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    Re: Old style lunar
    From: Ken Muldrew
    Date: 2004 Dec 15, 23:34 -0700

    > It seems that the sad fate of the Lewis and Clark
    > Lunars did not teach the people who developed
    > "procedures", that it is better to take altitudes
    > simultaneously with the Lunars, rather than compute them.
    
    Hmmm...The Thompson lunar is 4 years *before* Lewis & Clark set off on
    their voyage, he accurately mapped about one quarter of the continent
    without ever taking altitudes simultaneously with the lunars, and the main
    lesson from L&C (as far as altitudes go) only concerns those who would like
    to figure out where they made mistakes while pondering their data 200 years
    later.
    
    The source of error in the particular set of lunars by Thompson does not lie
    in the altitude calculations (although I previously speculated that they might
    help shed light on just where the error lay).
    
    Ken Muldrew.
    
    
    

       
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