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huygens_big.jpg
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Incomplete aerial telescope, 1686-1691 | Science Museum Group Collection
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Aerial telescope - Wikipedia
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Eyepiece, from Huygen's 210-Foot aerial telescope | Science Museum Group Collection
![Christiaan Huygens [Cristian Huygens] also Hugenius or Huyghens; (14 April 1629 – 8 July 1695), was a Dutch physicist, mathematician, astronomer and inventor, who is widely regarded as one of the greatest](https://c8.alamy.com/comp/2BHJ86F/christiaan-huygens-cristian-huygens-also-hugenius-or-huyghens-14-april-1629-8-july-1695-was-a-dutch-physicist-mathematician-astronomer-and-inventor-who-is-widely-regarded-as-one-of-the-greatest-scientists-of-all-time-and-a-major-figure-in-the-scientific-revolution-in-physics-huygens-made-groundbreaking-contributions-in-optics-and-mechanics-while-as-an-astronomer-he-is-chiefly-known-for-his-studies-of-the-rings-of-saturn-and-the-discovery-of-its-moon-titan-as-an-inventor-he-improved-the-design-of-the-telescope-with-the-invention-of-the-huygenian-eyepiece-his-most-famous-inventi-2BHJ86F.jpg "Christiaan Huygens [Cristian Huygens] also Hugenius or Huyghens; (14 April 1629 – 8 July 1695), was a Dutch physicist, mathematician, astronomer and inventor, who is widely regarded as one of the greatest")