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    Re: Whole Horizon Mirrors
    From: Geoffrey Kolbe
    Date: 2011 Apr 24, 08:03 +0100

    There seems to be a general acceptance that the light throughput for
    whole horizon mirrors is less than for split mirrors. I admit I am
    ignorant of whole horizon mirror sextants, but I would assume that
    this horizon mirror is coated for 50% reflectance (and transmission)
    so the light throughput should be just the same as a split mirror
    sextant. Shouldn't it?
    
    Geoffrey Kolbe
    
    
    
    
    

       
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