How telescope magnifications work and why eyepieces are the best upgrade for achieving your stargazing goals. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Pick up almost any book that talks about telescopes, eyepieces, and magnification, and the author will probably expound the “60x-per-inch rule” or “2.4x per millimeter.” This means you shouldn’t pump ...

Buying a telescope is a big step, especially if you’re not sure what all those terms — f/ratio, magnification, go-to — mean. So, to eliminate confusion and make sure you understand what you’re buying, ...

Michael J. I. Brown receives research funding from the Australian Research Council and Monash University. While the unaided eye or binoculars can reveal much of the night sky, a telescope reveals so ...