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Mount Wilson Observatory, 100-inch Hooker Telescope

Location: Pasadena, CA, USA
Date: 1918
Creator(s): Pease, Francis G. , Hale, George Ellery
The increased light-grasp of this telescope made possible many notable advances in structural cosmology between 1924 and 1930, which have revised our ideas about the universe. One of these advances was that spiral nebulae are galactic units like our own; another was the idea of an expanding universe. George Ellery Hale began planning this project in 1906; Francis G. Pease was the chief designer and mechanical engineer. The telescope's mirror support and the use of mercury flotation to reduce the friction are among its outstanding mechanical engineering features.
Tags: Era: 1910-1919
Innovation designated by:
Courtesy Flickr/Bruce Irving (CC BY 2.0)
Mount Wilson Observatory, 100-inch Hooker Telescope
Pasadena, CA, USA

34.2249, -118.0566

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