![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/2BE0YWT/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-2BE0YWT.jpg)
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
![Amazon.com : HD Telescope, 150mm Reflection Astronomical for Professionals Beginners Space Reflector Adult Children Spotting Scope : Electronics Amazon.com : HD Telescope, 150mm Reflection Astronomical for Professionals Beginners Space Reflector Adult Children Spotting Scope : Electronics](https://m.media-amazon.com/images/I/51tF0mag3SS._AC_UF894,1000_QL80_.jpg)
Amazon.com : HD Telescope, 150mm Reflection Astronomical for Professionals Beginners Space Reflector Adult Children Spotting Scope : Electronics
![Amazon.com: Construction D'Un Telescope Par Reflexion, De Mr. Newton (1741) (French Edition): 9781160920209: Passemant, Claude Simon: Books Amazon.com: Construction D'Un Telescope Par Reflexion, De Mr. Newton (1741) (French Edition): 9781160920209: Passemant, Claude Simon: Books](https://m.media-amazon.com/images/I/418DzT-wEqL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Construction D'Un Telescope Par Reflexion, De Mr. Newton (1741) (French Edition): 9781160920209: Passemant, Claude Simon: Books
![Oculaire De Télescope à Réflecteur, Oculaire De Télescope à Réflexion Durable Et Robuste à Centrage Rapide Pour Le Bricolage | Walmart Canada Oculaire De Télescope à Réflecteur, Oculaire De Télescope à Réflexion Durable Et Robuste à Centrage Rapide Pour Le Bricolage | Walmart Canada](https://i5.walmartimages.com/asr/c29698af-6c08-435f-9fb6-b7a3f50cf3fb.5867cd8304a60077ebade5fa0ddcff09.jpeg?odnHeight=450&odnWidth=450&odnBg=ffffff)
Oculaire De Télescope à Réflecteur, Oculaire De Télescope à Réflexion Durable Et Robuste à Centrage Rapide Pour Le Bricolage | Walmart Canada
![Construction D'Un Telescope Par Reflexion, De Mr. Newton (1741) (French Edition): Passemant, Claude Simon: 9781160837538: Amazon.com: Books Construction D'Un Telescope Par Reflexion, De Mr. Newton (1741) (French Edition): Passemant, Claude Simon: 9781160837538: Amazon.com: Books](https://m.media-amazon.com/images/I/51-eDvsvs4L._AC_UF1000,1000_QL80_.jpg)
Construction D'Un Telescope Par Reflexion, De Mr. Newton (1741) (French Edition): Passemant, Claude Simon: 9781160837538: Amazon.com: Books
![Amazon.com: Construction D'un Télescope Par Réflexion, De M. Newton, Ayant Seize Pouces De Longeur, Et Faisant L'effet D'une Lunette De Huit Pieds (French Edition): 9781173809959: Passemant, Claude Simon: Books Amazon.com: Construction D'un Télescope Par Réflexion, De M. Newton, Ayant Seize Pouces De Longeur, Et Faisant L'effet D'une Lunette De Huit Pieds (French Edition): 9781173809959: Passemant, Claude Simon: Books](https://m.media-amazon.com/images/I/71tOVgNY9yL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Construction D'un Télescope Par Réflexion, De M. Newton, Ayant Seize Pouces De Longeur, Et Faisant L'effet D'une Lunette De Huit Pieds (French Edition): 9781173809959: Passemant, Claude Simon: Books
![Amazon.com: Adult Astronomy Telescope,125mm Caliber 700mm Focal Length, telescopes for Astronomy Beginners and Kids, Reflection Telescope with Adjustable Tripod (Color : Package 1) : Electronics Amazon.com: Adult Astronomy Telescope,125mm Caliber 700mm Focal Length, telescopes for Astronomy Beginners and Kids, Reflection Telescope with Adjustable Tripod (Color : Package 1) : Electronics](https://m.media-amazon.com/images/I/61XJ1pBtIKL.jpg)