G'day Scotty,
You can get an idea of what PI can do with (your) difficult data from this thread:
http://www.iceinspace.com.au/forum/s...d.php?t=139861
As Peter said, you're not going to get a perfect result from any software unless you can improve the quality of the raw data. Your sensor is much larger than your imaging circle, so cropping or divorce may be your only short term options if you're chasing perfection
Cheers,
Rick.