Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.
The Allegheny Observatory
Photographer: Unknown
Taken: Circa 1913
Caption: The Allegheny Observatory's 30 inch Thaw Telescope
Additional Description: In the early 1910s, Brashear Optical Co. designed and built the 30 inch Thaw telescope for the Allegheny Observatory. Designed for photographic use, the telescope has collected more than 110,000 exposures and helped set the distance scale of the universe. Courtesy: Allegheny Observatory, Archives Service Center, University of Pittsburgh
Submitted: July 26, 2011, by Mike Wintermantel of Pittsburgh, Pennsylvania.
Database Locator Identification Number: p164149
File Size: 0.059 Megabytes

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