The distance between your eyes and the binocular eyepiece lenses. If you wear glasses, look for a larger eye relief number to allow for more space between your glasses and the binoculars.

This is where binoculars have an advantage over even the best telescopes available. Most telescopes use a single eyepiece. Binocular literally means "two eyes". You get twice the opportunity to ...

Binoculars’ optics consist of three main components that affect their performance: the ocular lenses (in the eyepiece), the objective lenses (the lenses that are farthest away from your face ...

Providing a closer look at the stars, galaxies and nebulas on a budget, these astronomy binoculars are a great first pair to ...

I found it useful to have a tripod that has an elevator column so that you can smoothly adjust the eyepiece position for those who are not the same height. You can purchase the binoculars with a ...

A 2″ eyepiece delivers a wider true field of view (the actual amount of sky visible) than a 1¼” eyepiece of the same focal length. Two factors determine the true field: the telescope’s ...

Adjustable eyecups, which are common on most modern binoculars, serve the dual purpose of excluding extraneous sidelight and positioning the eye pupils the correct distance from the eyepieces so as to ...

Even after peering through thousands of models, binoculars still amaze me with their magical capability to reveal hidden worlds. How else can you describe the knowledge you gain by viewing and ...

Binoculars can be much more helpful than telescopes at star-hopping to locate these deep-sky objects. Expect these objects to appear as faint, glowing clouds in the eyepiece. That said ...

so opt for models with soft rubber eyepieces and robust construction to withstand rough use. Older kids and teens will be able to handle slightly larger binoculars with a bit more power.