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My Celestron - being carbon fibre - is pretty temperature immune to focus change. I never use the fine focuser for imaging - only rough focus if I ever do visual.
The Meade motor focuser alone is used when I do astro photography (so the primary mirror never moves if I am lucky) - but as said the Meade unit is not based upon a stepper motor - so no matter its precision or lack there off a ASCOM driver if it existed would have to simulate a focus position then up or down its count relative to the length of the change position pulse sent to it. It would not be anywhere near as accurate and repeatable as a stepper motor design, let alone a great one like the Moonlight with a temperature monitor for compensation built in to the package.
Really I just wanted to short term work around as I learn SGP before I upgrade the focuser. Would happily go Moonlight again so long as I can clearly distinguish two motorfocusers - which was associated with which scope and camera in SGP. Having 3 ZWO cameras - defined as 1, 2 and 3 - bit pot luck which camera gets which designation some days - is a real pain!
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