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    Yosemite Falls moonbow
    From: Peter Hakel
    Date: 2011 Apr 11, 18:06 -0700
    http://eloquentnature.wordpress.com/2011/04/10/yosemite-falls-moonbow/

    I think that this image by Gary Hart could be of some interest to "CelNav by camera" enthusiasts.  What kind of information can be extracted from it?  Field distortions from the known vs. imaged distances between the stars of the Big Dipper?  The location of true horizon in the picture from the (extrapolated) position of Polaris and known latitude of Yosemite?  Using all this plus the moonbow to estimate Moon altitude and its LHA? (To me it looks like not long before LAM.)


    Peter Hakel

       
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