Thanks for your advice and ideas Mike, all of it is very much appreciated

. You are right about my processing, something I am quite inconsistent with.
I do have a laptop, and I probably could use a webcam. My main reason for using a DSLR is the convenience (ease of setup/focussing etc). A webcam, I believe, would make it a little more time consuming for setup etc, and while it looks like I would get better results with one, I would definitely have less opportunity to image. I have always wanted to squeeze as much out of the setup as I can, and with the better seeing now with Jupiter I have had a good chance at it. Processing, though, is a challenge. A DSLR, especially the 600D, also gives me alot of flexibility in wide or narrow fields (evidenced by the Ganymede shot and the 4-moon shot above.
Thanks so much Mike for the advice and the tutorials you have given. I do't think I'd have got this far without this site
Cheers,
Tom