NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Ducruy Jacques
Date: 2013 Jun 1, 13:57 -0700
Hello,
It seems to me that there are TWO Lyons methods for clearing the distance.
First method : calculation of two corrections (as Whitchell) for sun (or star) and moon ;
Second method : calculation of one correction for moon parallax, and correction of refraction for linear tables, but the formula for parallax is différent of formulas of first method.
Have you the mathematical demonstration of the two method ?
Thank you very much in adavance.
Good evening
Jacques
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