The Essential Guide to Astronomy
Choosing Your Astronomy Equipment
Optical aberrations limit the performance of an eyepiece. Here are seven common problems, with solutions where applicable.
By: Al Nagler
July 17, 2006
Telescopes: Guides & Recommendations
Answers to some of the most common misconceptions about telescope magnification.
A telescope is only as good as its eyepiece — and a good one can make a big difference. Here's a quick look at the different types of eyepieces available.
By: Adrian R. Ashford
July 16, 2006