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    Re: Instumental error?
    From: Alexandre Eremenko
    Date: 2005 Apr 20, 22:58 -0500

    Bill,
    
    > is extremely difficult for me.
    > Could we located other stars in the the
    > same separation range as the problem areas
    > that might offer a different
    > (easier) sextant position?
    
    I am always chosing the stars for this business in
    convenient position.
    Locating two good pairs at the SAME distance is
    of course very hard.
    
    But I have large statistics, with stars and lunars.
    It is only a small part that I presented.
    
    I also don't think that the scope is relevant.
    What sort of deficiency in a scope can lead to
    a systematic bias? I suppose, only collimation.
    Collimation I checked, and in general, it can give only very small
    error.
    
    A
    
    
    

       
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