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    Re: The Bygrave
    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.


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