Otto Struve Telescope

Otto Struve Telescope
The Otto Struve Telescope
Alternative names2.1m-Otto Struve Telescope Edit this at Wikidata
Part ofMcDonald Observatory Edit this on Wikidata
Location(s)Jeff Davis County, Texas
Coordinates30°40′47″N 104°01′29″W / 30.679709°N 104.024823°W / 30.679709; -104.024823 Edit this at Wikidata
Built1933–1939 (1933–1939) Edit this at Wikidata
DiscoveredNereid
Telescope styleoptical telescope Edit this on Wikidata
Diameter82 in (2.1 m) Edit this at Wikidata
Websitemcdonaldobservatory.org/research/telescopes/Struve Edit this at Wikidata
Otto Struve Telescope is located in the United States
Otto Struve Telescope
Location of Otto Struve Telescope
  Related media on Commons
The telescope's dome

The Otto Struve Telescope was the first major telescope to be built at McDonald Observatory. Located in the Davis Mountains in West Texas, the Otto Struve Telescope was designed by Warner & Swasey Company and constructed between 1933 and 1939 by the Paterson-Leitch Company. Its 82-inch (2.1 m) mirror was the second largest in the world at the time.[note 1] It was named after the Ukrainian-American astronomer of Baltic German origin Otto Struve in 1966, three years after his death; Struve had been the director of McDonald Observatory from 1932–1950.

The Davis Mountains is an excellent location for astronomical research because of the clear dry air and moderately high elevation. The remote nature of the facility proved to be a significant challenge in transporting such a large mirror. It was a very precarious journey for the Otto Struve Telescope's mirror to this remote part of Texas and up to the top of Mount Locke. The mirror was transported from the local town of Fort Davis up the mountain by Carleton D. Wilson, owner of a local trucking company, while locals cheered as they looked on.[1]

The Otto Struve telescope is still in use today. It is updated with modern imaging detectors allowing astronomers to conduct many types of research.


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  1. ^ The Film & Video Archive of the McDonald Observatory. "Telescope Mirror and Dedication Rodeo (1939)". Texas Archive of the Moving Image.