Before I start I will warn you that I have no idea what I'm doing. I have a Dobsonian and a Canon D30 DSLR. I bought a 2" Prime Focus Adapter to fit the camera to the scope. It winds in to get almost in focus, but then get's "stuck" and won't go any further to get a sharp focus. Is there some other adapter or extension tube or something that I need to fix this problem?
Michelle