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Granat

A Dictionary of Astronomy | 1997 | 419 words | Copyright

Granat A Soviet satellite for X-ray and gamma-ray astronomy, launched in 1989December. It carried seven X-ray and gamma-ray instruments. The ART-S and ART-P high-pressure proportional counters cover the energy range 3–150 keV. The French Sigma coded-mask telescope operates in the energy range 30–1300 keV. Denmark provided the WATCH all-sky monitor. Granat ceased operation in 1998November.

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