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    Re: Instrumental error?
    From: Ken Muldrew
    Date: 2005 Apr 25, 09:59 -0600

    On 24 Apr 2005 at 16:28, Fred Hebard wrote:
    
    > One trick is to set the sextant with the objects slightly apart, as
    > appropriate to rising or setting, and wait for them to converge.  The
    > biggest challenge then is timing the convergence accurately.  This is
    > also a recommended trick for shots on water using a real horizon.  (It
    > doesn't work for meridian shots, such as the sun at noon, btw).
    
    That depends on how long your willing to wait.  ;-)
    
    Ken Muldrew.
    
    
    

       
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