Assuming you are building a pointing model correctly, and your gotos on the same side of pier are still off, 99% of the time it's bad date/time and/or location information
also the majority of the time when people say "my date/time and location is correct, i am 100% confident" it ends up being one of those values is off
Just a follow-up.? Two nights ago was a night from hell, like all of us have now and then.? Just could not get good pointing and tracking, despite very good seeing, and finally gave up after about 2 hours of having my patience tested.? Last night was much better, but I'm afraid I'm going to have to spend some time reading the "pointing woes" threads here.? What I've been having to do is align on a star close to the object I want to image, and then going to that object.? Otherwise, pointing is not real great most of the time.? I slewed to Denebola, which was not centered real well, but ok, then tried to slew to M65, which is right nearby, and it wasn't even in my first camera shot (at ISO 6400, just to see if the object was there).? Slewed back to Denebola, which was no longer centered, did an alignment on it, then went back to M65, and that worked.
And once again, Sirius was no longer on the BSL, even tho' it was still well above the horizon.