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Ancient Chinese sextant.

Ancient Chinese sextant.

C034/4746

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Credit

MARK WILLIAMSON / SCIENCE PHOTO LIBRARY MARK WILLIAMSON / SCIENCE PHOTO LIBRARY

Caption

One of several historical Chinese astronomical instruments on the roof of the Beijing Ancient Observatory in Beijing, China, an astronomical observatory that dates from the 1400s. The sextant (1673) was designed to measure angular distance between any two stars less than 60 degrees apart, as well as angular diameters of the sun and moon.

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Model release not required. Property release not required.

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