Doug S replied to the topic 'Question about focuser module' in the forum. 1 month ago

These aren't dumb questions at all. Most people are confused the first time they do this. I mentioned reading those instructions carefully because many focusers are slightly different in how they mount. I don't have your focuser. What I see from the picture is that there's a brass colored knob (likely the fine focus), and a black knob (likely the coarse / slow) focus. In my case, my motor vendor had me remove both knobs and attach the motor coupler to the slow focus knob. If you connect to the fine focus, it will take 10x the number of counts to move a revolution. I'm sure that once you git fiddling with it, you'll get it figured out pretty quick.

On the CFZ, note that the "new" way of calculating this is somewhat important. The reference is a good read for why. You don't want to get complacent and assume your CFZ is actually 2x as big as it really is....that leads to wasted exposures.....

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