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?
11/16/18What is a waterproof spotting scope?
10/16/18Benefits of a Bigger Aperture
10/04/18Can I motorize my manual EQ Mount?
09/27/18NexYZ Tension Adjustment Guide
09/18/18How do you Align your EQ Mount?
07/03/18What is a Diffraction Spike?
05/14/18Smartphone Adapter Tips
05/01/18Why don't the images I see through my telescope look the same as photos I see taken with the same type of telescope?
04/03/18NexYZ Imaging Tips and Tricks
03/27/18Can I transfer images from the internal memory of my Digital Microscope to an SD card loaded in the SD card slot on the unit?
03/20/18My Celestron Ultima and Regal spotting scopes have threads in front of the objectives. What size photo filters do they use?
03/13/18I am using rechargeable batteries with my Celestron GoTo mount, and the mount will not power up even though the batteries are new and fully charged. What’s the problem?