Hi all,
Well good news, I got the guiding sorted thanks to many people giving advice. In the end it was differential flexure that was the source of the problem.
Now for the image. Big subs with as many as I could get on each occassion.
Seagull Nebula now properly centered.
Horse head just on its own. I have done this to death and only see that 40 minute subs and heaps of them will produce a deeper result. Some strange dark marks near the top of the image. I might have to check my camera for icing up or something dangling.
Thors Helmet. Lots of subs but still a hard target to get hold of. Interesting Ha showing through though.
Your comments are most welcome. thanks for looking.