The most basic check of your mount's polar alignment to the NCP (North Celestial Pole) is pretty infallible. I had been infrequently...

Calculate your image scale in arc-seconds per pixel and use that to see if you are over- or under-sampling. Regardless of the physical...

A snagged cable and a >>pop!<< sound, and my faithful Starlock was no more. What I've done about it since. I'm going through the most...