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    Re: How does the AstraIIIb split mirror work?
    From: Chuck Taylor
    Date: 2004 Apr 23, 08:30 -0700

    --- George Huxtable  wrote:
    
    > Indeed, this is the only purpose I can see in
    > having that unsilvered area of glass at all.
    > Otherwise, in a split-horizon sextant the horizon
    > mirror could just as well be truncated at the edge
    > of the silvered part.
    
    I have seen Tamaya sextants made that way, with no
    glass at all on the left side of the "horizon glass".
    
    Chuck Taylor
    North of Seattle, WA, USA
    
    
    
    
    
    
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