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Proceedings Paper

Performance Of The Position Sensitive Proportional Counter Of The ROSAT Telescope
Author(s): E. Pfeffermann; U. G. Briel
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Paper Abstract

A multiwire proportional counter as the prime focal instrument of the ROSAT X-ray telescope has been developed and built. It has a sensitive area of 80 mm diameter (corresponding to a FOV of 2 Deg.) and is designed for an X-ray energy range from 0.1 to 2.0 keV. The energy resolution for 0.93 keV is 45% (FWHM), averaged over the entire sensitive area. Local deviations of the gas gain from the mean value are as small as 3%. For X-ray energies at 0.28 and 0.93 keV, the mean position resolution is 0.4 and 0.25 mm (FWHM), respectively. Deviations of measured pinhole positions from their nominal positions are less than 0.02 mm (for 0.93 keV). Using different methods of background rejection, a rejection efficiency of better than 99% is achieved.

Paper Details

Date Published: 14 July 1986
PDF: 5 pages
Proc. SPIE 0597, X-Ray Instrumentation in Astronomy, (14 July 1986); doi: 10.1117/12.966582
Show Author Affiliations
E. Pfeffermann, Institut fur extraterrestrische Physik (Germany)
U. G. Briel, Institut fur extraterrestrische Physik (Germany)


Published in SPIE Proceedings Vol. 0597:
X-Ray Instrumentation in Astronomy
J. Leonard Culhane, Editor(s)

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