X-RAY SATELLITES SATELLITES & SPACE PROBES A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z           HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site Exosat An ESA (European Space Agency) satellite for X-ray astronomy that carried out observations of variable X-ray sources in the energy range 0.05-20 keV (corresponding to wavelengths of 0.025-1.24 nanometers). On board were three instruments: an imaging telescope, a proportional counter, and a gas scintillation proportional counter array. Exosat made 1,780 observations of a wide variety of objects, including active galactic nuclei, stellar coronae, cataclysmic variables, white dwarfs, X-ray binaries, clusters of galaxies, and supernova remnants. It stopped operating aftter three years, on Apr. 9, 1986. Launch date May 26, 1983 Launch vehicle Delta 3914 Launch site Vandenberg Air Force Base Orbit 340 × 191,878 km × 72.5° Mass 510 kg Related entry    • X-ray satellites Related category    • SATELLITES AND SPACE PROBES Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP