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The problem of orthogonality won't be fixed by adjusting the dovetail. This needs to be fixed by aligning the declination shaft to be exactly orthogonal with the RA shaft. Do not confuse cone error with orthogonality.
The first problem is to devise a method of measurement with arc second precision.
If you can do this a G11 could be adjusted by shimming the joint between the Declination shaft assembly and the RA shaft assembly or re-machining these surfaces with a greater precision and accuracy. However I don't believe you will be able to improve on the factory machining accuracy.
Barry
Last edited by Barrykgerdes; 08-07-2013 at 08:17 AM.
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