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Swedish-ESO Submillimetre Telescope : ウィキペディア英語版 | Swedish-ESO Submillimetre Telescope
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.〔(【引用サイトリンク】 title=Swedish-ESO Submillimetre Telescope - SEST )〕 It was then the only large telescope for submillimetre astronomy in the southern hemisphere. It was decommissioned in 2003.〔(【引用サイトリンク】 title=Swedish-ESO 15m Submillimeter Telescope (SEST) )〕 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.〔 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. ==Galery==
File:Dizzying Star Trails over SEST.jpg|Sky filled with star trails, a result of the camera's long exposure time. File:Observatoire de la Silla - Swedish-ESO Submillimetre Telescope.JPG| SEST with the ESO 3.6 m Telescope in the background
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