Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992itns...39..976p&link_type=abstract
IEEE Transactions on Nuclear Science (ISSN 0018-9499), vol. 39, no. 4, p. 976-980.
Astronomy and Astrophysics
Astronomy
4
Flight Tests, Proportional Counters, Radiation Detectors, Rosat Mission, Spacecraft Instruments, Focal Plane Devices, Solar Flares, Spaceborne Astronomy, Spaceborne Telescopes, Supernova Remnants, X Ray Astronomy, X Ray Imagery
Scientific paper
Two redundant position sensitive proportional counters (PSPC) operating in the energy range from 0.1 to 2.4 keV are the prime focal plane instruments on board the X-ray astronomy satellite ROSAT. ROSAT was launched on the 1 of June 1990 and operates since highly efficient. We will report about the in orbit performance of the PSPC. Apart from its good energy and position resolution the detector has a very high charged particle background rejection efficiency of 99.8 percent. The gas gain of the detector is very stable. Short time variations due to thermal variations over one orbit are less than 1 percent. The long term drift over one month is 0.5 percent.
Briel Ulrich G.
Pfeffermann Elmar
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