as practice toolJerry Mason7 Jun, 18:22
Re: Please recommend a good book or on-line courseJerry Mason7 Jun, 19:37
Re: Stellarium Program as practice toolJerry Mason7 Jun, 22:11
Please recommend a good book or on-line courseJerry Woodward28 May, 16:05
Re: Mirror recoatingJim Hickey27 Mar, 13:10
Re: Mirror recoatingJim Hickey27 Mar, 19:52
Re: Early Air Navigation with RDFJoe Suligoy21 Apr, 21:49
Re: Early Air Navigation with RDFJoe Suligoy22 Apr, 23:14
Re: Please recommend a good book or on-line courseJoe Suligoy29 May, 14:43
Artificial horizon plexiglass windscreen and refraction?Joe Suligoy9 Jun, 04:08
Sighting errorsJoel Lynn7 Jan, 17:54
Re: Sighting errorsJoel Lynn7 Jan, 22:09
Re: Sighting errorsJoel Lynn8 Jan, 01:11
Re: Sighting errorsJoel Lynn8 Jan, 19:17
LORAN over boardJohn Carbone20 Aug, 11:35
Re: Leveling of artificial horizonJohn D. Howard8 Jan, 22:52
Re: Moby Dick TalesJohn D. Howard10 Jan, 04:30
Re: Estimating distance on a Fractal WorldJohn D. Howard15 Jan, 16:11
Re: Why no airtraffic over Antarctica?John D. Howard19 Jan, 22:57
Re: Why no airtraffic over Antarctica?John D. Howard20 Jan, 17:21
Re: Flying to AntarcticaJohn D. Howard20 Jan, 19:02
Re: Flying to AntarcticaJohn D. Howard21 Jan, 02:09
Re: Pointless? Optimisation - Intercept PlottingJohn D. Howard4 Feb, 21:24
Re: ADMIN NavList on small screensJohn D. Howard6 Feb, 20:58
Re: More on the North Magnetic Pole (NYT)John D. Howard7 Feb, 00:23
Re: Magnetic variation changing faster than anticipatedJohn D. Howard25 Feb, 23:47
Re: Magnetic variation changing faster than anticipatedJohn D. Howard1 Mar, 00:09
Re: What level of english skills is needed for safe navigation?John D. Howard1 Mar, 00:20
Re: Wind Velocity from Three DriftsJohn D. Howard1 Mar, 18:33
Re: Ebony OctantJohn D. Howard12 Mar, 02:47
Re: Today’s the Spring EquinoxJohn D. Howard20 Mar, 23:32
Douglas-Appleyard Arcless SextantJohn D. Howard29 Mar, 16:09
Re: Douglas-Appleyard Arcless SextantJohn D. Howard31 Mar, 16:41
Douglas-Appleyard Arcless Sextant - HelpJohn D. Howard31 Mar, 18:53
Re: GPS Anti Spoof app updateJohn D. Howard2 Apr, 15:14
Re: GPS Anti Spoof app updateJohn D. Howard3 Apr, 02:25
Re: Is All-Haversine SR the be-all and end-all?John D. Howard18 Apr, 18:58
Re: First commercial aircraft with GPSJohn D. Howard20 Apr, 21:27
Re: Consistent "away" intercepts. Why?John D. Howard2 May, 21:03
Re: Modern Celestial at Mystic Seaport, May 18-19John D. Howard12 May, 02:25
Re: UL vs LL: which is which when an artificial horizon is involved?John D. Howard14 May, 18:46
Re: Is it possible to improve the presentation of this forum ?John D. Howard17 May, 03:08
Re: Please recommend a good book or on-line courseJohn D. Howard28 May, 18:14
Re: Artificial horizon plexiglass windscreen and refraction?John D. Howard9 Jun, 13:52
Re: Using the Anti Spoofing AppJohn D. Howard11 Jun, 15:47
Re: Ancient ObservatoriesJohn D. Howard4 Jul, 21:34
Re: GMT of lunar altitudes when possible?John D. Howard8 Jul, 18:39
Re: Finding stars in daylightJohn D. Howard12 Jul, 22:29
Re: Finding stars in daylightJohn D. Howard13 Jul, 16:59
Re: Finding stars in daylightJohn D. Howard14 Jul, 16:32
Re: Finding stars in daylightJohn D. Howard14 Jul, 16:50
Re: Celestial Navigation in the MoviesJörg Reinhardt26 May, 21:08
Re: Plotting Tools?Jürgen Hoefeld5 Apr, 17:27
Re: Kollsman periscopic sextant mountKen Gebhart24 Jan, 23:12
Re: Early Air Navigation with RDFKen Gebhart17 Apr, 15:54
Re: SNO-T for export ?Ken Gebhart3 May, 20:25
Re: Navigation Library for sale (K Gebhart)Ken Gebhart16 May, 21:26
Henry Hughes Sextant (No. 5154)Kostas B28 May, 10:26
Re: Henry Hughes Sextant (No. 5154)Kostas B29 May, 23:23
Longitude inLars Bergman3 Jan, 19:37
Re: Alain Gerbault logbookLars Bergman10 Jan, 11:18
Re: Alain Gerbault logbookLars Bergman10 Jan, 19:59
Re: Alain Gerbault logbookLars Bergman12 Jan, 14:15
Re: Alain Gerbault logbookLars Bergman13 Jan, 14:06
Re: Celestial Navigation in 1866Lars Bergman17 Feb, 11:34
Re: T Hav Doniol Sumner LOP ExampleLars Bergman9 Mar, 21:11
Re: Star-to-star distance for sextant calibration?Lars Bergman20 May, 20:41
Re: Landmark sightsLars Bergman6 Aug, 16:01
Re: A novel material for mirror AH ?Lewis Howell14 Aug, 18:13
Celestial Navigation in 1866Lloyd Browne17 Feb, 03:24
Re: Celestial Navigation in 1866Lloyd Browne17 Feb, 09:13
Earth's Magnetic North Pole is moving more and more quicklyLu Abel13 Jan, 18:18
So much for the lunar eclipseLu Abel27 Jan, 16:57
Re: Old stone walls record the changing location of magnetic northLu Abel12 Mar, 21:35
Re: Possible GPS Date Rollover problems week of April 6, 2019Lu Abel27 Mar, 00:23
Can humans sense the earth's magnetic field?Lu Abel29 Apr, 15:30
Re: GPS degraded?Lu Abel10 Jun, 02:17
Re: GPS Anti Spoof Pro, for iOSLu Abel16 Jun, 17:55
Re: LORAN over boardLu Abel21 Aug, 15:19
Re: Life on the OceanLuc Van den Borre14 Jan, 16:37
Re: Life on the OceanLuc Van den Borre14 Jan, 17:52
Re: What sextant to buy ?Luc Van den Borre6 Feb, 20:28
Re: Comet Donati above Paris 1858Luc Van den Borre21 Apr, 23:52
Re: Comet Donati above Paris 1858Luc Van den Borre22 Apr, 00:22
Re: Life on the OceanLuc Van den Borre3 May, 21:08
Re: Japanese bubble sextant or else ?Luc Van den Borre1 Jul, 08:50
Re: C&P AH: size of the bubbleLuc Van den Borre13 Jul, 17:14
Re: A navigator's photo with really HUGE wrist-watch?Luc Van den Borre22 Jul, 19:15
Re: Freiberger Sirius Sextant ReveiwLuc Van den Borre28 Jul, 18:37
SunshotManuel Guerra21 Jul, 17:34
Makeover for MaskelyneMarcelo S18 Jan, 22:46
Re: Moby Dick TalesMark Coady14 Jan, 01:58
CNAV and Rearranging the mass of the earth's water?Mark Coady23 Jan, 13:47
Re: CNAV and Rearranging the mass of the earth's water?Mark Coady24 Jan, 00:34
Re: Live AIS trackingMark Coady24 Jan, 01:26
Re: A DIY Faraday cage: caveats and hints?Mark Coady24 Jan, 03:32
Re: In memoriam: Stan KleinMark Coady28 Jan, 19:46
Re: GPS for chickens and spinachMark Coady25 Feb, 01:53
Magnetic variation changing faster than anticipatedMark Coady25 Feb, 02:14
Re: Magnetic variation changing faster than anticipatedMark Coady27 Feb, 05:06
Re: Magnetic variation changing faster than anticipatedMark Coady28 Feb, 02:03
3D Navigation software questionMark Coady8 Mar, 20:42
Re: GPS Anti Spoof app updateMark Coady18 Apr, 01:48
Re: Life on the OceanMichael Bradley14 Jan, 22:37
Re: Sir John Franklin's artificial horizonMichael Bradley31 Jan, 15:53
Pointless? Optimisation - Intercept PlottingMichael Bradley1 Feb, 19:25
Re: Pointless? Optimisation - Intercept PlottingMichael Bradley1 Feb, 22:09
Re: Pointless? Optimisation - Intercept PlottingMichael Bradley2 Feb, 10:27
Re: Pointless? Optimisation - Intercept PlottingMichael Bradley3 Feb, 22:40
Re: Pointless? Optimisation - Intercept PlottingMichael Bradley4 Feb, 19:54
Re: What sextant to buy ?Michael Bradley7 Feb, 12:08
Re: Mark 15 sextantsMichael Bradley1 Mar, 08:58
Re: Mark 15 sextantsMichael Bradley1 Mar, 17:47
Re: Ebbco Intercept Data using Davis Artificial HorizonMichael Bradley5 Mar, 23:20
Re: Moon's crescent when viewed from low latitudesMichael Bradley13 Mar, 00:34
Star to Star Distance Sextant CalibrationMichael Bradley10 Apr, 21:59
Re: Star to Star Distance Sextant CalibrationMichael Bradley11 Apr, 22:39
Re: Consistent "away" intercepts. Why?Michael Bradley2 May, 22:39
Re: Star-to-star distance for sextant calibration?Michael Bradley20 May, 18:05
Re: Star-to-star distance for sextant calibration?Michael Bradley20 May, 18:20
Re: Easy star-to-star distance correctionsMichael Bradley22 May, 19:27
Re: Henry Hughes Sextant (No. 5154)Michael Bradley29 May, 22:12
Re: Lightning Strike CN ExerciseMichael Bradley15 Jul, 10:07
Re: Accuracy: main shades vs eyepiece shades?Michael Bradley25 Jul, 19:50
Re: The Improved Suns Table4 from HO249Michael Bradley31 Aug, 09:30
Re: What is a good sextant to buy?Michael Bradley10 Sep, 07:44
Re: What is a good sextant to buy?Michael Bradley13 Sep, 18:52
Re: Moon, Venus and Jupiter todayMike Burkes3 Feb, 15:41
Re: Zenith FixesMike Burkes22 Mar, 15:37
Followup on USS Fitzgerald CollisionMike Mayer15 Jan, 13:07
Re: Coordinate precisionMike Mayer4 Jul, 12:08
Galileo Sat-Nav System Still Without ServiceMike Mayer15 Jul, 18:34
Re: Bessel's solution of lunar distancesMurray Peake18 Mar, 12:59
Re: Freiberger Sirius Sextant ReveiwPatrick pont27 Jul, 21:45
Re: Freiberger Sirius Sextant ReveiwPatrick pont28 Jul, 11:08
Re: Freiberger Sirius Sextant ReveiwPatrick pont28 Jul, 11:12
Help ... Tamaya NC 88Patrick pont7 Aug, 11:29
Re: Help ... Tamaya NC 88Patrick pont9 Aug, 08:23
Freiberger PTS 62 ?Patrick pont18 Sep, 11:44
Alain Gerbault logbookPaul Bedel8 Jan, 20:21
Re: Alain Gerbault logbookPaul Bedel11 Jan, 14:35
Re: Alain Gerbault logbookPaul Bedel13 Jan, 10:43
Re: Alain Gerbault logbookPaul Bedel15 Jan, 16:46
Re: Sarl-CPI sextantsPaul Bedel20 Mar, 11:04
Re: Gyro sextantPaul Brewer24 Jan, 21:17
Re: Gyro sextantPaul Brewer25 Jan, 09:08
Re: Gyro sextantPaul Brewer25 Jan, 21:01
Re: Gyro sextantPaul Brewer25 Jan, 22:41
Re: SlideRule usesPaul Dolkas14 Jan, 04:27
Re: CN on the Moon: where are its' poles?Paul Dolkas16 Jan, 17:20
Re: Earthrise.Paul Dolkas1 May, 04:32
Re: Early Air Navigation with RDFPaul Dolkas1 May, 04:32
Re: Fogging OpticsPaul Dolkas14 May, 04:03
Re: Fogging OpticsPaul Dolkas15 May, 04:11
Re: Apollo SextantPaul Dolkas19 Jul, 04:42
Re: Apollo SextantPaul Dolkas30 Jul, 04:35
World Magnetic Model updatePaul Hirose10 Jan, 21:41
Re: Longitude by Lunar OccultationPaul Hirose11 Jan, 04:24
Re: Longitude by Lunar OccultationPaul Hirose12 Jan, 08:47
Re: Longitude by Lunar OccultationPaul Hirose12 Jan, 21:20
Re: Longitude by Lunar OccultationPaul Hirose13 Jan, 23:16
Re: Any reading suggestions?Paul Hirose1 Feb, 20:39
Re: Pointless? Optimisation - Intercept PlottingPaul Hirose3 Feb, 19:27
Re: Pointless? Optimisation - Intercept PlottingPaul Hirose4 Feb, 20:06
Re: Latitude at Noon and Midnight.Paul Hirose15 Feb, 19:55
Re: GMT from Moon and Body Observed Altitudes...??Paul Hirose18 Feb, 21:25
"hack" as a nounPaul Hirose18 Feb, 21:25
Resilvering sextant mirror, 1919Paul Hirose2 Mar, 05:00
Mercury in retrogradePaul Hirose7 Mar, 22:18
Re: Mercury in retrogradePaul Hirose8 Mar, 19:15
Re: Short Term Proper MotionPaul Hirose10 Mar, 23:37
Re: Short Term Proper MotionPaul Hirose13 Mar, 03:42
Re: Short Term Proper MotionPaul Hirose13 Mar, 17:40
B-24 mission to MühldorfPaul Hirose16 Mar, 21:06
Re: Today’s the Spring EquinoxPaul Hirose23 Mar, 05:52
Re: Today’s the Spring EquinoxPaul Hirose25 Mar, 22:53
Re: Mirror recoatingPaul Hirose26 Mar, 21:44
Re: Kollsman periscopic sextant mountPaul Hirose30 Mar, 21:41
Re: Possible GPS Date Rollover problems week of April 6, 2019Paul Hirose30 Mar, 21:41
Re: Today’s the Spring EquinoxPaul Hirose7 Apr, 04:48
SofaJpl page is downPaul Hirose8 Apr, 20:00
Re: SofaJpl page is downPaul Hirose10 Apr, 21:35
Re: Star to Star Distance Sextant CalibrationPaul Hirose12 Apr, 02:52
Re: Early Air Navigation with RDFPaul Hirose17 Apr, 19:33
Re: Titanic's last starsPaul Hirose1 May, 23:27
Re: SofaJpl page is downPaul Hirose10 May, 22:51
Re: HO 211 (Ageton) sight reduction accuracyPaul Hirose12 May, 21:27
Re: UL vs LL: which is which when an artificial horizon is involved?Paul Hirose14 May, 22:32
Telegraphic longitudePaul Hirose14 May, 23:10
Re: Deneb, Altair and SaturnPaul Hirose16 May, 20:03
Re: Star-to-star distance for sextant calibration?Paul Hirose20 May, 22:50
Re: Star-to-star distance for sextant calibration?Paul Hirose22 May, 05:47
Re: Lunar distance presetting exercisePaul Hirose27 May, 21:02
Re: Calculators, cosines, and floating point computationPaul Hirose5 Jun, 06:10
Re: Calculators, cosines, and floating point computationPaul Hirose10 Jun, 06:56
Re: Greenwich 19th and 20th c conventionsPaul Hirose10 Jun, 23:08
Rudder commandsPaul Hirose12 Jun, 05:06
Re: How to round?Paul Hirose13 Jun, 23:12
Peculiar definition of sun set/risePaul Hirose22 Jun, 00:45
Re: Coordinate precisionPaul Hirose3 Jul, 23:37
Re: Ancient ObservatoriesPaul Hirose4 Jul, 23:41
Re: Finding stars in daylightPaul Hirose15 Jul, 05:59
Re: Peculiar definition of sun set/risePaul Hirose16 Jul, 23:20
Azimuth / elevation from sextant observationsPaul Hirose30 Jul, 21:26
Chauvenet on his lunar methodPaul Hirose3 Aug, 03:37
Re: Landmark sightsPaul Hirose7 Aug, 20:47
Re: Landmark sightsPaul Hirose10 Aug, 04:15
Fwd: From Celestial to Terrestrial Timekeeping: New book...Paul Hirose17 Aug, 16:34
Hermetically sealed sextant mirrorsPaul Hirose29 Aug, 21:43
Re: Zero-Altitude ShotPaul Hirose7 Sep, 04:14
Re: Zero-Altitude ShotPaul Hirose9 Sep, 03:50
Re: Zero-Altitude ShotPaul Hirose11 Sep, 16:49
Re: Declination magneticPaul Hughes12 Jan, 18:32
Correcting declination for longitudePaul Hughes18 Jan, 19:05
Re: Historical tidesPaul Hughes17 Feb, 06:05
Re: Historical tidesPaul Hughes17 Feb, 16:10
Re: Historical tidesPaul Hughes20 Feb, 16:47
Re: Magnetic variation changing faster than anticipatedPaul Hughes25 Feb, 19:07
Re: Finding stars in daylightPaul Jackson2 Jul, 02:44
Re: Dating Hughes and Son sextantsPaul S18 Jun, 17:12
Dr. Gladys West, inducted into Air Force Hall Of FamePaul Saffo20 Jan, 19:08
Re: High Altitude Camera Bris Calibrated TrialsPaul Saffo24 Apr, 19:14
Nat Geo Botswana sky fake!Paul Saffo8 May, 16:33
Re: In memoriam: Stan KleinPete Solon Palmer29 Jan, 18:37
Re: Calculators, cosines, and floating point computationPete Solon Palmer5 Jun, 21:09
Re: Android App for celestial navigation, free betaPete Solon Palmer10 Jun, 20:30
Re: How to round?Pete Solon Palmer13 Jun, 22:23
10 years of Navigation SpreadsheetsPeter Hakel20 Feb, 15:29
Lunar distance presetting exercisePeter Hakel26 May, 16:30
Re: Lunar distance presetting exercisePeter Hakel26 May, 20:40
Re: SunshotPeter Hakel24 Jul, 12:33
Re: Parallel Sailing questionPeter Hakel1 Aug, 04:48
Re: Sighting errorsPeter Monta7 Jan, 21:36
Re: Short Term Proper MotionPeter Monta11 Mar, 00:43
Re: Mirror recoatingPeter Monta27 Mar, 15:50
Re: Mirror recoatingPeter Monta27 Mar, 15:58
Re: Mirror recoatingPeter Monta27 Mar, 16:07
Re: Possible GPS Date Rollover problems week of April 6, 2019Peter Monta7 Apr, 22:55
Re: Wikipedia article on Winslow Homer's "Eight Bells"Peter Monta9 Apr, 03:18
Re: First commercial aircraft with GPSPeter Monta21 Apr, 19:33
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechPeter Monta3 Jun, 01:03
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechPeter Monta3 Jun, 01:20
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechPeter Monta3 Jun, 01:28
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechPeter Monta3 Jun, 04:16
Re: Coordinate precisionPeter Monta4 Jul, 08:29
Re: Old Garmin GPS devicePeter Monta29 Jul, 03:33
GPS Anti-Spoof feature requestPeter Monta30 Jul, 02:44
Re: GPS Anti-Spoof feature requestPeter Monta31 Jul, 10:13
Re: Azimuth / elevation from sextant observationsPeter Monta31 Jul, 10:22
Landmark sightsPeter Monta5 Aug, 09:33
Re: Landmark sightsPeter Monta7 Aug, 01:45
Re: Landmark sightsPeter Monta9 Aug, 07:20
Re: Side error asymmetryPeter Monta21 Aug, 14:15
Re: Historical tidesPeter Smith16 Feb, 14:46
Re: Help ... Tamaya NC 88Philippe Posth20 Aug, 18:22
Re: What is a good sextant to buy?Philippe Posth3 Sep, 11:50
Radio Time signalsPosth P9 Jan, 10:26
Compatibility Freiberger / SNO-TPosth P31 Jan, 07:36
Re: Index mirror typePosth P19 Mar, 10:12
Is it possible to improve the presentation of this forum ?Posth P15 May, 14:39
Re: C&P bubble sextant - practical issuesPosth P17 Jun, 16:04
Re: The Dunlap Sunrise Sunset ComputerRafal O.12 Feb, 16:36
Re: The Dunlap Sunrise Sunset ComputerRafal O.12 Feb, 19:54
Re: The Dunlap Sunrise Sunset ComputerRafal O.13 Feb, 07:31
Re: The Dunlap Sunrise Sunset ComputerRafal O.14 Feb, 07:11
Re: The Dunlap Sunrise Sunset ComputerRafal O.14 Feb, 09:25
Re: The Dunlap Sunrise Sunset ComputerRafal O.15 Feb, 18:34
Re: Possible GPS Date Rollover problems week of April 6, 2019Richard B. Langley28 Mar, 12:01
Air Force Lab Plans R&D into Celestial-Aided Navigation TechRichard B. Langley31 May, 13:29
GPS 3 and the history of GPSRichard Easton14 Jan, 22:53
Troughton and Simms SextantRichard Kennedy7 Apr, 20:57
Re: Troughton and Simms SextantRichard Kennedy8 Apr, 21:39
Re: Troughton and Simms SextantRichard Kennedy8 Apr, 21:45
Re: Troughton and Simms SextantRichard Kennedy17 Apr, 10:53
Re: Artificial Horizon, K & E USN No. 6Rick S7 Sep, 18:53
Re: Moby Dick TalesRobert Eno10 Jan, 05:36
Re: C&P bubble sextant - practical issuesRobert Eno14 Jun, 15:46
Re: Bessel's solution of lunar distancesRobert H. van Gent18 Mar, 09:23
Ahab's Arithmetic; or, the mathematics of Moby-DickRobert H. van Gent29 Mar, 09:45
Re: Astronomical panorama location and dateRobert H. van Gent20 May, 09:26
Re: Astronomical panorama location and dateRobert H. van Gent21 May, 07:58
Re: Constellations in "Moana"Robert H. van Gent28 Jun, 07:39
Re: Constellations in "Moana"Robert H. van Gent28 Jun, 07:46
Re: Age of Sail Navigation Weekend and a Lunars DayRobert Pearson17 Sep, 05:06
Re: Welcome to the New YearRobert VanderPol II1 Jan, 21:50
Re: CN on the Moon: where are its' poles?Robert VanderPol II16 Jan, 16:04
Re: Why no airtraffic over Antarctica?Robert VanderPol II20 Jan, 17:18
Re: A DIY Faraday cage: caveats and hints?Robert VanderPol II22 Jan, 14:31
Re: Search Party Reaches Last Known Endurance LocationRobert VanderPol II11 Feb, 13:55
Re: Search Party Reaches Last Known Endurance LocationRobert VanderPol II12 Feb, 01:59
Re: Brown-Nassau CN PlotterRobert VanderPol II13 Feb, 03:59
Re: Brown-Nassau CN PlotterRobert VanderPol II13 Feb, 22:34
Re: Brown-Nassau CN PlotterRobert VanderPol II13 Feb, 22:36
Re: Donald Crowhurst shooting the SunRobert VanderPol II26 Feb, 05:43
Re: Magnetic variation changing faster than anticipatedRobert VanderPol II28 Feb, 16:03
Re: Earthrise.Robert VanderPol II1 May, 04:21
Re: A good clock for a few billion yearsRobert VanderPol II6 May, 04:12
Re: HO 211 (Ageton) sight reduction accuracyRobert VanderPol II11 May, 16:06
Re: UL vs LL: which is which when an artificial horizon is involved?Robert VanderPol II14 May, 22:51
Re: Calculators, cosines, and floating point computationRobert VanderPol II3 Jun, 03:44
Re: How to round?Robert VanderPol II13 Jun, 13:36
Re: CP-300/U USAF Star FinderRobert VanderPol II28 Jun, 01:32
Re: What makes man a Navigator?Robert VanderPol II2 Jul, 04:44
Re: What makes man a Navigator?Robert VanderPol II3 Jul, 00:26
Re: What makes man a Navigator?Robert VanderPol II3 Jul, 12:54
Re: Distance off, by sextant angleRobert VanderPol II18 Jul, 16:48
Re: Accuracy: main shades vs eyepiece shades?Robert VanderPol II27 Jul, 01:33
Re: Optimal HoE?Robert VanderPol II20 Aug, 08:01
Re: A sextant in pop cultureRobert VanderPol II18 Sep, 04:05
Re: Radio Time signalsRobert Wyatt9 Jan, 20:14
Re: A DIY Faraday cage: caveats and hints?Robert Wyatt22 Jan, 15:33
Re: Sun and moon at the North Pole.Robert Wyatt29 Jan, 17:18
Re: Polaris - changes in SHA and DeclinationRobert Wyatt22 Feb, 19:02
Re: Spur of the moment long by chronRobin Stuart5 Jan, 19:35
Longitude by Lunar OccultationRobin Stuart8 Jan, 16:27
Re: Longitude by Lunar OccultationRobin Stuart8 Jan, 20:35
Re: Longitude by Lunar OccultationRobin Stuart8 Jan, 20:56
Re: Longitude by Lunar OccultationRobin Stuart11 Jan, 18:50
Re: Longitude by Lunar OccultationRobin Stuart13 Jan, 17:41
Life on the OceanRobin Stuart14 Jan, 15:14
Extra! Extra! Read all about it.Robin Stuart14 Jan, 15:50
Re: Longitude by Lunar OccultationRobin Stuart14 Jan, 18:59
Re: Life on the OceanRobin Stuart14 Jan, 20:52
Oh No! Fundamental flaw in celestial navigation revealed!Robin Stuart17 Jan, 16:07
Re: Finding great circle apex?Robin Stuart17 Jan, 19:22
Re: Makeover for MaskelyneRobin Stuart19 Jan, 14:04
Re: Sir John Franklin's artificial horizonRobin Stuart31 Jan, 12:40
Re: Noticed by the James Caird Society!Robin Stuart8 Feb, 17:47
Re: Celestial Navigation in 1866Robin Stuart17 Feb, 18:23
Re: An analytical solution of the two star sight problem of celestial navigationRobin Stuart6 Mar, 17:51
Re: An analytical solution of the two star sight problem of celestial navigationRobin Stuart8 Mar, 18:59
Re: Old stone walls record the changing location of magnetic northRobin Stuart12 Mar, 20:24
Re: An analytical solution of the two star sight problem of celestial navigationRobin Stuart15 Mar, 15:07
Re: Ellipse of Confidence in position findingRobin Stuart15 Mar, 20:18
Re: Ellipse of Confidence in position findingRobin Stuart15 Mar, 20:40
Re: Ellipse of Confidence in position findingRobin Stuart17 Mar, 16:05
Re: Ellipse of Confidence in position findingRobin Stuart18 Mar, 16:17
Conditional Cocked HatRobin Stuart21 Mar, 12:55
Re: Obtuse versus acute cocked hatRobin Stuart21 Mar, 18:36
Re: Obtuse versus acute cocked hatRobin Stuart23 Mar, 14:37
Re: Obtuse versus acute cocked hatRobin Stuart24 Mar, 15:56
Re: Zenith FixesRobin Stuart26 Mar, 17:34
Re: Comet Donati above Paris 1858Robin Stuart21 Apr, 14:28
Re: Comet Donati above Paris 1858Robin Stuart21 Apr, 18:56
Re: Lunars by series, quadratic correctionRobin Stuart9 May, 13:36
Re: Lunars by series, quadratic correctionRobin Stuart11 May, 20:56
Re: Lunars by series, quadratic correctionRobin Stuart11 May, 21:03
Navigator's Course ProtractorsRobin Stuart3 Jun, 17:55
Nautical Miles and ApolloRobin Stuart7 Jun, 20:21
Re: Yogurt Sky: Navigational StarsRobin Stuart21 Jun, 14:10
Re: Yogurt Sky: Navigational StarsRobin Stuart21 Jun, 14:36
Re: Yogurt Sky: Navigational StarsRobin Stuart24 Jun, 13:08
Which Cocked Hat?Robin Stuart30 Jul, 13:31
Re: Which Cocked Hat?Robin Stuart1 Aug, 15:35
Re: Which Cocked Hat?Robin Stuart7 Aug, 13:31
Re: Visit beautiful Sandy Island...Robin Stuart27 Aug, 02:09
Finding UT from a lunar eclipseRoger W. Sinnott20 Jan, 21:48
Re: Flying to AntarcticaRoger W. Sinnott20 Jan, 22:23
Re: Historical tidesRoger W. Sinnott17 Feb, 15:29
Re: Short Term Proper MotionRoger W. Sinnott12 Mar, 12:59
Bessel's solution of lunar distancesRoger W. Sinnott17 Mar, 15:33
Re: Bessel's solution of lunar distancesRoger W. Sinnott19 Mar, 14:43
Re: Bessel's solution of lunar distancesRoger W. Sinnott20 Mar, 12:54
Re: Constructing the axes of the sum of squares ellipseRoger W. Sinnott10 Apr, 19:23
Re: How to round?Roger W. Sinnott12 Jun, 18:39
Re: Lost at Sea with a sextant puzzleRoger W. Sinnott24 Jun, 23:51
Re: Why no airtraffic over Antarctica?Rommel John Miller20 Jan, 00:19
Re: "hack" as a nounRommel John Miller18 Feb, 22:36
Re: Donald Crowhurst shooting the SunRommel John Miller26 Feb, 19:24
Re: First Point of Aries newbie questionRommel John Miller5 Mar, 20:14
Re: Navigating USS Nautilus in 1958Rommel John Miller4 Aug, 23:24
Re: Moon, Venus and Jupiter todayRon Jones2 Feb, 18:13
GMT from Moon and Body Observed Altitudes...??Ron Jones16 Feb, 23:46
Re: GMT from Moon and Body Observed Altitudes...??Ron Jones19 Feb, 18:57
Re: GMT from Moon and Body Observed Altitudes...??Ron Jones20 Feb, 17:57
Archiving your Celestial SightsRon Jones12 Sep, 18:51
Re: Lunar HaloRon Jones16 Sep, 16:18
Re: Kollsman periscopic sextant mountRussell Crum26 Mar, 05:19
Re: Geogebra?Sean C2 Jan, 12:07
Re: Replacement LED for Astra III B ArcSean C9 Jan, 00:57
Re: GPS Time and Network TimeSean C11 Jan, 06:25
Re: CN on the Moon: where are its' poles?Sean C17 Jan, 05:52
Re: Finding great circle apex?Sean C17 Jan, 21:53
Re: Finding great circle apex?Sean C19 Jan, 05:19
Glowing space billboards could show ads in the night skySean C24 Jan, 02:53
Re: Gyro sextantSean C25 Jan, 07:02
Re: In memoriam: Stan KleinSean C28 Jan, 06:06
Re: Gyro sextantSean C29 Jan, 06:06
Re: GMT from Moon and Body Observed Altitudes...??Sean C18 Feb, 07:32
Re: Donald Crowhurst shooting the SunSean C26 Feb, 12:46
Re: Lunars by series, quadratic correctionSean C8 May, 04:26
Re: Modern Celestial at Mystic Seaport, May 18-19Sean C12 May, 04:35
Re: Navigation Library for sale (K Gebhart)Sean C17 May, 01:09
Re: Is it possible to improve the presentation of this forum ?Sean C17 May, 05:39
Map by Cook's Tahitian Navigator Finally UnlockedSean C30 May, 02:21
Re: Japanese bubble sextant or else ?Sean C3 Jul, 04:23
Re: Mirror AH - safety firstSean C24 Jul, 04:50
Re: Bright meteor over northeast US last nightSean C27 Jul, 04:33
Re: Azimuth / elevation from sextant observationsSean C31 Jul, 04:22
Re: What3words: con game in the UKSean C22 Aug, 04:26
Lunar HaloSean C15 Sep, 08:28
Re: Lunar HaloSean C17 Sep, 05:35
Re: Historical tidesStephen N.G. Davies16 Feb, 22:46
Re: Troughton and Simms SextantStephen N.G. Davies9 Apr, 10:28
Re: In memoriam: Stan KleinSteve E. Bryant28 Jan, 03:33
Re: Time zone sign conventionsSteve E. Bryant11 Feb, 15:51
Time zone sign conventionsSteve E. Bryant13 Feb, 00:08
Corrections for latitude when taking sightsSteve E. Bryant11 Mar, 04:13
Re: Corrections for latitude when taking sightsSteve E. Bryant12 Mar, 20:22
Re: GPS Anti Spoof app updateSteve E. Bryant2 Apr, 03:00
Using the Anti Spoofing AppSteve E. Bryant11 Jun, 04:49
Re: Using the Anti Spoofing AppSteve E. Bryant11 Jun, 17:48
Lunars "data collection form"Steve E. Bryant20 Jun, 20:04
Quiz Question: Advanced the science of navigationStuart Middleton12 Mar, 12:08
What sextant to buy ?Terry Syrokosz6 Feb, 00:25
Re: What sextant to buy ?Terry Syrokosz6 Feb, 09:35
Re: What sextant to buy ?Terry Syrokosz20 Feb, 01:24
Re: Historical tidesTerry Syrokosz20 Feb, 03:25
Re: What sextant to buy ?Terry Syrokosz21 Feb, 23:09
Re: What sextant to buy ?Terry Syrokosz28 Feb, 23:44
Re: What sextant to buy ?Terry Syrokosz6 Mar, 22:18
Re: Latitude by PolarisThomas Spidle11 Feb, 01:10
Sextant use on tankerThomas Spidle13 Apr, 15:15
Re: Sextant use on tankerThomas Spidle15 Apr, 07:36
Re: CP-300/U USAF Star FinderThomas Spidle30 Jun, 19:54
Sun and moon at the North Pole.Tom Sult29 Jan, 15:39
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechTom Sult2 Jun, 03:34
Re: GPS Anti Spoof Pro, for iOSTom Sult9 Jun, 02:01
Re: Lost at Sea with a sextant puzzleTom Sult24 Jun, 22:53
Re: The art of large vessel navigationTom Sult22 Aug, 18:19
Re: Geogebra?Tony Oz3 Jan, 19:46
Re: ADMIN private messages plus a few other mattersTony Oz8 Jan, 09:40
Re: Longitude by Lunar OccultationTony Oz8 Jan, 18:04
Re: Radio Time signalsTony Oz9 Jan, 16:10
A DIY almanac and tables by Erik De ManTony Oz9 Jan, 16:28
Re: Moby Dick TalesTony Oz10 Jan, 19:52
Re: Moby Dick TalesTony Oz11 Jan, 10:18
Re: Life on the OceanTony Oz14 Jan, 21:50
CN on the Moon: where are its' poles?Tony Oz16 Jan, 11:01
Re: CN on the Moon: where are its' poles?Tony Oz16 Jan, 16:53
Re: CN on the Moon: where are its' poles?Tony Oz16 Jan, 17:35
Finding great circle apex?Tony Oz17 Jan, 10:54
Re: Oh No! Fundamental flaw in celestial navigation revealed!Tony Oz17 Jan, 17:54
Re: Finding great circle apex?Tony Oz18 Jan, 08:37
Re: Moby Dick TalesTony Oz19 Jan, 10:58
Why no airtraffic over Antarctica?Tony Oz19 Jan, 22:12
Re: Moby Dick TalesTony Oz19 Jan, 23:06
Re: Why no airtraffic over Antarctica?Tony Oz19 Jan, 23:28
The Moon is near zenith at 60 N these daysTony Oz21 Jan, 19:15
Re: The Moon is near zenith at 60 N these daysTony Oz21 Jan, 19:47
A DIY Faraday cage: caveats and hints?Tony Oz22 Jan, 11:06
Re: A DIY Faraday cage: caveats and hints?Tony Oz22 Jan, 14:51
Re: A DIY Faraday cage: caveats and hints?Tony Oz22 Jan, 15:49
Re: A DIY Faraday cage: caveats and hints?Tony Oz22 Jan, 16:30
Re: A DIY Faraday cage: caveats and hints?Tony Oz22 Jan, 20:43
Re: Gyro sextantTony Oz24 Jan, 14:49
Re: Gyro sextantTony Oz24 Jan, 18:01
Re: Gyro sextantTony Oz24 Jan, 19:20
Re: Gyro sextantTony Oz26 Jan, 08:51
Re: Gyro sextantTony Oz27 Jan, 18:51
Re: Northern Limits of Magnetic Compass UsefulnessTony Oz2 Feb, 21:53
Re: Gyro sextantTony Oz3 Feb, 09:10
Re: Pointless? Optimisation - Intercept PlottingTony Oz4 Feb, 09:47
Re: Pointless? Optimisation - Intercept PlottingTony Oz5 Feb, 12:33
Re: More on the North Magnetic Pole (NYT)Tony Oz5 Feb, 14:04
Re: More on the North Magnetic Pole (NYT)Tony Oz5 Feb, 21:00
Re: Northern Limits of Magnetic Compass UsefulnessTony Oz6 Feb, 09:17
Re: Northern Limits of Magnetic Compass UsefulnessTony Oz6 Feb, 20:10
Re: Northern Limits of Magnetic Compass UsefulnessTony Oz6 Feb, 20:34
Re: Gyro sextantTony Oz7 Feb, 08:55
Latitude by PolarisTony Oz9 Feb, 23:37
First trans-Atlantic Flights?Tony Oz14 Feb, 10:47
Re: Latitude at Noon and Midnight.Tony Oz15 Feb, 19:43
Re: Latitude at Noon and Midnight.Tony Oz17 Feb, 19:58
Re: GMT from Moon and Body Observed Altitudes...??Tony Oz20 Feb, 08:38
Re: Polaris - changes in SHA and DeclinationTony Oz22 Feb, 16:16
Re: Donald Crowhurst shooting the SunTony Oz26 Feb, 15:56
Re: Magnetic variation changing faster than anticipatedTony Oz27 Feb, 10:48
Re: Magnetic variation changing faster than anticipatedTony Oz27 Feb, 14:50
Re: Magnetic variation changing faster than anticipatedTony Oz28 Feb, 08:24
Re: What level of english skills is needed for safe navigation?Tony Oz1 Mar, 15:35
Re: Mercury in retrogradeTony Oz8 Mar, 09:50
Moon's crescent when viewed from low latitudesTony Oz12 Mar, 08:58
Re: Human magnetic senseTony Oz20 Mar, 08:50
Re: Zenith FixesTony Oz22 Mar, 22:19
Re: Zenith FixesTony Oz23 Mar, 17:33
Re: Mirror recoatingTony Oz26 Mar, 14:21
Re: Mirror recoatingTony Oz26 Mar, 19:50
Re: Article: Follow Canopus, Not Your CompassTony Oz26 Mar, 19:57
Re: Mirror recoatingTony Oz27 Mar, 07:25
Re: Mirror recoatingTony Oz27 Mar, 16:37
Re: Mirror recoatingTony Oz28 Mar, 12:03
Re: GPS Anti Spoof app updateTony Oz31 Mar, 20:20
Re: Yoda the NavigatorTony Oz16 Apr, 07:27
Is All-Haversine SR the be-all and end-all?Tony Oz17 Apr, 08:43
Re: Is All-Haversine SR the be-all and end-all?Tony Oz18 Apr, 08:37
Re: Early Air Navigation with RDFTony Oz18 Apr, 14:43
Polariser (photo) filter as a sextant shade - my experience.Tony Oz27 Apr, 09:05
Re: Polariser (photo) filter as a sextant shade - my experience.Tony Oz27 Apr, 20:42
Consistent "away" intercepts. Why?Tony Oz1 May, 20:17
Re: Consistent "away" intercepts. Why?Tony Oz2 May, 09:04
Single-body fix (at mer-pass): some questionsTony Oz7 May, 17:08
Re: Single-body fix (at mer-pass): some questionsTony Oz8 May, 20:26
Re: Single-body fix (at mer-pass): some questionsTony Oz8 May, 20:35
Congratulations on the Victory Day!Tony Oz8 May, 21:18
Re: Single-body fix (at mer-pass): some questionsTony Oz8 May, 23:45
Re: All Haversine FixTony Oz11 May, 14:48
Re: All Haversine FixTony Oz11 May, 21:40
Re: Fogging OpticsTony Oz13 May, 09:25
Re: Fogging OpticsTony Oz14 May, 11:41
UL vs LL: which is which when an artificial horizon is involved?Tony Oz14 May, 11:56
Re: UL vs LL: which is which when an artificial horizon is involved?Tony Oz15 May, 12:34
Re: HO-229 Abridgement by Jean VillemagneTony Oz15 May, 21:53
Re: UL vs LL: which is which when an artificial horizon is involved?Tony Oz16 May, 18:11
What do you do if horizon is not reliable?Tony Oz18 May, 08:51
Re: What do you do if horizon is not reliable?Tony Oz18 May, 21:05
Star-to-star distance for sextant calibration?Tony Oz20 May, 00:26
Re: What do you do if horizon is not reliable?Tony Oz20 May, 08:14
Re: Star-to-star distance for sextant calibration?Tony Oz20 May, 18:26
Re: Star-to-star distance for sextant calibration?Tony Oz20 May, 20:42
Re: Star-to-star distance for sextant calibration?Tony Oz20 May, 21:08
Re: Star-to-star distance for sextant calibration?Tony Oz21 May, 08:36
Re: Star-to-star distance for sextant calibration?Tony Oz21 May, 17:30
Re: Star-to-star distance for sextant calibration?Tony Oz22 May, 08:29
Re: Easy star-to-star distance correctionsTony Oz22 May, 08:34
Sight tube: cross-wires repair?Tony Oz23 May, 18:43
Re: Sight tube: cross-wires repair?Tony Oz24 May, 08:46
Re: Sight tube: cross-wires repair?Tony Oz25 May, 20:05
Calculator forensicsTony Oz29 May, 13:04
Re: Calculator forensicsTony Oz30 May, 14:16
Re: CP-300/U USAF Star FinderTony Oz31 May, 16:42
Re: Calculator forensicsTony Oz31 May, 20:26
Re: Calculators, cosines, and floating point computationTony Oz3 Jun, 09:43
Re: Calculators, cosines, and floating point computationTony Oz3 Jun, 15:08
Re: Calculators, cosines, and floating point computationTony Oz4 Jun, 10:55
A better calculator than a CASIO fx-260 Solar?Tony Oz4 Jun, 13:59
Re: Asymmetry in i.c.Tony Oz8 Jun, 09:34
Re: GPS Anti Spoof Pro, for iOSTony Oz9 Jun, 11:25
Re: Please recommend a good book or on-line courseTony Oz10 Jun, 10:13
NA: the combined effects of parallax and refraction?Tony Oz10 Jun, 12:44
Re: NA: the combined effects of parallax and refraction?Tony Oz11 Jun, 15:14
Re: NA: the combined effects of parallax and refraction?Tony Oz11 Jun, 15:20
Re: Asymmetry in i.c.Tony Oz11 Jun, 16:18
How to round?Tony Oz12 Jun, 17:53
Re: How to round?Tony Oz12 Jun, 19:04
Re: How to round?Tony Oz12 Jun, 22:56
Re: How to round?Tony Oz13 Jun, 08:06
Re: How to round?Tony Oz13 Jun, 22:10
Re: How to round?Tony Oz14 Jun, 08:22
Re: How to round?Tony Oz14 Jun, 08:38
Re: Lost at Sea with a sextant puzzleTony Oz24 Jun, 10:36
Re: CP-300/U USAF Star FinderTony Oz25 Jun, 10:44
Re: CP-300/U USAF Star FinderTony Oz26 Jun, 12:43
Re: CP-300/U USAF Star FinderTony Oz27 Jun, 08:14
Re: Indian Astronomical Ephemeris as a "Retro Almanac"Tony Oz27 Jun, 08:20
Constellations in "Moana"Tony Oz27 Jun, 09:45
Re: CP-300/U USAF Star FinderTony Oz28 Jun, 07:37
Re: Constellations in "Moana"Tony Oz28 Jun, 21:31
Re: CP-300/U USAF Star FinderTony Oz29 Jun, 23:29
Re: Constellations in "Moana"Tony Oz30 Jun, 10:09
Re: Sight reduction using a calculator's POL (arctan2) key - RevisitedTony Oz1 Jul, 09:36
What makes man a Navigator?Tony Oz1 Jul, 12:01
Re: What makes man a Navigator?Tony Oz2 Jul, 13:59
Re: What makes man a Navigator?Tony Oz3 Jul, 08:05
Re: GMT of lunar altitudes when possible?Tony Oz9 Jul, 07:29
Tamaya NC-88 on ebayTony Oz10 Jul, 12:44
What makes Sharp PC-1270 into a Celesticomp V?Tony Oz11 Jul, 11:28
Re: Lightning Strike CN ExerciseTony Oz11 Jul, 20:48
Re: Home made artificial horizonTony Oz17 Jul, 07:38
Distance off, by sextant angleTony Oz17 Jul, 13:00
Re: Distance off, by sextant angleTony Oz19 Jul, 07:39
Re: Apollo SextantTony Oz20 Jul, 16:12
A navigator's photo with really HUGE wrist-watch?Tony Oz22 Jul, 18:26
Re: A navigator's photo with really HUGE wrist-watch?Tony Oz23 Jul, 09:01
Re: Mirror AH - safety firstTony Oz24 Jul, 08:29
Accuracy: main shades vs eyepiece shades?Tony Oz25 Jul, 08:47
Re: Robert Ballard, Titanic discoverer, seeks Amelia Earhart's planeTony Oz25 Jul, 12:53
Re: Accuracy: main shades vs eyepiece shades?Tony Oz25 Jul, 15:25
Re: GPS Anti-Spoof feature requestTony Oz30 Jul, 16:17
Re: Apollo SextantTony Oz31 Jul, 07:40
Re: A novel material for mirror AH ?Tony Oz16 Aug, 09:30
Re: Is this a "digital sextant"?Tony Oz16 Aug, 19:29
Magnetic susceptibility of (mechanical) quartz watchesTony Oz19 Aug, 08:18
Optimal HoE?Tony Oz19 Aug, 17:16
Re: Optimal HoE?Tony Oz20 Aug, 07:47
Re: What3words: con game in the UKTony Oz22 Aug, 07:52
Re: What3words: con game in the UKTony Oz22 Aug, 14:11
Literature corner: R.Trumbull's "The Raft"Tony Oz25 Aug, 20:33
Re: GPS Spoofing and TimeTony Oz26 Aug, 20:44
Re: GPS Spoofing and TimeTony Oz27 Aug, 18:51
Re: GPS Spoofing and TimeTony Oz28 Aug, 07:30
Re: The Improved Suns Table4 from HO249Tony Oz29 Aug, 10:41
Re: The Improved Suns Table4 from HO249Tony Oz30 Aug, 08:16
Re: Harold Gatty's KamalTony Oz30 Aug, 08:35
Re: The Improved Suns Table4 from HO249Tony Oz30 Aug, 23:08
Re: The Improved Suns Table4 from HO249Tony Oz3 Sep, 09:27
Re: The Improved Suns Table4 from HO249Tony Oz3 Sep, 21:51
Re: Multiplication by addition of logsTony Oz4 Sep, 08:55
Re: Multiplication by addition of logsTony Oz4 Sep, 14:17
Re: Multiplication by addition of logsTony Oz5 Sep, 17:44
Re: Zero-Altitude ShotTony Oz8 Sep, 20:54
Cpu-50A/PTracy Shrier27 Mar, 01:43
Re: Cpu-50A/PTracy Shrier27 Mar, 18:50
Re: Shoot a lunar tomorrowTracy Shrier10 Sep, 04:06
Bill Murdoch's TI-82 site reduction programWayne Miller12 Mar, 16:30
Iterative Lunar methodWendel Brunner19 Feb, 16:06
Re: GMT from Moon and Body Observed Altitudes...??Wendel Brunner20 Feb, 17:27
Re: Iterative Lunar methodWendel Brunner26 Feb, 02:57
Re: Iterative Lunar methodWendel Brunner26 Feb, 03:32
Re: Freiberger Sirius Sextant ReveiwWilliam Edward Henry28 Jul, 00:02
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechZane Grey1 Jun, 12:59
Re: Air Force Lab Plans R&D into Celestial-Aided Navigation TechZane Grey2 Jun, 07:28
Re: Stellarium Program as practice toolZane Grey7 Jun, 20:16
Re: Stellarium Program as practice toolZane Grey8 Jun, 07:09
Re: GPS Anti Spoof Pro, for iOSZane Grey11 Jun, 05:44
Re: Stellarium Program as practice toolZane Grey11 Jun, 06:04
Re: Greenwich 19th and 20th c conventionsZane Grey11 Jun, 06:41
Re: Lost at Sea with a sextant puzzleZane Grey24 Jun, 22:17
Re: Lost at Sea with a sextant puzzleZane Grey26 Jun, 00:00
Re: We need a backup to GPSZane Grey16 Jul, 15:55
Re: Galileo Sat-Nav System Still Without ServiceZane Grey16 Jul, 18:34
Re: SAR-search-patterns ApplicationZane Grey16 Jul, 18:42
Apollo SextantZane Grey16 Jul, 18:45
Re: SAR-search-patterns ApplicationZane Grey17 Jul, 02:34
Re: SAR-search-patterns ApplicationZane Grey17 Jul, 02:40
Re: Which Cocked Hat?Zane Grey1 Aug, 19:33
Re: A novel material for mirror AH ?Zane Grey14 Aug, 18:48
Any reading suggestions?Örjan Sandström1 Feb, 10:26
Re: Any reading suggestions?Örjan Sandström4 Feb, 09:33
Re: Any reading suggestions?Örjan Sandström5 Feb, 08:57
Re: What sextant to buy ?Örjan Sandström7 Feb, 06:09
Re: Donald Crowhurst shooting the SunÖrjan Sandström26 Feb, 09:24
Re: What level of english skills is needed for safe navigation?Örjan Sandström1 Mar, 10:20
Re: Corrections for latitude when taking sightsÖrjan Sandström15 Mar, 09:03
Re: Today’s the Spring EquinoxÖrjan Sandström21 Mar, 17:16
Re: Mirror recoatingÖrjan Sandström27 Mar, 22:09
Re: Mirror recoatingÖrjan Sandström27 Mar, 22:09
Re: Troughton and Simms SextantÖrjan Sandström8 Apr, 09:41
Reeds versine formulasÖrjan Sandström15 Apr, 13:52
Re: Reeds versine formulasÖrjan Sandström16 Apr, 18:08
Re: Lunars by series, quadratic correctionÖrjan Sandström11 May, 10:00
Re: Sight tube: cross-wires repair?Örjan Sandström23 May, 21:22
Re: Sight tube: cross-wires repair?Örjan Sandström25 May, 08:42

Index includes 1972 messages.

NavList

What is NavList?

Join NavList

Name:
(please, no nicknames or handles)
Email:
Do you want to receive all group messages by email?
Yes No

You can also join by posting. Your first on-topic post automatically makes you a member.

Posting Code

Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
Email:

Email Settings

Posting Code:

Custom Index

Subject:
Author:
Start date: (yyyymm dd)
End date: (yyyymm dd)

Visit this site
Visit this site
Visit this site
Visit this site
Visit this site
Visit this site