This might be a silly question.. but the two screws marked in black lines at the back of this OTA; has it got anything to do with the primary mirror or are they just accessory screws for me to mount brackets etc.?
second question.. so I purchased this 60mm guidescope (as you can see in the pic) and attached it to my OTA hoping to guide it when my ZWO Asiair pro and ZWO Asi120mm mini arrives.. After further online reading, the question I have is if this scope will actually guide the 12inch lx90 at all? should I just not bother and go for an OAG instead? if so, what would be your recommendation?
