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    Re: Old style lunar
    From: Ken Muldrew
    Date: 2004 Dec 16, 10:01 -0700

    On 16 Dec 2004 at 9:38, Alexandre Eremenko wrote:
    
    > But if Thompson's time is his local
    > apparent time (that is the time elapsed from
    > his local Sun culmination),
    > then his star altitude is close to the
    > correct value, and we still have no explanation
    > why his Lunar was so much off.
    
    I think the key problem is that the data he extracts from the almanac for
    the moon's RA and declination show an interval of only 3 minutes between
    the two lunar distance shots while his watch shows an interval of 9
    minutes. Since his DR has to be the same for both, he must have made a
    mistake in determining Greenwich apparent time for one of the shots,
    losing 6 minutes somehow.
    
    Ken Muldrew.
    
    
    

       
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