Quote:
Originally Posted by peter_4059
I attached a dial gauge to measure mine but I recently saw a post on the sgp forum describing how to use a bahtinov mask to measure it. Focus with mask then step focuser a large number of steps in one direction then same number in other direction. Then check with mask and adjust with extra.steps if necessary to return to perfect focus. This tells you how many extra steps of backlash are present. Repeat process in opposite direction.
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Hmm, interesting. I think that method is just using the mask to make the changes more evident?
Quote:
Originally Posted by Shiraz
another thought Roger, do you have the SharpSky attached to the 10:1 or directly to the main shaft? The 10:1 might have a bit of absolute position variability.
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It is attached to the main shaft, good to check
