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Placement Of Minor Axis Offset

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Posted by Briav Reed on December 5, 1998 08:39:45 UTC

I know that the proper placement of the diagonal must be offset from the optical axis, but all the material I have read does not give steps for measuring. Is the measuring done from the sides of the tube? What if the tube is not perfectly round, as in a cardboard tube? Thanks for any Info.

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