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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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