Re: AP900 DEC sawtooth guiding


The log shows the calibration was near-perfect.  PHD2 does a bunch of sanity-checks on calibration and generates alerts when things don't look right - none of that happened.   I suspect there's a non-zero Dec backlash compensation setting in the mount, and that's what needs to be dealt with next.  Since this is a second-hand mount, Anis doesn't have any way to know what might have been programmed by the original owner.


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