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    Re: Zenith Fixes
    From: Andrés Ruiz
    Date: 2019 Mar 22, 11:01 +0100
    Dave,
    Away 1 nm???
    I do not look in detail your plots, but it seems to me that scale for latitude is not taken into account. Am I wrong?
    dx = dy * COS(latitude)

    When I plot by hand LoPs, usually I use an Universal Plotting Sheet, or I construct one easily.
    You probably know this:
    Instructions: http://www.starpath.com/cgi-bin/ubb/ultimatebb.cgi?ubb=print_topic;f=16;t=000062

    fair winds!
    --
    Andrés Ruiz
    Navigational Algorithms
    http://sites.google.com/site/navigationalalgorithms/
       
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