Quote:
Originally Posted by peter_4059
I agree best to make the mount as good as you can but failing that guiding in one direction is better than continually fighting backlash. The misalignment is not that hard to do:
Scope pointing to east horizon, star drifting north => raise altitude
Scope pointing to meridian (CW in east), star drifting north => rotate AZ clockwise
Easiest way is to use PHD2 drift align tool and ensure the trend line is going the same way (either up or down) for both the AZ and the ALT adjustment steps. Also if the slope of the line is the same in both cases the the drift rate should be similar.
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Aha, thanks for that Peter. I always have difficulty visualising things like this.