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Engraving depicting a refracting telescope on an iron stand and fitted with a finder. The instrument has two double convex lenses and is known as the astronomical telescope. Dated 19th Century Stock
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Johannes Kepler Storyboard by a7acf36d
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Drawing showing the lenses inside Kepler's telescope. 1878. Johannes Kepler (1571–1630), German astronomer and mathematician Stock Photo - Alamy
Johannes Kepler's 10 Major Contributions To Science | Learnodo Newtonic
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Johannes Kepler by Alex Peppes
