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    Re: Longhand Sight Reduction
    From: Hanno Ix
    Date: 2014 Jun 10, 19:37 -0700
    Greg,

    GREAT  - this is so much along my lines.
    However, if it is correct my face will turn green of envy  ; )

    Your example sure is correct. I will have to check the trig of the formula
    or did you or Frank already?

    Beware though: As Frank said, the cos() will be negative when
    L- d or L+d is outside +/- 90 deg.

    Now my plug of old:
    The only thing left is turning all deg to arcmin in our tables and forgetting the awkward sexagesimal calculations. Everything will be integers, decimal and of 4 digits only, plus the tables will be more compact.

    I promise, things will become easier yet.

    Great stuff

    Hanno


    _______________________________

    PS: worked today on Bygrave's internal math. There is a pleasant
    surprise. But after Daniol who needs a Bygrave still? :)


    On Tue, Jun 10, 2014 at 10:21 AM, Greg Rudzinski <NoReply_Rudzinski@navlist.net> wrote:

    There may be a few rules that apply to L+d > 90° and L-d as a negative value.

     

    https://navlist.net/m2.aspx/Longhand-Sight-Reduction-Rudzinski-jun-2014-g27982


       
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