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It was first conceived in the late 1960s, when the Anglo-Australian Observatory was being designed. The British astronomical community saw the need for telescopes of comparable power in the Northern Hemisphere. Planning began in 1974, but by 1979 the project was on the verge of being scrapped due to a ballooning budget. A re-design cut the price-tage substantially, and Dutch astronomers took a 20% stake in the project, allowing the project to be given the go-ahead in 1981. That year was the 200th anniverary of the discovery of Uranus by William Herschel, and it was decided to name the telescope in his honour.
Construction began in 1983, and the telescope was shipped to La Palma in 19851985 is a common year starting on Tuesday. Events January events January 1 Creation of the Internet's Domain Name System. January 17 British Telecom annouces they are going to abolish the famous red telephone boxes. January 23 A debate in the House of Lor. It saw first lightThe first light is the moment when a telescope is first used to take an astronomical image after its construction. Sometimes the term refers to the first image of a new instrument. In amateur astronomy first light refers to the first use of the telescope in 19871987 is a common year starting on Thursday. Events January January 1 Nunavut's capital changes it name to Iqaluit from Frobisher Bay. January 3 Aretha Franklin becomes the first woman inducted into the Rock and Roll Hall of Fame. January 4 An Amtrak train. The telescope has an altazimuth mountAn Altazimuth or alt-azimuth mount is a simple mount used for moving a telescope or camera along two perpendicular axes of motion. The vertical movement is known as the altitude while the horizontal motion is called the azimuth''. Altazimuth mounts are us. The mirror is maintained so that its theoretical maximum resolutionResolving power is the ability of a microscope or telescope to measure the angular separation of images that are close together. Angular resolution describes the resolving power of a telescope. Resolution is the minimum distance between distinguishable ob is less than 0.2 arcsecondA second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 ≈ 7. 7E-7 of a circle. It is the angular diameter on object of 1 unit diameter at a distance of 360s. The typical seeingThe word seeing can mean more than one thing: In common usage, the word means visual perception In astronomy, seeing is a technical term related to the clarity of the atmosphere. at La Palma is of the order of one arcsecond, so the telescope is limited by that.
As one of the best telescopes in the world, the WHT is heavily over-subscribed, and typically three times more applications for telescope time are received than can be accommodated. Notable discoveries made using the WHT include that of a hot bubble of expanding gas at the centre of the galaxyThis article is about a celestial body. For alternate meanings see galaxy (disambiguation). Spiral Galaxy ESO 269-57 is about 150 million light-years away and 200,000 light-years across. Stars are almost always found in collections called galaxies togethe, suggestive of the presence of a supermassive black hole; the first observation of the optical counterpart of a gamma-ray burst; and recently, the discovery of a Wolf-Rayet star with the fastest-known stellar wind.