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

Recent Messages, dates UT (825 new since last visit):
Re: More Lunars, now from ArgentinaAntoine Couëtte17 Jun, 15:46
Re: MonViso, Lady Moon again with a Basilica Nav PuzzleAntoine Couëtte17 Jun, 08:00
Re: More Lunars, now from ArgentinaMartin Caminos16 Jun, 23:28
Re: More Lunars, now from ArgentinaFrank Reed16 Jun, 14:17
More Lunars, now from ArgentinaMartin Caminos15 Jun, 22:25
Re: Lunars at Cusco, PeruMartin Caminos15 Jun, 21:54
Re: Lunars at Cusco, PeruAntoine Couëtte15 Jun, 20:39
Re: Polhemus available on ebayJoe Plazak15 Jun, 20:37
Polhemus available on ebayGary LaPook15 Jun, 16:57
Bygrave sliderule available on ebay!Gary LaPook15 Jun, 16:51
Re: MonViso, Lady Moon again with a Basilica Nav PuzzleAntoine Couëtte14 Jun, 18:47
Re: Lunars at Cusco, PeruPaul Hirose14 Jun, 17:49
Re: Agnostic gnomon and horary errorAdrian F14 Jun, 13:16
Re: Agnostic gnomon and horary errorGeoff Hitchcox14 Jun, 04:32
Re: Polar celestial air navigation in 1958David Pike13 Jun, 21:13
Re: Lunars at Cusco, PeruMartin Caminos13 Jun, 17:55
Re: Lunars at Cusco, PeruAntoine Couëtte13 Jun, 07:10
Re: Agnostic gnomon and horary errorGeoff Hitchcox13 Jun, 00:47
Polar celestial air navigation in 1958Paul Hirose12 Jun, 22:26
Re: Lunars at Cusco, PeruPaul Hirose12 Jun, 21:38
Re: Lunars at Cusco, PeruMartin Caminos12 Jun, 03:08
Re: Lunars at Cusco, PeruPaul Hirose11 Jun, 19:30
Re: Agnostic gnomon and horary errorAdrian F11 Jun, 15:55
Re: Lunars at Cusco, PeruMartin Caminos11 Jun, 04:17
Re: Agnostic gnomon and horary errorGeoff Hitchcox11 Jun, 00:23
Re: Agnostic gnomon and horary errorChuck Varney10 Jun, 17:59
Re: Agnostic gnomon and horary errorGeoff Hitchcox10 Jun, 12:45
Re: Lunars at Cusco, PeruFrank Reed10 Jun, 06:44
Lunars at Cusco, PeruMartin Caminos10 Jun, 02:58
Re: Agnostic gnomon and horary errorFrank Reed8 Jun, 13:08
Re: Any practical Method to obtain WGS84 Altitudes?Antoine Couëtte7 Jun, 17:18
Re: Any practical Method to obtain WGS84 Altitudes?Geoff Hitchcox7 Jun, 10:00
Re: Any practical Method to obtain WGS84 Altitudes?Antoine Couëtte7 Jun, 02:16
A simple (?) puzzle from another amazing pictureAntoine Couëtte6 Jun, 14:05
Re: Any reliable computation of terrestrial refraction?Antoine Couëtte6 Jun, 12:42
Re: Any practical Method to obtain WGS84 Altitudes?Antoine Couëtte6 Jun, 12:41
Re: Agnostic gnomon and horary errorChuck Varney5 Jun, 18:43
Re: Agnostic gnomon and horary errorFrank Reed5 Jun, 05:47
Re: Altitude & azimuth from Bygrave formulasGary LaPook5 Jun, 03:23
Re: Agnostic gnomon and horary errorFrank Reed4 Jun, 13:28
Re: Agnostic gnomon and horary errorChuck Varney3 Jun, 23:53
Re: Agnostic gnomon and horary errorRobin Stuart3 Jun, 16:42
Re: Agnostic gnomon and horary errorRobin Stuart3 Jun, 14:13
Re: Instructions for Flat BygraveGary LaPook3 Jun, 06:47
Re: Agnostic gnomon and horary errorChuck Varney2 Jun, 20:10
Re: Agnostic gnomon and horary errorGeoff Hitchcox2 Jun, 13:49
Re: Altitude & azimuth from Bygrave formulasPaul Hirose1 Jun, 19:55
Re: Agnostic gnomon and horary errorChuck Varney1 Jun, 15:37
Re: Haversine scales on slide rulesBrian Walton1 Jun, 02:08
Re: Agnostic gnomon and horary errorGeoff Hitchcox1 Jun, 01:15
Re: Haversine scales on slide rulesPaul Dolkas31 May, 19:22
Haversine scales on slide rulesBill Ritchie31 May, 13:43
Re: Navigation slide rulePascal Jouin31 May, 13:14
Agnostic gnomon and horary errorFrank Reed30 May, 18:24
Lunars workshop this weekendFrank Reed30 May, 16:51
Re: The Plane Scale and Stereographic Projection in Early NavigationRobert H. van Gent30 May, 16:39
Re: The Plane Scale and Stereographic Projection in Early NavigationRobin Stuart30 May, 13:42
Re: The Plane Scale and Stereographic Projection in Early NavigationRobin Stuart30 May, 13:38
Re: The Plane Scale and Stereographic Projection in Early NavigationBrian Walton30 May, 08:59
Re: The Plane Scale and Stereographic Projection in Early NavigationRobert H. van Gent29 May, 20:31
Re: The Plane Scale and Stereographic Projection in Early NavigationRobin Stuart29 May, 16:56
Re: The Plane Scale and Stereographic Projection in Early NavigationRobert H. van Gent29 May, 15:55
The Plane Scale and Stereographic Projection in Early NavigationRobin Stuart29 May, 13:03
Re: GPS Anti Spoof app updateMurray Buckman28 May, 20:46
Marques... Lost four decades ago...Frank Reed28 May, 20:28
GPS Anti Spoof app updateFrank Reed28 May, 19:33
Re: Mk IX First ResultsDavid Pike28 May, 15:05
Re: Mk IX First ResultsLawrie Elms27 May, 11:47
Re: Sextant with 3D printerChuck Varney26 May, 15:54
Re: Sextant with 3D printerPaul Dolkas26 May, 08:03
Re: Sextant with 3D printerFrank Reed26 May, 04:19
Re: Mk IX First ResultsMichael Josefsson24 May, 17:44
Re: Mk IX First ResultsArt Leung24 May, 12:41
Re: Mk IX First ResultsMichael Josefsson24 May, 07:57
Re: Sextant with 3D printerJan Eckert23 May, 14:18
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