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    Re: Sextant certificates
    From: Alexandre Eremenko
    Date: 2006 Feb 2, 08:55 -0500

    Ken,
    Thank you for reminding us this number 20" approx 0.3'.
    It is true, within this margin, the two certificates I obtained
    last summer agree: in the sequence of numbers produced by Freiberger,
    none is greater than 20".
    
    On the other hand, for the lunars (which is the primary use of my sextant)
    unknown 0.3' arc non-uniformity is too bad.
    So "all practical purposes" by this definition do not include lunars:-)
    
    
    A
    
    On Wed, 1 Feb 2006, Ken Gebhart wrote:
    
    > Just for the record, I did state what the phrase " the error is negligeable
    > for practical purposes" meant. That is, less than 20 sec error, by German HO
    > dictate.
    
    
    

       
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