File:Telescope newton schema.png - Wikimedia Commons
File:Newtonian telescope2.svg - Wikimedia Commons
Le télescope de Newton
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![Reproduction of rough sketch by Isaac Newton showing a reflecting telescope and its components] | Library of Congress](http://tile.loc.gov/storage-services/service/pnp/cph/3c10000/3c10000/3c10400/3c10449v.jpg "Reproduction of rough sketch by Isaac Newton showing a reflecting telescope and its components] | Library of Congress")
Reproduction of rough sketch by Isaac Newton showing a reflecting telescope and its components] | Library of Congress
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File:Schéma-XMM-Newton-fr.png - Wikimedia Commons
Plate showing diagram of the optics of a reflecting telescope (Fig. 29). From 'Opticks' Isaac Newton (London 1704). Engraving Stock Photo - Alamy
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