Hi Mohamed,

This is on your WO Z61 with focuser motor under comtrol of the MyFocuserPro2?

How fast are you driving (steps/microsteps per second)? What type of stepper motor.

Drive too fast and miss steps, not enough motor torque and miss steps.
Not all clamped down on the shafts and slippage as Peter mentions.

What was the orientation of the scope, high alt, low alt ?

Gene
PS: For my video, sorry, it was meant to show a low repeatable backlash stepper motor gearhead.

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