Hello,
I have a question regarding the focusing. For some reason, I cannot seem to gain focus on any of my eyepieces without combining the 1.25" and 2" adapters. If I use just the 1.25" alone, I cannot gain focus, but if I attach that to the 2" focuser adapter and then insert it into the focuser, I am able to gain focus? Is this a collimation issue? Or is it something specific to this scope? It is a Skywatcher Skyliner 250PX. It seems as if I cannot draw the focuser out far enough with just the 1.25 attached, if I have both adapter attached I seem to be able to bring out the focuser far enough to focus. Thanks.