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Yerkes Observatory, Williams Bay, Wisconsin, USA, 1915.

Warner & Swasey Company

Yerkes Observatory, Williams Bay, Wisconsin, USA, 1915.
3 6 c m
actual image size: 32cm x 28cm


Photograph of the domes and buildings of the Yerkes Observatory at Williams Bay, Wisconsin in the United States. Its primary instrument is a 40 inch refracting telescope built by the American company of Warner & Swasey Ltd with optics by Alvan Clark & Sons that was completed in 1897. Established as part of the University of Chicago, the observatory was the brainchild of its first director, George Ellery Hale (1868-1938). He managed to convince Charles Tyson Yerkes (1837-1905), a Chicago railway tycoon, to fund the whole project. Today it is still the largest refracting telescope in the world.

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© Science Museum / Science & Society Picture Library

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