Thanks Justin for your comments. Here is image from the 29-1-12 with less vignetting, but still some. Just used Gradient xterminator a few more times.
http://i638.photobucket.com/albums/u...s/cb09cec6.jpg
Tried for the "umpdeenth" time to follow how to reduce vignetting with R.Scott Ireland's book Photoshop astronomy, and acturally got it done. It isn't hard to follow, just that dure to my lack of know-how I had trouble following the procedure. Still had some vignetting around the perimeter, so cropped that out.
http://i638.photobucket.com/albums/u...s/090cc349.jpg