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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sight reduction methods
From: John D. Howard
Date: 2015 Nov 5, 07:21 -0800
From: John D. Howard
Date: 2015 Nov 5, 07:21 -0800
Andres,
Nice graph of sight reduction methods.
I do have a question. You put Lunar method under Longitude. I thought a lunar was used only to get a crude GMT ( GAT ) and that that time hack could be used as if from a clock. Historicaly the lunar method was used before the Sumner line so was used with a time sight to get longitude but can the lunar time hack be used like any other time hack with the St. Hilaire and HO 249?
Thanks. John H.
