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    Lunar Distance
    From: Gordon Talge
    Date: 2002 Jan 26, 1:02 AM

    To Answer some questions about Lunar Distance.
    There are no modern navigation texts that teach "Lunar Distance"
    as other than an historical method.
    The last time "Lunar distance" tables were in the Nautical Almanac
    was something like 1914 or 1917. I have a 1917 edition of Bowditch
    and the articles on lunar distance had already been dropped.
    The best way to find out how the method was really used is to
    get a hold of something like an 1840 copy of Norie's Navigation
    text book.
    BTW, the treatment of trigonometry in the navigation texts such
    as Norie and others back before 1880 is quite different than that
    presented in texts today. They made the change around the 1890s
    to how it is taught now.
    The results are of course are the same, but the way of looking at
    and setting up a trig problem, and the way the trig functions
    were defined, was quite a bit different and really takes some
    getting use to.
    -- Gordon
                                 (. .)
    | Gordon Talge WB6YKK                 e-mail: gtalge{at}pe.net |
    | Department of Mathematics           Long Beach, CA        |
    | Wilson High School                                        |
    | (o-    Debian / GNU / Linux                               |
    | //\    The Choice of the GNU Generation                   |
    | v_/_                  .oooO                               |
    |    - E Aho Laula -     (  )   Oooo. - Wider is Better -   |
    +-------------------------\ (---(  )------------------------+
                               \_)  ) /

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