[PRejto (Peter)]

Thank you all for your help!

Greg, I'm not sure where you are getting the .57 arcsec figure. If you plate solved my M83 image that image was taken with the barlow at a slightly different distance from the CCD. The photo below, taken at 2x2 binning, was taken just before the PE run I posted in my first post. When I collected data I didn't bin.

The plate solve shows 1.08 arcsec at 2x2, and it shows a position angle of 2 degrees 57 min from North. The MX manual states to have the camera within 5 degrees. Am I incorrect about this?

Yes, when I measured error after saving the curve to the mount he box was checked! And I did clear the previous curve before saving.

Josh, I did save the curve with the west box checked and unchecked, and measured hoped for improvement in both situations.

Paul, I appreciate hearing that you used such short exposures over a long period of time. It does seem clear to me that I have not collected enough data and this really gives me something to work on. It shouldn't be too hard given I have very little drift while collecting.

Thanks again everyone. Your help is greatly appreciated!! )Please let me know if I've got the camera positioned incorrectly by looking at the plate solve. That would explain everything!)

Peter