Wow, great images there Gavin, and a great improvement on the first ones (and even they were great for a first attempt)... Far better than anything I've turned out yet, and I've got a 12" dob with a DBK618. Goes to show, good gear doesn't necessarily mean good pics. I'm mainly a visual observer, but on the odd occasion I do give some pics a try, I still struggle to turn out anything as good as your second ones...
Needless to say, Im in no position to offer advice, just praise... Well done, keep em coming
Cheers
Davin (with a D
)