Dan, first off you should be very pleased with that image.Well done.
The focus is almost perfect. It looks like the camera is not square to the focal plane, although the camera is held tight it is flexing the focuser due to weight or the focuser needs to be squared up. Most Newt focusers are adjustable. The final problem is fixable by a comma corrector.
A little extra info about the type of equipment used would be great.
The subs are short so it is a little difficult to see tracking error.
Keep up the good work.
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