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    Re: sextant without paper charts
    From: Bill B
    Date: 2008 Oct 31, 01:15 -0400

    > Lu Abel wrote:
    
    >> Bill:
     >> I suspect we are actually closer in viewpoints than you may think.
    
    I am sure we are, based on list history. Hence my comment after the fun
    factor and electronics failure, "But you know all of that ;-)" I apologize
    if I was a bit tongue-in-cheek about what I felt was closer to sardonic wit
    or the Socratic method on your part--playing devil's advocate if you will.
    
    As spherical trig was not available in high school for me (Indiana, rural
    school in the early to mid 1960's) and I switched majors from engineering to
    psychology in college--interest in consumer research--before I ran into
    spherical trig at Purdue University; and I had forgotten almost all the trig
    I knew, the formulas were intimidating.
    
    Spherical trig outside of cel nav still is still intimidating for me.
    Looking at the Bowditch version, I started playing around and soon found
    that once I got into obtuse angles it became the usually "If it is a Monday
    in Montana, add 180 degrees."   You may recall my "aborted" post on the
    subject.
    
    229 was great in the beginning, as I could leaf through the pages and see
    the relationships between LHA, declination, and to a lesser degree latitude
    vs. HC. Like tides when living 100-200 yards (meters) off the Long Island
    Sound (Connecticut, USA), or knowing clock time +/- 15 minutes near home by
    the sun, I developed a gut feel.  That helps when "speed dialing" reductions
    on my TI-30Xa.  If I mis-key, I feel it in my gut when it is more than a bit
    off.
    
    Bill B.
    
    
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