Christiaan Huygens's design of a telescope without tube. Astroscopia... | Download Scientific Diagram
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
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Incomplete aerial telescope, 1686-1691 | Science Museum Group Collection
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The mystery of Christiaan Huygens' flawed telescopes may have been solved
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Huygenskijker Oude Sterrewacht Leiden
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Tubeless telescope described by Huygens, 17th century - Stock Image - C048/5297 - Science Photo Library