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Yerkes Observatory, Spiral Stairs
USA
Yerkes Observatory is the home of the largest refractor ever built: the objective lens is 40 inches in diameter and the telescope tube is over 60 feet long. The mount was made by Warner & Swasey in Cleveland and the optics were ground by the Alvan Clark Company. The observatory building (designed by Henry Ives Cobb) and telescope are outstanding examples of late 19th-century architecture and technical achievement. I’d like to thank Richard Dreiser of the Yerkes staff for his help with this project.
Copyright: David mariotti
Type: Spherical
Resolution: 13912x6956
Uploaded: 22/04/2014
Updated: 30/04/2014
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Tags: yerkes observatory; observatories; telescopes
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