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Never had any backlash issues with the focuser. Keep in mind that the Q has the Tak 1:10 micro focuser - not that it should make a huge difference.
The FSQ has a theoretical CFZ of 55 micron so you've got a "little" room as you make a pass. To be honest, I've never determined how many steps it takes to move through the CFZ. Sure you could do the math based on the figures provided if you're keen.
Temp. comp. - Nice. Yes, I've used it, but don't any more. I use ACP for data acquisition which refocuses at predefined intervals or between filter changes.
Sorry to hijack the thread Matt.
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