Hi,
I've got a GSO 8" Dobs and just received my (early) Christmas present, a GSO Superview 30mm (2"). I tried it out yesterday and I have problems to get it into focus. To get it to focus I have to pull out the focuser to the maximum plus pull out the eyepiece out of the focuser by about 3-5 mm. So I though, ok I'll get a 35mm extension tube (not too large), that might do the trick... I was wrong. Now it seems the 35mm is too large (needs to be shorter). Has anyone any idea what I can do? If I pull the eyepiece out about 3-5mm it's ok, but wobbles in the focuser...
Cheers
Tom