If you disengage stepper and move manually then the focuser loses where it is, the focuser position is invalidated for the stepper. When you reconnect motor it still thinks ts in the same position - but its not (you moved it) and that is a sure fire recipe to ultimately do some serious damage to your focuser by exceeding travel limits.
Quote:
Originally Posted by AstroApprentice
Hi Bojan,
Do you know why esteemed companies such as Moonlite and Starizona use stepper motors that can't be turned manually? ie is the Avalon motor that can be turned when not powered a new or inferior design?
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