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    Re: Santa Barbara 2016: Venus sight
    From: Stan K
    Date: 2016 Dec 13, 21:40 -0500
    Peter,

    That explains what went on in your spreadsheet, but I'd still like to know why the USNO Celestial Navigation Data site seems to always add semi-diameter.  Can anyone out there explain this?

    BTW, according to my records I downloaded Astron 12/24/15.  I suspect if I look through the Navlist archives I'll find that you announced it around that time.

    Stan


    -----Original Message-----
    From: Peter Hakel <NoReply_PeterHakel@fer3.com>
    To: slk1000 <slk1000@aol.com>
    Sent: Tue, Dec 13, 2016 8:40 pm
    Subject: [NavList] Re: Santa Barbara 2016: Venus sight

    Stan,

    Good catch - that was an oversight on my part. The limb selection in cell I31 allows three options (Upper/Lower/Center), and I forgot to change it from the default - the result changes by ~ 0.1’. For the 4-LOP fix I used my original spreadsheets for everything, and there the SD correction for Venus was indeed 0 (see attached), since I observed it the way you said.

    For details about the integrated spreadsheet, see this blog post:
    https://navigationspreadsheets.wordpress.com/2015/12/24/new-releases-and-updates/


    Peter Hakel


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