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An optical telescope uses lighty to create images for the user to see. Refractors use lenses to collect the light whilst Reflectors use mirrors. Both these types of optical telescopes can be found in Observatories.
Telescopes where invented in the17th centry and have progressed hugely since then. The first was built by Galleo in 1610 and could magnify nine times, but his later telescopes could magnify up to thirty times.
Telescopes where invented in the17th centry and have progressed hugely since then. The first was built by Galleo in 1610 and could magnify nine times, but his later telescopes could magnify up to thirty times.
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