|
Spektr-R (or RadioAstron) is a Russian scientific satellite with a radio telescope on board. It was launched on 18 July 2011, by Zenit-3F launcher, from Baikonur Cosmodrome to perform research on the structure and dynamics of radio sources within and beyond our galaxy. Together with some of the largest ground-based radio telescopes, this telescope forms interferometric baselines extending up to . == Overview == The Spektr-R project is funded by the Astro Space Center of Russia, and was launched into Earth orbit on 18 July 2011,〔 with a perigee of and an apogee of , about 700 times the orbital height of the Hubble Space Telescope. In comparison, the average distance from Earth to the Moon is . The main scientific goal of the mission is the study of astronomical objects with an angular resolution up to a few millionths of an arcsecond. This is accomplished by using the satellite in conjunction with ground-based observatories and interferometry techniques.〔 Another purpose of the project was to develop an understanding of fundamental issues of astrophysics and cosmology. This included star formations, the structure of galaxies, interstellar space, black holes and dark matter. Spektr-R is one of the instruments in the RadioAstron program, an international network of observatories led by the Astro Space Center of the Lebedev Physical Institute.〔 The telescope is intended for radio-astrophysical observations of extragalactic objects with ultra-high resolution, as well as researching of characteristics of near-Earth and interplanetary plasma. The very high angular resolving power will be achieved when used in conjunction with a ground-based system of radio-telescopes and interferometrical methods, operating at wavelengths of 1.35–6.0, 18.0 and 92.0 cm.〔(【引用サイトリンク】title=RadioAstron )〕 Once in space, the flower-like main dish was to open its 27 'petals' within 30 minutes. At launch the mass of the spacecraft was . It was launched from the Baikonur Cosmodrome on 18 July 2011 at 02:31 UTC by a Zenit-3F launch vehicle, which is composed of a Zenit-2M with a Fregat-SB upper stage.〔〔 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「Spektr-R」の詳細全文を読む スポンサード リンク
|