Thanks Robert.
I read your post just before having a go at reprocessing the 21-25_0002 image in K3CCDTools. I think you are right it could do with more saturation for my liking.
Anyway here's the image reprocessed in K3CCDTools. I stacked 304 images, stretched the histo and unsharp mask. Rotated, cropped and bumped up the saturation in PS CS2. ...oh, and I tried the 2x enlargement in K3CCDTools. I have to say I like the result of the 2x enlargement. My initial impression (based on this one image only!
) is that K3 does a better job on the enlarging that Registax. Just my opinion at this stage.
Al.