NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: CelNav without sextant
From: Alexandre Eremenko
Date: 2004 Nov 2, 14:15 -0500
From: Alexandre Eremenko
Date: 2004 Nov 2, 14:15 -0500
Timing meridian passage is very imprecise. (How do you intend to detect this moment? With your compass?) Even WITH a sextant it is hard to time a meridian passage with reasonable precision. One can probably improvise something crude to measure altitudes, that it to replace sextant, but I suppose this will be also VERY imprecise. My question was related to reasonably precise methods (of roughly the same order in precision as the usual methods involving a sextant). So far I see only those two mentioned in my previous message. (timing occultations and rise/set). Alex. On Tue, 2 Nov 2004, Mike Boersma wrote: > Given GMT and an almanac, you can still do a noon sight for latitude and > longitude (use the equation of time on the daily page to establish