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    Re: Revisiting A thought question
    From: Bill B
    Date: 2007 Jan 02, 20:53 -0500

    George wrote
    > Bill's second-thoughts (and I wonder if the shower helps to produce
    > them) point to a better answer to Guy's question than his
    > first-thoughts did.
    LOL.  Often topics I have been toying with come to me in a dream, and
    suggest things I overlooked.  During part of my mourning routine I have
    access to books etc, but the shower wakes me up and leaves room for thoughts
    You are literally quite correct in targeting dip, as Guy did mention height
    of eye.  A very learned and interesting answer.
    However Guy did not give us a height of eye figure, but did give us
    elevation above sea level.  I seriously doubt Guy intended to or could use
    the natural sea horizon from the lake.  I therefore made a logical leap that
    dip was not his primary concern.
    To follow up on refraction correction for Guy, page 280 of my almanac gives
    a formula for calculating not only dip, but refraction at 1010 millibars and
    10 Celsius, as well as a correction to standard refraction for temperature
    and pressure if known.  Adjusting broadcast pressure with the formula Frank
    provided then plugging and chugging should get you pretty close to a
    refraction value to use at 6225 ft with a natural horizon.
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