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Reflecting Telescope | Definition, Advantages & Disadvantages - Video & Lesson Transcript | Study.com
How is total internal reflection used in many optical instruments like a telescope, microscopes, etc.? - Quora
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Maksutov-Cassegrain Telescope Mak70 Telescopes for Adults 1000mm Focal Length 70mm Objective Lens Beginners Astronomy Telescope with Slow Motion Gimbal Tripod - Walmart.com
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Amazon.com: L-ROM FHISD 125mm Caliber Reflection Telescope,Telescopes for Astronomy,Telescope with Adjustable Tripod and 5x24 Finder,The Best Astronomy Gift,for Beginner,Adult and Kids : Electronics
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Maxvision 150EQ 150/750mm Newtonian Reflection Equatorial Astronomical Telescope with EXOS-NANO German Equatorial Mount
![Sir Isaac Newton's reflecting telescope, known also as the Newtonian telescope. It worked by concentrating light by reflection from a parabolic mirror, instead of by refraction through a lens. Newton (1642-1727) first Sir Isaac Newton's reflecting telescope, known also as the Newtonian telescope. It worked by concentrating light by reflection from a parabolic mirror, instead of by refraction through a lens. Newton (1642-1727) first](https://c8.alamy.com/comp/2BE0G89/sir-isaac-newtons-reflecting-telescope-known-also-as-the-newtonian-telescope-it-worked-by-concentrating-light-by-reflection-from-a-parabolic-mirror-instead-of-by-refraction-through-a-lens-newton-1642-1727-first-displayed-this-telescope-to-king-charles-ii-based-on-a-design-of-1668-it-had-a-focal-length-of-15cm-and-could-magnify-30-40-times-inadequate-mirrors-meant-that-the-newtonian-reflector-was-not-as-refined-as-contemporary-refracting-telescope-until-1722-when-james-haley-ground-a-quality-parabolic-mirror-this-drawing-was-published-in-the-philosophical-transactions-of-the-royal-2BE0G89.jpg)