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    Re: How does the AstraIIIb split mirror work?
    From: Ken Muldrew
    Date: 2004 Apr 25, 07:47 -0600

    From:                   Jim Thompson 
    
    > By "front" I meant the side toward me, toward the telescope, not the
    > side away from me, toward the horizon.  Were we talking about the same
    > "front"?
    
    Yes, the paper that I'm using to block the glass is lying right overtop of
    the glass, between the scope and the glass. When I do this with a sight
    tube I can clearly see the paper and the mirror/glass split, but when I do
    it with a 5x scope, the paper is too dim to notice and I see a full view of
    the index reflection across the whole field of view. I did this in partial
    darkness, so perhaps if there was a bright light shining on the paper, it
    would reflect enough light to interfere with the image.
    
    I see the effect you described in your initial post of this thread even if
    there is no glass surface for the image to reflect off of.
    
    Ken Muldrew.
    
    
    

       
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