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| Description | The JCMT is the largest single-dish telescope in the world designed specifically to operate in the submillimetre region of the spectrum (450μm–1mm). The primary reflector of the JCMT has a diameter of 15m and its figure is maintained at an accuracy of just 22μm rms through a programme of periodic holography and panel adjustment. The facility is situated at the summit of Mauna Kea, on the island of Hawaii, at an altitude of 4092m. This is one of the best sites in the world for submillimetre astronomy, and certainly the very best in the northern hemisphere. Two categories of instrument are provided for users of the facility. (a) Heterodyne receivers are available in a number of atmospheric transmission windows to measure line emission from specific molecules, revealing physical information about the source being observed (composition, temperature and velocity). (b) A new continuum camera called SCUBA-2 is being commissioned during 2010/11 and will offer simultaneous high-fidelity imaging at 450μm and 850μm. The JCMT is a joint project of the United Kingdom (55%), Canada (25%) and the Netherlands (20%). The managing agency is the UK Science and Technology Facilities Council (STFC). |
| URL | http://www.jach.hawaii.edu/ |
| Status | Operational since 1987 |
| Scientific Domains | Physical Sciences and Engineering |
| RI Categorization | Telescopes |
| Location | North Star Avenue, Swindon, SN2 1SZ, United Kingdom |
| MERIL URL | http://portal.meril.eu/meril/view/facilitys/15520 |
