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    Re: Sextant Scope Parallelism (was Re : SNO-T Sextant)
    From: Robert Gainer
    Date: 2004 Aug 16, 17:31 +0000

    Ken,
    Thanks for the note. The post is at a right angle to the frame. When I
    shimmed it I put the shim between the post and the frame at the surface of
    the frame. The scope now is tilted away from the frame. I also tried
    shimming the edge of the post so that the scope would be closer to the index
    or shimming the other side of the post so that the scope will be further
    away from the index. So I have tried all cases of adjustment. In all cases
    the image stayed the same in the mirror and moved in the field of view in
    the scope. I am going to try this again when it stops raining and I can see
    something that gives me a larger angle to measure. The effect is sure to be
    more pronounced as the angle get larger. At this point I am just confused by
    the difference in what I see and what it was suggested that I would see.
    All the best,
    Robert Gainer
    
    > >Robert,
    >
    >Unless I missed a message, it looks to me like no one replied to your
    >posting.  As I read it, it seems your shimming (bottom or top of post) only
    >serves to tilt the scope upwards or downwards - not left or right so as to
    >be unparallel to the frame, which is what this is all about.
    >Ken Gebhart
    
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