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    Re: Moonlight and Visible Horizon
    From: Gary LaPook
    Date: 2021 Jun 30, 15:43 -0700
    "In addition to the normal shots, I also took a series of shots in the 
    middle of the night with the horizon illuminated by moonlight. On 
    November 3, 2009 at 18° 39' north, 40° 36' west between 0024 Z and 0039 
    Z I shot Fomalhaut, Deneb and Vega three times each. The intercepts were 
    0.3T; 0.3A; 1.3T; 1.5A; 1.5T; 1.6A; 2.5A; 2.6T; and 3.8A making the σ 
    2.08 for these 9 shots taken in the middle of the night! Have others 
    tried this?"

    See:

    http://fer3.com/arc/m2.aspx/Accuracy-sextant-observations-sea-LaPook-sep-2010-g14008

       
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