Thanks for your observations Ken. I understand all that you are saying.
I am careful with centreing stars, and always approach using up and right movements to minimise backlash. If after all routines are completed
I end up with Go To where the target is outside the F.O.V. so be it. The only time that it might be a real problem is with very faint targets. I would have to rely on the inaccuracy being always the same amount, and in the same direction.
raymo
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