Heinrich Hertz Submillimeter Telescope

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Heinrich Hertz Submillimeter Telescope
SMT 1.png
Alternative names Submillimeter Telescope
Observatory Mount Graham International Observatory Edit this on Wikidata
Location(s) Mount Graham Edit this on Wikidata, United States of America Edit this on Wikidata
Coordinates 32°42′06″N 109°53′28″W / 32.701611°N 109.891244°W / 32.701611; -109.891244Coordinates: 32°42′06″N 109°53′28″W / 32.701611°N 109.891244°W / 32.701611; -109.891244
Organization Arizona Radio Observatory Edit this on Wikidata
Altitude 3,185 m (10,449 ft)
Telescope style radio telescope Edit this on Wikidata
Diameter 10 m (32 ft 10 in)[1]
Secondary diameter 0.69 m (2 ft 3 in)
Mass 44.76 t (44,760 kg) [1]
Focal length 3.5 m (11 ft) [1]
Mounting Altazimuth mount [1]
Website aro.as.arizona.edu
Heinrich Hertz Submillimeter Telescope is located in the US
Heinrich Hertz Submillimeter Telescope
Location of Heinrich Hertz Submillimeter Telescope

The Submillimeter Telescope (SMT), formerly known as the Heinrich Hertz Submillimeter Telescope, is a submillimeter wavelength radio telescope located on Mount Graham, Arizona. It is a 10-meter-wide parabolic dish inside a building to protect it from bad weather. The building front doors and roof are opened when the telescope is in use. The telescope's construction was finished in 1993. Along with the 12 Meter Telescope on Kitt Peak, this telescope is maintained by the Arizona Radio Observatory, a division of Steward Observatory at the University of Arizona.

The dryness of the air around and above Mt. Graham is particularly vital for EHF (extremely short wavelength radio) and far-infrared observations - a region of the spectrum where the electromagnetic waves are strongly attenuated by any water vapor or clouds in the air.

This telescope is used nine-to-ten months of the year, and it is stowed only when there is too much water vapor in the atmosphere, primarily during the summertime. This telescope is one of the telescopes that makes up Mount Graham International Observatory.


Other MGIO Facilities[edit]


  1. ^ a b c d "SMT Telescope - General Description". Retrieved 21 May 2017. 

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