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| spacecraft_bus = LEOStar-2 | manufacturer = Orbital Sciences ATK Space Components | launch_mass = | payload_mass = 〔 | dimensions = 〔 | power = 729-750 W〔〔(【引用サイトリンク】title=NuSTAR (Nuclear Spectroscopic Telescope Array) )〕 | launch_date = | launch_rocket = Pegasus XL | launch_site = ''Stargazer'' Kwajalein Atoll, Marshall Islands | launch_contractor = Orbital Sciences | disposal_type = | deactivated = | destroyed = | last_contact = | orbit_epoch = 2 July 2015, 10:33:21 UTC | orbit_reference = Geocentric | orbit_regime = Near-equatorial | orbit_semimajor = 〔 | orbit_eccentricity = 0.0011710〔 | orbit_periapsis = 〔 | orbit_apoapsis = 〔 | orbit_inclination = 6.026 degrees〔 | orbit_period = 96.9 minutes〔 | orbit_RAAN = 109.6584 degrees〔 | orbit_arg_periapsis = 54.0003 degrees〔 | orbit_mean_anomaly = 306.1211 degrees〔 | orbit_mean_motion = 14.86610459 rev/day〔 | orbit_rev_number = 16551〔 | apsis = gee | telescope_type = Wolter type I | telescope_diameter = | telescope_focal_length= 〔 | telescope_area = 9 keV: 78 keV: | telescope_wavelength = 3–79 keV〔 | telescope_resolution = 9.5 arcsec〔 | instruments = Dual X-ray telescope | programme = Small Explorer program | previous_mission = IBEX | next_mission = IRIS }} NuSTAR (Nuclear Spectroscopic Telescope Array) is a space-based X-ray telescope that uses a conical approximation to a Wolter telescope to focus high energy X-rays from astrophysical sources, especially for nuclear spectroscopy, and operates in the range of 3 to 79 keV.〔(About NuSTAR: The Nuclear Spectroscopic Telescope Array )〕 It is the eleventh mission of the NASA Small Explorer satellite program (SMEX-11) and the first space-based direct-imaging X-ray telescope at energies beyond those of the Chandra X-ray Observatory and XMM-Newton. It was successfully launched on 13 June 2012, having previously been delayed from 21 March due to software issues with the launch vehicle.〔(Launch of NASA's NuSTAR Mission Postponed )〕 Its primary scientific goals are to conduct a deep survey for black holes a billion times more massive than the Sun, to investigate how particles are accelerated to very high energy in active galaxies, and to understand how the elements are created in the explosions of massive stars by imaging the remains, which are called supernova remnants. After its primary mission of 2 years (to 2014) it is now in a 2 year mission extension to 2016.〔(NuSTAR Celebrates Two Years of Science in Space )〕 ==History== NuSTAR's predecessor, the High Energy Focusing Telescope (HEFT), was a balloon-borne version that carried telescopes and detectors constructed using similar technologies. In February 2003, NASA issued an Explorer Program Announcement of Opportunity. In response, NuSTAR was submitted to NASA in May, as one of 36 mission proposals vying to be the tenth and eleventh Small Explorer missions. In November, NASA selected NuSTAR and four other proposals for a five-month implementation feasibility study. In January 2005, NASA selected NuSTAR for flight pending a one-year feasibility study. The program was cancelled in February 2006 as a result of cuts to science in NASA's 2007 budget. On 21 September 2007 it was announced that the program had been restarted, with an expected launch in August 2011, though this was later delayed to June 2012.〔 The principal investigator is Fiona A. Harrison of the California Institute of Technology (Caltech). Other major partners include the Jet Propulsion Laboratory (JPL), University of California at Berkeley, Technical University of Denmark (DTU), Columbia University, Goddard Space Flight Center, Stanford University, University of California, Santa Cruz, Sonoma State University, Lawrence Livermore National Laboratory, and the Italian Space Agency (ASI). NuSTAR's major industrial partners include Orbital Sciences Corporation and ATK Space Components. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「NuSTAR」の詳細全文を読む スポンサード リンク
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