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    Re: Perpendicularity again. was: Adjusting Central Mirror
    From: Bruce Stark
    Date: 2004 Oct 11, 20:09 EDT
    Doug and Jim,

    With my Tamaya Spica I just line up the edge of the arc itself. You have to get the light and the background just right, though. Otherwise the reflected part will look different than the direct part and be hard to match.
       
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