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Two eyes are better than one

Find out why binoculars can help you see more.
While some people assume telescopes are the best way to scan the skies over one's backyard on a clear night, often it is binoculars that can offer the better view. One of the reasons is that, with binoculars, an observer can use both of his or her eyes. Our perceptions of color, contrast, and resolution improve significantly when using two eyes instead of one (like when using a telescope). Try this test on a clear, moonless night: With both eyes open, cover one with your hand and look at the sky...

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