I’m really confused here, so please help!
I have auto focus motors on my two refractors. A Microtouch motor on a 120mm with R&P focuser. And a Moonlight motor on the 80mm with a Moonlight Crayford.
I used a dial indicator on both of them to measure and record the microns per step.
And that is when I noticed both focusers/motors have some backlash.
So, I set about trying to adjust it in SGP by putting some numbers in the provided box.
However, I just can’t seem to understand whether to put the compensation “IN” or “OUT”.
In other words, I’m not sure what direction is correct for each focuser.
I can see by the indicator movement (step-step-step) that the compensation is being applied by SGP.
But, trying it each way does not seem to remove the backlash, it just shifts it to the other direction.
Under actual imaging conditions, I think i have the backlash wrong no matter how I set it.
It’s making the autofocus miss the best results, although sometimes I do get good curves, just not consistently.
Please, what am I misunderstanding about how this system works?
A step-by-step review of the backlash compensation setup procedure would really help me.