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    Re: Haversines with Logarithms
    From: Matthew Gianelloni
    Date: 2020 Oct 12, 04:44 -0700

    Reposting the corrected Meridian Angle algorithm. The one in my previous post (Worksheet) only worked with same hemisphere (Lat and Dec) sights. Had to redo the math to find the error. 


    Meridian Angle Algorithm

    Same           Contrary

    A: Dec           A: Dec

    B: Lat           B: Lat

    C: H.O.           C: H.O.

    D: 90-A           D: 90+A

    E: 90-B           E: 90-B

    F: 90-C           F: 90-C

    G: D+E           G: D-E

    H: D-E           H: D+E

    I: Hav F           I: Hav F

    J: Hav G           J: Hav G

    K: Hav H.          K: Hav H

    L: I-K           L: I-J

    M: J-K           M: K-J

    N: Log L           N: Log L

    O: Log M   O: Log M

    P: N-O           P: N-O

    Q: Angle of P   Q: Angle of P

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