The 'equatorial coude' refracting telescope, Paris Observatory, France - aperture The tube is 'bent' and light fed to the observer by two mirrors, one in front of the telescope and the other at the 'elbow'. Engraving from 'A Handbook of Descriptive Astronomy' by George F Chambers (Oxford, 1890).

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The 'equatorial coude' refracting telescope, Paris Observatory, France - aperture The tube is 'bent' and light fed to the observer by two mirrors, one in front of the telescope and the other at the 'elbow'. Engraving from 'A Handbook of Descriptive Astronomy' by George F Chambers (Oxford, 1890).

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

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