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    Re: Calibrating a sextant scale
    From: Alexandre Eremenko
    Date: 2007 Nov 21, 13:10 -0500

    
    Ken,
    
    > For example, it would be crazy not to use a motorized equitorial
    > mount rather than holding the sextant by hand.
    
    Holding sextant by hand does not constitute a problem
    (in my experience). The main problem in my case is SEEING
    when two stars exactly coincide. The main problem is
    with the telescope (and eyes:-).
    
    Perhaps a very high quality 10x or 12x large diameter telescope
    will help. My 6x 30mm inverting is by far superior to
    the standard modern sextants Galileo scopes, but it is not enough
    to determine the arc correction with star distances.
    I can also mention capitan Schufeldt (one of the very
    few researchers
    of the accuracy of sextant observations whose paper is available
    to me). He strongly advocates high quality 12x telescopes
    for very precise observations.
    He also recommends using younger observers for this purpose:-)
    
    Alex.
    
    
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