Swedish-ESO Submillimetre Telescope
| Swedish-ESO Submillimetre Telescope | |
|---|---|
Swedish-ESO Submillimetre Telescope |
|
| Organization | European Southern Observatory, Onsala Space Observatory |
| Location | La Silla Observatory, Chile |
| Coordinates | 29°15.67′S 70°43.88′W / 29.26117°S 70.73133°WCoordinates: 29°15.67′S 70°43.88′W / 29.26117°S 70.73133°W |
| Built | 1987 |
| Telescope style | single-dish parabolic reflector |
| Diameter | 15 m |
| Focal length | 4875 mm |
The Swedish-ESO Submillimetre Telescope (SEST) was a radio telescope of diameter 15 metres located at the La Silla Observatory in Chile. The telescope was built in 1987 as a combined project between ESO and Onsala Space Observatory, with contributions from Finland and Australia.[1] It was then the only large telescope for submillimetre astronomy in the southern hemisphere.[2] It was decommissioned in 2003.[3]
The telescope was used for single-dish observations of a wide range of astronomical objects, especially the Galactic centre and the Magellanic Clouds and for interferometric observations at millimetre wavelengths.[1]
In 1995 observations made with SEST showed that the Boomerang Nebula is the coldest known location in the universe, with a temperature lower than the background radiation.[4][5]
See also [edit]
References [edit]
- ^ a b "Swedish-ESO Submillimetre Telescope - SEST". Onsala Space Observatory. Retrieved 2012-07-27..
- ^ R. S. Booth, et al. "The Swedish-ESO Submillimetre Telescope". ESO. Retrieved 2012-07-27..
- ^ "Swedish-ESO 15m Submillimeter Telescope (SEST)". Retrieved 2012-07-27..
- ^ Cauchi, Stephen (February 21, 2003). "Coolest bow tie in the universe". The Sydney Morning Herald. Archived from the original on September 1, 2006. Retrieved February 2, 2007
- ^ Sahai, Raghvendra; Nyman, Lars-Åke (1997). "The Boomerang Nebula: The Coolest Region of the Universe?". The Astrophysical Journal 487 (2): L155–L159. Bibcode:1997ApJ...487L.155S. doi:10.1086/310897.
