NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: The Bygrave
From: Hanno Ix
Date: 2009 Jul 24, 08:36 -0700
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From: Hanno Ix
Date: 2009 Jul 24, 08:36 -0700
May I please ask some questions? 1. I am not a sailor. So, what are the useful ranges of a Bygrave? In other terms, what are the critical trigonometrical/nautical Regardssituations where the knowledge of angles >89deg or angles <1deg is important? 2. Are there practical approximations by polynomials etc. for such extreme cases? 3. More generally: Are we aiming at historical replicas of the Bygrave, MHR, etc. or are we seeking at a modern implemetation of the idea? Or both? 4: Similarly: Are we interested in the Bygrave just because it is so interesting - which it is! - or are we looking for the very simplest means to do accurate sight reduction? For the latter, there might be attractive alternatives. Regards |
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