Thanks guys for the replies and the suggestions. I think I have someone who has a secondhand one. I did talk to Cris and he does sell the SharpStar 65Q. I wished to go secondhand on this one (otherwise I would go with Cris as I appreciate his advice) to see what I can do with wide field imaging with it.
The only thing is trying to work out if it requires a spacer or not, particularly if using with a DSLR.