We can think of reflector telescopes are those that use mirrors for gathering light rather than rather that lenses (refractors). They were first conceived soon after the development of the refractor in the 1600's but largely due to the poor quality of mirrors available back then did not become popular until the mid 1700's.Even though there were many researchers active in the conceiving from the reflector, many of us usually consider Isaac Newton because very first to build up a practical
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