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    Re: Lunar eclipse report
    From: Herbert Prinz
    Date: 2004 Nov 2, 02:53 -0500

    Alexandre Eremenko wrote:
    
    > If Ptolemy and Brahe did not use water clock,
    > then what did they use for the timing?
    
    The sky.
    
    Brahe measured star (or sun) altitudes simultaneously with the event to
    be timed. Cook still did the same for his transit and eclipse
    observations. It's good to have an assistant for this. And you can do it
    that way for lunar distances if you loose your watch. You can find time
    and position simultaneously. (But the information won't do you much good
    at sea without a watch).
    
    Herbert Prinz
    
    
    

       
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