|
On my old mk1, I bluetacked a drinking straw to the unused focuser knob. Then varied the step size to find what setting just took up the gear slack and started the end of the straw moving when the motor was reversed after a few steps in one direction. Used that as the backlash setting in SGpro with good results. From memory it was around 20-30 ticks.
If you have the focus point drifting around, you could have trouble with slippage in the Megrez focuser itself. Never used one, but a quick look around the web is not comforting. FWIW, my similar low end Crayford focusers (modified GSO and SW) can reliably hold an imaging train of about 1kg, but not much more.
|