A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Alexandre Eremenko
Date: 2017 Apr 10, 19:26 +0000
Rafal, You ask: > Can I use all possible pairs of On and Off measurements to estimate IC? > As in both cases IC calculation gave statistically the same value should I try to remove it or leave it as is (Toward and Away analysis is next step)? Of course you can use all possible pairs, but this will not alter your result for the IC under normal circumstances. So there is no point of doing this. You will never get any difference greater than your sextant accuracy. Unless some of your measurements are real blunders which is usually visible without any calculation, and such result should be simply discarded. Remember that when Cel Nav was actually used, no computers and no calculators were available, so people tried to minimize the number of calculations. Alex.