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    Re: Photo sextant sights
    From: George Huxtable
    Date: 2008 Aug 1, 00:05 +0100

    Thanks to Paul Hirose for correcting a webpage reference that I had copied,
    and stating the correct webpage showing that attempted photo-lunar, at-
    
    http://www.starpath.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=31;t=000017
    
    Paul's conclusions and mine seem to agree well.
    
    This may perhaps suggest a possible enhancement to Frank Reed's lunar
    distance website. Instead of just multiplying the discrepancy in lunar
    distance by a constant factor of 30, to obtain longitude error, I wonder if
    it would be possible (and relatively easy) to actually compute that error,
    allowing for such geometric misalignments (and perhaps also, differences in
    the angular speed of the Moon). That would then at least draw the attention
    of a user to the fact that he was measuring a lunar distance in a silly
    direction; such a warning would have been useful here.
    
    George.
    
    contact George Huxtable at george@huxtable.u-net.com
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    
    
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