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    Re: SD topocentric formula
    From: Eric Fernandez
    Date: 2020 Sep 12, 05:50 -0700

    David

    Many thanks for your insight and for taking the time to deconstruct this formula! As I wrote to Frank, indeed I am aware this level of precision is on a practical point of view probably overkill. That said I was trying to understand the theory behind it, and for the augmentation it uses perfect spheres. Then other corrections can be added to take oblateness into consideration.

    I have found other formulas which seemed approximations and empirical ones, so not very informative. Your analysis is very helpful, many thanks!

    Eric

       
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