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    Re: N.A. Altitude Correction Table
    From: Dan Hogan
    Date: 2001 Apr 27, 2:33 PM

    On 27 Apr 2001, at 17:41, Herbert Prinz wrote:
    
    > Dear All,
    >
    > I just realize that I don't understand the Altitude Correction Table 10�
    > to 90� for the Sun on page A2 in the Nautical Almanac.
    Well I'm no mathematician, but A2 is just a critical table you pluck a number
    from.
    > Does anybody know whether the exact formula (algorithm) that generates
    > this table has been published? I can't seem to reproduce it with the
    > calculator formulas given in the Almanac itself. Nor is it consistent
    > with the results I get when I correct the sun observation for refraction
    > by means of the star table and then apply horizontal parallax and
    > average SD according to season... What am I missing?
    
    Don't know where the exact formula would be, but the book that mos navigation
    programmers refer to is "Astronomical Algorithms by Jean Meeus ISBN 0-943396-
    35-2",printed in the US by William-Bell, Inc.
    
    > Best regards
    >
    > Herbert Prinz (from 1368950/-4603950/4182550 ECEF)
    >
    > P.S.
    >
    > Speaking of the sun: Has anybody on the list observed it in the last few
    > days? Quite remarkable.
    Clouds
    
    Cheers
    -Dan-
    

       
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