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2012 National Reconnaissance Office space telescope donation to NASA
The 2012 National Reconnaissance Office space telescope donation to NASA was the declassification and donation to NASA of two identical space telescopes by the United States National Reconnaissance Office. The donation has been described by scientists as a substantial improvement over NASA's current Hubble Space Telescope. Although the telescopes themselves are being given to NASA at no cost, the space agency must still pay for the cost of instruments and electronics for the telescopes, as well as the launch of the telescopes. Scientists plan to use one of the telescopes as the basis for an improved version of the proposed Wide Field Infrared Survey Telescope (WFIRST).
== Background ==
While the National Aeronautics and Space Administration (NASA)'s Hubble Space Telescope has collected a large amount of astrophysical data, has outlived all expectations, and has been described as one of the space agency's most successful missions, the instrument will soon succumb to the extreme environment of space. In addition, with the James Webb Space Telescope costing at least US$9 billion, the agency's astrophysics budget is extremely strained. As a result, NASA's other astrophysics missions have been delayed until funding becomes available.
In January 2011 the National Reconnaissance Office (NRO) revealed to NASA the existence of two unneeded telescopes, originally built as reconnaissance satellites, and available to the civilian agency. NASA accepted the offer in August 2011 and announced the donation on 4 June 2012, amazing scientists. The instruments were constructed between the late 1990s and early 2000s, reportedly for NRO's unsuccessful Future Imagery Architecture program; in addition to the two completed telescopes, a primary mirror and other parts for a third also exist.
While NRO considers them to be obsolete, the telescopes are nevertheless new and unused. All CCDs and electronics have been removed, however, and NASA must add them at its own expense. When the telescopes' specifications were presented to scientists, large portions were censored due to national security. An unnamed space analyst stated that the instruments may be a part of the KH-11 KENNAN line of satellites which have been launched since 1976, but which have now been largely superseded by newer telescopes with wider fields of view than the KH-11. The analyst stated, however, that the telescopes have "state-of-the art optics" despite their obsolescence for reconnaissance purposes.〔
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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