Spectrum-X-Gamma
Encyclopedia
Spektr-RG is an international high-energy astrophysics
High-energy astronomy
High energy astronomy is the study of astronomical objects that release EM radiation of highly energetic wavelengths. It includes X-ray astronomy, gamma-ray astronomy, and extreme UV astronomy, as well as studies of neutrinos and cosmic rays...

 observatory, which is being built under the leadership of the Russian Space Research Institute
Russian Space Research Institute
The Russian Space Research Institute is the leading organization of the Russian Academy of Sciences on space exploration to benefit fundamental science....

 (IKI). Spektr-RG instrumentation includes 5 telescopes spanning the energy range
Electromagnetic spectrum
The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. The "electromagnetic spectrum" of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object....

 from the far ultraviolet
Ultraviolet
Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than X-rays, in the range 10 nm to 400 nm, and energies from 3 eV to 124 eV...

 to the hard X-ray
X-ray
X-radiation is a form of electromagnetic radiation. X-rays have a wavelength in the range of 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz and energies in the range 120 eV to 120 keV. They are shorter in wavelength than UV rays and longer than gamma...

, plus an all-sky monitor.

Development of an early version with the same name was canceled in 2002.

Early Spektr-RG

Development of an early version of Spektr-RG was started in mid-'90s
1990s
File:1990s decade montage.png|From left, clockwise: The Hubble Space Telescope floats in space after it was taken up in 1990; American F-16s and F-15s fly over burning oil fields and the USA Lexie in Operation Desert Storm, also known as the 1991 Gulf War; The signing of the Oslo Accords on...

 and was finally canceled in 2002. Initial launch date was set to 1995, but later postponed as far as 2008, until it was finally cancelled in 2002. However, some of the instruments have been completed, e.g., an X-ray telescope
X-ray telescope
An X-ray telescope is a telescope that is designed to observe remote objects in the X-ray spectrum. In order to get above the Earth's atmosphere, which is opaque to X-rays, X-ray telescopes must be mounted on high altitude rockets or artificial satellites.-Optical design:X-ray telescopes can use...

 by Leicester University (JET-X) and an ultraviolet telescope by Tel-Aviv University (TAUVEX
TAUVEX
The Tel Aviv University Ultraviolet Explorer, or TAUVEX, is a space telescope array designed and constructed in Israel for Tel Aviv University by El-Op, Electro-Optical Industries, Ltd. acting as Prime Contractor, for the exploration of the ultraviolet sky...

).

Current Spektr-RG

The successor of the early Spektr-RG was initiated in 2005 and is currently in development and scheduled for launch in Q1 2013. The observatory is intended to study interplanetary magnetic field, galaxies, black holes.

External links

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