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Hi Joe,
It’s highly likely, looking at your image, that it has nothing to do with PA and everything to do with the smoothness of your mount. I also have a C9.25 and I can tell you that even guiding that sort of focal length is a nightmare let alone unguided. Easiest way to describe it to you is you’ve got a focal length of 2350mm. Grab a stick 2.5m long and hold it out in front of you and try and keep the other end of the stick steady. Nigh on impossible. This doesn’t mean you can’t image with this setup. It just means setting some limits. If you try for 30 second exposures, and lots of them, you’ll probably find you can throw out the ones where the movement has impacted the sub and stack the remaining ones. You should then be able to do some pretty good galaxies or planetary nebulae.
Hope this helps
Ryan
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