NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Brad Morris
Date: 2013 May 2, 09:52 -0400
van Asten
you are SPECULATING without evidence.
True that sunset-sunrise fixes give arbitrary results , but at sunset mr.Noonan was not to prepare for finding a small island . At sunrise he was , but that does not exclude that for the two phenomena , he beforehand computed the time-position groups in case he could comfortably make use of it . From 10,000 ft altitude he could namely observe sun´s centre in the celestial horizon , sun´s image above the horizon by refraction , with the bubble sextant at sunset . There are in the mean time 3 textbooks describing the fashion : Dutton , Cugle-1938 and NIF - 1944. .
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