Star Tools to the rescue. It did the best job of getting rid or reducing the dust donuts and made a more pleasing less overly black background whilst still able to keep the galaxy bright and the halo shown more.
Its a good program.
Crop View:
http://upload.pbase.com/gregbradley/...53200173/large regular size
http://upload.pbase.com/image/153200139 large size
Widefield view:
http://upload.pbase.com/gregbradley/...53200139/large regular size
http://upload.pbase.com/gregbradley/...00139/original large size
Same links as before
Greg.