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    Re: Instumental error?
    From: Frank Reed CT
    Date: 2005 Apr 22, 01:45 EDT
    Alex et al.:
     
    This week would be a good time for Noon Sun artificial horizon sights as a test for arc error. The total angle at about 120 degrees in mid-northern latitudes will be a good test of the high end of the sextant arc.
     
    -FER
    42.0N 87.7W, or 41.4N 72.1W.
    www.HistoricalAtlas.com/lunars
       
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