01/03/19What's the difference between Variable Polarizing filter, the Neutral Density Moon filter, and the Moon filter?
12/27/18RASA 8 Questions and Answers
11/29/18Why does there appear to be a black circle in the middle of my image when I look at a star or planet?
11/29/18Why can't I see anything in my telescope when I have the Moon centered in the crosshairs of my finderscope?
11/16/18What does magnitude mean?