Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2518..120b&link_type=abstract
Proc. SPIE Vol. 2518, p. 120-131, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, Oswald H. Siegmund; John V. Valler
Astronomy and Astrophysics
Astronomy
8
Scientific paper
The prime focal instrument of the x-ray astronomy satellite ROSAT is the position sensitive proportional counter (PSPC). It is a conventional multiwire gas counter for the energy range from 0.1 to 2.4 keV. At a photon energy of 1 keV the PSPC has an energy resolution of 41% (FWHM), a position resolution of 230 micrometer and a quantum efficiency of 50%. With its very high charged particle background rejection efficiency of better than 99% the detector is best suited for deep exposures to reach so far unprecedented low x-ray flux limits, and also for imaging of extended low surface brightness objects. We describe the detector, report on its in- orbit performance, and present some highlights of the ROSAT all-sky survey and from pointed PSPC observations.
Briel Ulrich G.
Pfeffermann Elmar
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