Binocular Astronomy

The advantages of using both eyes for astronomical observing are many and considerable, largely because of the way the human brain processes visual information. Binoculars – the usual kinds – are incredibly useful for wide-field observing, but "binocular astronomy" is much more than that, including binocular eyepieces that can be fitted to normal astronomical telescopes, and even giant binocular telescopes that are effectively two astronomical telescopes working in tandem.