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What Are Optical Telescopes Used for?
Optical telescopes gather light from an object and send it along the focal plane to present the viewer with a real image of the object. Optical telescopes help photographers, stargazers and astronomers spot the details of an object too distant to see in detail with the naked eye. According to Plotner, optical telescopes come in three varieties: refractor telescopes that use lenses, reflector telescopes that use mirrors and catadioptric telescopes that use mirrors with a lens design. Though slightly different in design, all three optical telescopes have the important job of zooming in on distant targets
Stargazing
Photography
Astronomical Research
Breakthroughs include understanding the age of the universe and a realization that the universe's expansion is accelerating
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