www.rigelsys.com/focuser.html

Website is a bit 1990s but the products are good. Designed to fit stock focusers too and if he doesn't have an adapter he's a machinist and can make it happen for you. I use one on my C11 Edge and it's awesome (no crayford req'd). I also own his rotator; it's really simple and much cheaper than the mass-produced Pegasus ones.

He does have INDI drivers.

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