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Peter Harrison Planetarium
The Peter Harrison Planetarium is a 120-seat digital laser planetarium, situated in Greenwich Park, London and is part of the National Maritime Museum. It opened on May 25, 2007.〔
The planetarium uses Digistar 3 software with blue, red and green lasers and grating light valve (GLV) technology to create a 4,000 pixel strip. This strip is swept to produce a 5,000 by 4,000 pixel image, refreshed 60 times per second. The image is projected through a fisheye lens onto the dome of the planetarium.
Ths planetarium is housed inside a 45-ton bronze-clad truncated cone, tilted at 51.5o to the horizontal (the latitude of Greenwich), and stands parallel to (but 50 metres east of) the prime meridian.〔(''Reopening of the new Royal Observatory, Greenwich'' ); National Maritime Museum press release; May 2007〕 It was conceived under the then Director, Roy Clare CBE, as the centrepiece of the "Time and Space" project, a £17.7m re-development of the Royal Observatory, Greenwich, and funded with a £3.25m grant from the Peter Harrison Foundation.〔(''£3m pledge by Peter Harrison Foundation secures re-development of Royal Observatory, Greenwich'' ); National Maritime Museum press release; November 2005〕
==See also==
*London Planetarium
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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