Nice start Peter. You should have a lot of fun with this sort of rig and should produce some very classy images. I would suggest you extend the exposure time out a bit and you will have a lot more data to work with. You also need to concentrate on getting your focus spot on and the stars will shrink a little more also.
I will definitely try longer exposure times on my next
imaging session. Focusing was a bit tricky and I certainly need to spend some more time in getting better focus.
Thanks for your input.
You are going to have a ball with this set up - I use a ST8300M on an AP130 EDT (f7.5) with Astrodon E series filters. I continues to amaze me what it is capable of - the ST8300 makes the 5 inch punch well above its weight.
I found manual focus is tricky with the AP focusers because they are so good - seems oxymoronic. All i had to do was touch the focuser knob and think about turning it and focus would shift.
I've put a Moonlite on the AP which will allow autofocus with FocusMax. Yeah - its almost vandalism but I still have the AP focuser to stick back on it if necessary. Im waiting to get the scope back - (A mate is machining a flange to take the moonlite - it was a Synta flange) but I have found this method to be extemely good and repeatable on other good quality Apo's. Will report on performance when I get it back.
Anyway mate well done and get ready to have some fun.