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    Re: Constructing A Logarithm Table
    From: Frank Reed
    Date: 2009 Jan 11, 19:27 -0800

    Hewitt, you wrote:
    "(In high school we use to call them 'slime' and 'co-slime')."
    LOL. I had the happy advantage of learning celestial navigation, and some of 
    the associated trig, a year before studying the subject in school, so the 
    "slimeys" were old friends to me.
    "Anyway, I've never had occasion to grapple with a spread-sheet."
    Oh, what a shame! They're great fun for this sort of thing. I write quite a 
    lot of stand-alone software, but when I want to work out celestial navigation 
    calculations, I almost always start with a spreadsheet. If you need a table 
    of haversines for every tenth of a degree, you can assemble one in about... 
    hmmm... I'll time myself... OK. Done. It took me five minutes and that 
    included some time making a nice graph (I got distracted). Do you know if you 
    have a spreadsheet program pre-installed on your computer? Are you on 
    Windows? Mac? 
    And you wrote:
    "Come to think of it, there's a nice little book that has the S/CoS
    formulas for direct solution of the undivided triangle for Hc and Z -
    backup is the NAO reduction table with a more lucid explanation.  Also
    has a long-term almanac of Aries and Sun; pub. by Starpath School of
    Yes, there are quite a few nice books out there that spell it all out. Some 
    even have *your* name on the cover. :-)
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