Collimation aligns a telescope's parts for the sharpest images. Most telescopes need collimation at some point; reflectors need it often. Tools like laser collimators or Chashires help align the ...

Why you can trust Space.com Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test and review products. The ...

Getting your first telescope should feel exciting, not frustrating. If I avoid a few common beginner mistakes, I can turn ...

Wrapped up in a compact package thanks to the Maksutov-Cassegrain catadioptric, the Celestron Astro Fi 102 is a no-frills telescope best suited toward lunar and planetary observing. The motorized ...

While telescopes are designed to work outside, it sometimes takes some tender care to keep them working at their best. Over time, telescopes will pick up dust, and depending on how often they are ...