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Early telescopes were all refracting telescopes of the kind Galileo made. While they revolutionized the science of astronomy, ...
1609: Refracting telescopes Image Title: “Galileo offering his telescope to three women (possibly Urania and attendants) seated on a throne; he is pointing toward the sky where some of his ...
Refracting telescopes use lenses — combining at least two, and as many as four, pieces of glass — as their objective (the primary light-gathering device). Reflecting telescopes use mirrors to ...
Early telescopes were all refracting telescopes of the kind Galileo made. While they revolutionized the science of astronomy, they had some innate downsides.