I do rough polar alignment first using the polar scope.
Then in Sharpcap, when I rotate RA axis clockwise, I am within 1-2 arcmin before adjusting elevation and azimuth of the mount. When I rotate counter clockwise, I am within 10 arcmin.
Then I adjust the knobs to within 5 arcsec per Sharpcap.
Judging by errors in PHD2, the first alignment is much better than the second one - there are far fewer corrections required, and the total error is better by 0.2-0.5 arcsec.
The Sharpcap manual says flexure - loose telescope/camera/cables. There isn't much I can do about telescope/guide scope and cameras - they are as strong as they will be. But the cables are indeed loose.
Here's a picture of the setup, just imagine a refractor/flattener/back focus adapters and rings/and ASI533MC Pro instead.
How would I even go about securing cables? Where do you attach them to minimize flexure? Do I need some kind of Velcro ties to fix them to the base of the telescope?
Edit: also, can I rotate the declination saddle 180 degrees, so the knobs that secure the telescope are on the opposite side? Does that do anything?
Edited by acrh2, 22 June 2021 - 08:11 PM.