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Focus Cube Zero on Edge 8"

Posted: Tue Feb 22, 2022 2:19 pm
by CorsleyDarkSkies
Hello,

I'm noticing the focusing of the "zero" is not accurate, I would have expected if I go 100 and -100 I would end up at the same focus, Is this expected behaviour ?

Re: Focus Cube Zero on Edge 8"

Posted: Wed Feb 23, 2022 9:08 pm
by Evans
The position of the motor is 100% accurate. You have to calculate yout mirror backlash. SCT mirror might have some backlash on back and forth.