Chris
I use a 72mm guidescope with an x/y shifter so that I can center the guide camera exactly to the imaging camera because without it I found the two were not exactly aligned when fully clamped down. So far there has been a GUidestar in the camera at least 90% of the time but if I want to find a better one then I can use the XY shifter which I find a real advantage.
Allan
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