Recently bought one second hand from IIS classified and got a couple of PMs asking questions so here's a couple of test shot with the CF triplet 90/600.
Without corrector:
here and
here (taken last week)
With the corrector at 105mm:
here (taken tonight through a sucker hole).
All pictures are in-focus on axis. The scope will not cover a CCD the size of a QHY8 without the corrector which retails at approx $370.00 inc. shipping.
The ideal spacing is between 103mm and 109mm. Will have to play with it until I hit the sweet spot but it seems to work fine.
The scope is very sharp and easy to focus. Also keeps focus overnight which is a plus. It's not exactly light though even being CF.
It will support heavy magnification (x3/4/5/6) and still show very sharp and defined focus point.
Standard focuser is ok but not suitable for a heavy camera or long extension tubes unless it's braced with an extension plate and tube rings. (Will post later scope arrangement)
But all in one I think the scope is bang for the buck.
PS: added a couple of shots of the scope at focus. Focuser is almost all racked in which is good. The alu plate is 15mm thick. It's the plate I'm already using to balance my newt so I just added holes and tapped it to adapt it to the refractor. The original clam shell that came with the scope is the first then two WO tube rings. The dovetail is a losmandy double male. The whole setup is about 8kg I'd say.