I have a TPoint model that is about 4 arc seconds - but I’m using a RCT, so if I do small collimation changes, it shifts the image. I am normally within a few pixels after 1 or 2 iterations in SGP. If I don’t have TPoint, the initial pointing accuracy is about 100 arc seconds (with accurate timebase and polar alignment).
Before SB removed the sync capability (build 9334?) I would get within a few pixels on the first iteration.