I thought I'd share something I've just figured out last night. I know you guys have gone through a bit of trials and errors with those new GSO RC scopes. I believe they come fitted with a GSO 10:1 micro focuser standard. I have one fitted on my C11 as well. This week-end I put the C11 in pieces again and I did a mechanical aligment of the Primary and the Baffle tube. I had a collimated laser directly bolted in the baffle tube projecting a dot at 3m on a wall on a cardboard marked with a cross. The scope was held on a flat bench. Rotating the laser in the baffle tube showed absolutely no circular motion on the laser dot. Then I did the same thing for the primary optical axis. Finaly I put the GSO focuser back on the back of the mirror cell and stuck the laser in the focuser this time. I was absolutely shocked at the offset I was getting with the focuser mounted
. It wasn't a problem with the adapter rings at the back of the SCT or the focuser barrel itself because I checked that, but it is an issue with the fastening mechanism that holds the camera/nose piece in the barrel of those focusers.