I unplugged one of the USB A cables ends from the back of the iMac and replugged it in and it connected right away. Focus seems to work while testing it on my bench with my 200mm f2.8. F-stops are set in increments from 1-22. I do not know if this corresponds to custom f ratio set points or if it is approximating the closest Canon f-stop.

Looks like this driver needs to be moved to the focuser driver folder. Should be fun to test it out under the stars hopefully soon

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