Granat

Granat (in Russian: Гранат) was a Satellite of detection of the gamma rays soviéto-Russian, is born from the co-operation between Russia and the Soviet Union. The 5 tons of the satellite were launched on December 1st, 1989 20:20 GMT with a launcher Proton - K/D-1 since Baïkonour. its orbit is very ecliptic (2.000 × 200.000 km × 51.6°). Its revolution lasted four days.

The satellite worked quickly during 10 years, between 1989 and 1999, until 1994. Granat Carried four instruments. There was the French telescope " Sigma " (System of Imagery Gamma to Random Mask), the Russian telescope " Art-p " , the monitor " Watch " and the detector of gamma ray " Phebus ".

During 4 years " Granat" , examined many galaxies and the detectable gamma rays outside our galaxy. After that, it was used for additional examinations of other objects.

external bonds

  • on the site of NASA
  • telescope Sigma

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