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    Flare artifact
    From: Jim Thompson
    Date: 2005 Jul 6, 06:35 -0300

    My sextant has developed an annoying flare artifact.  It appeared the other
    day when I was doing sun sextant shots on a very bright summer forenoon.  I
    was using a split mirror and the 6x telescope (Astra IIIb)  The flare
    appeared around the right half of the sun when the sun's image was in the
    left side of the field of view, but vanished leaving a clean image of the
    sun if I moved the sextant so the image was over the black half of the field
    of view on the right.
    
    I cleaned all the shades, the horizon glass, and both external surfaces of
    the telescope's lenses (ie front and back), but no imrovement.
    
    Any suggestions?  Sounds to me like I might have a problem inside the
    telescope.
    
    Jim Thompson
    jim3 at jimthompson dot net
    www.jimthompson.net
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