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Proceedings Paper

ROSAT position-sensitive proportional counter and its in-orbit performance
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Paper Abstract

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.

Paper Details

Date Published: 1 September 1995
PDF: 12 pages
Proc. SPIE 2518, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, (1 September 1995); doi: 10.1117/12.218371
Show Author Affiliations
Ulrich G. Briel, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Elmar Pfeffermann, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)


Published in SPIE Proceedings Vol. 2518:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI
Oswald H. W. Siegmund; John V. Vallerga, Editor(s)

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