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 ...

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 ...

This all-inclusive refractor is best for observing planets and the moon, but still able to give skywatchers some glimpses of deep-sky objects.