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Reflecting Telescope, 19th Century

Reflecting Telescope, 19th Century

C039/1436

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Credit

SCIENCE SOURCE / SCIENCE PHOTO LIBRARY SCIENCE SOURCE / SCIENCE PHOTO LIBRARY

Caption

A reflecting telescope is an optical telescope invented in the 17th century which uses a single or combination of curved mirrors that reflect light and form an image, as an alternative to the refracting telescope which, at that time, suffered from severe chromatic aberration. Reflecting telescopes may employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. Despite the theoretical advantages of the reflector design, the difficulty of construction and the poor performance of the speculum metal mirrors being used at the time meant it took over 100 years for them to become popular.

Release details

Model release not required. Property release not required.

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