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    Re: Polaris plus one For Huub Robroek
    From: Herman Dekker
    Date: 2023 Jul 5, 12:45 -0700

    Hello Huub,

    By coincidence I read your PDF about the problem and discovered something strange.
    For Polaris and Venus you used the same Refraction correction, but the Hs differs?
    Then the formula you had used for the Refraction made then error clear.
    The formula you used is Refr=0,97'/Tan (LAT)
    But it must be Refr=0,97'/Tan( Hs). Then you get different values for Polaris and Venus.
    In this specific problem no great difference, but wrong appoach.

    Just to inform you to use the the correct formula in the future.

    Greetings from Holland
    HermanD

       
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