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    Re: Cross Staff in use, 1574 image
    From: Brad Morris
    Date: 2009 Oct 18, 15:38 -0700

    Hi George
    
    Interesting reading.  A question about the part where the observer is advised 
    to "Search firstly from the astronomical tables the true motion of the Moon". 
     From what astronomical table would that be?
    
    Sure, tables accurate enough to use were two centuries away, but these 
    directions are concise enough to firmly imply the existence of a contemporary 
    table to Cosmographia.
    
    Best Regards
    Brad
    
    
    
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