DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY
Kitt Peak Observatory. Some of the telescope domes at the Kitt Peak Observatory in Arizona, USA. The large dome at centre holds the Mayall 4-metre telescope, the largest optical telescope at Kitt Peak. The summit of Kitt Peak is 2062 metres above sea level. Observatories are built at high altitudes to prevent distortion to incoming light from atmospheric interference. The site was chosen for an observatory in 1958, and in 1998 it has 14 research telescopes in operation. The site forms part of the National Optical Astronomical Observatories (NOAO).
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