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    Nautical Almanac sight reduction by calculation
    From: Jim Rives
    Date: 2016 Feb 14, 10:27 -0800

    This has probably been discussed often here, and if so, if someone could point me to a relevant thread I'll be happy to go look it up.  

    I am trying to recalculate the sight reduction example on page 282-3 of the2016  Nautical Almanac by calculation.  I've dropped the data needed to calculate A,B,C,D, and E into an excel spreadsheet and don't get the results they show on page 283. Perhaps I'm not understanding the math.  Is there an article somewhere which shows how this method works in more detail.  Perhaps showing the derivation of the variables above?  

    Thanks, 

    Jim Rives

       
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