[masraum]

^These guys^ are the experts, but I think a wedge is a cludgy way to go. If you're trying to do AP, which is a precision process, you don't want to be jury rigged.

I had a buddy that had a scope with an alt-az mount and a CCD camera (no wedge). The images that he got weren't great. Anything that wasn't dead center was smeared.

If you were determined to go with that scope, then you'd probably be better off taking the money that you saved by getting it used and using it to buy a decent GEM. (not cheap, especially for a huge, heavy scope like that).