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    Re: Obtuse versus acute cocked hat
    From: Bill Lionheart
    Date: 2019 Mar 21, 21:14 +0000

    Dear Robin
    
    That is an interesting question too Robin, what statisticians call
    "optimal design of experiments", but it was not what I had in mind. I
    was thinking of the empirical distribution of azimuths in fixes
    actually used, say if you look back through a set of plotting sheets
    for a typical voyage,  or a model for that based on a preference for a
    bias towards an equilateral triangle mitigated by the distribution of
    usable bodies at twilight. There are plenty of navigational stars if
    you have  a clear night and can identify them, but one might choose
    the moon and a planet if those are at a suitable azimuth and altitude.
    There will also be plenty of running fixes using sun sights too. I
    should have done this systematically from "Hawaii by Sextant", but at
    a cursory glance I see quite a few obtuse triangles there.
    
    Bill
    
    On Thu, 21 Mar 2019 at 20:18, Robin Stuart  wrote:
    >
    > Bill,
    >
    >     If I understand you correctly you are seeking a figure of merit to 
    decide which set of 3 available bodies is best to use for a fix. This came up 
    recently and I refer you to my suggestion made here,
    >
    > Regards,
    >
    > Robin
    >
    > View and reply to this message
    

       
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