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    Star to star distance reduction
    From: Lars Bergman
    Date: 2025 Dec 14, 06:17 -0800

    John Letcher, in his "Self-Contained Celestial Navigation with H.O.208", from 1977, gives a very simple method for clearing a distance between two stars. From time to time I have thought about how he came up with that solution. After some struggle, I've managed to derive his formula. Perhaps the derivation might be of interest to some NavList readers.

    Lars

    File:
    Letcher-p84.pdf
    File:
    Letcher-p85.pdf
    File:
    Letcher-star-star-distance-reduction.pdf
       
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