Good to see you made something of the nigt Brendan, unlike myself who ended up with no images to speak of
You've got good focus and tracking on those images, that's for sure. I think you should be able to get more out of Orion in 5 min with your modded DSLR ...what f/stop you at?... but then I guess conditions were ordinary.
What software do you use for capture? .. meant to ask you on the night.
Roger.