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Parallax Hinged Rings and OTA Orthogonality


Mar 5, 2002

 


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#9005 Mar 5, 2002

I recently upgraded to a C-11. I bought it used and it came with a set

of 12 inch hinged Parallax tube rings on a universal dovetail plate.

(If you're not familiar with the rings, see

www.parallaxinstruments.com/ring.htm)



I like the things because I don't have to struggle with the heavy OTA

while getting the dovetail aligned, but now it's time to adjust

orthogonality.



I'm wondering if the felt linining -- because it's slightly

compressible -- will defeat the whole shimming process. If so, is

there a work around? The things are really handy.



Robert B.



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