I currently use an ipolar to PA and have just gotten into guiding and I've seen all the options to do your PA with the guide scope and software like sharpcap or APT or whatever. My ipolar is mounted center axis on the mount but my guidescope is mounted off-axis to the side of the telescope where the finder would normally go.
Since the guidescope is off axis, if I use the guidescope for PA, why isn't the PA going to be all over the place once the mount starts tracking and the guidescope is moving? I am assuming the software somehow corrects for this offset? And if so, is using the off-center guidescope just as accurate as using the on axis ipolar?