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The SPEKTROSAT Mission

Published online by Cambridge University Press:  12 April 2016

Peter Predehl
Peter Predehl*
Affiliation:
Max-Planck-Institut für Physik und Astrophysik Institut für Extraterrestrische Physik 8046 Garching, FRG

Abstract

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High resolution spectroscopy will be an important diagnostic tool in future X-ray astronomy. SPEKTROSAT, the follow-up mission to ROSAT will be equipped with a transmission grating spectrometer with a spectral resolution of 0.2 Å over the wavelength range between 6 Å and 300 Å. Third order aberations are minimized by a mounting of the grating elements according to the Rowland-torus geometry. The ROSAT mirror system will be slightly changed by a redesign of the optical stops in order to reduce the field of view. The Focal Instrumentation has to be modified for a better match with the spectroscopic requirements. Since SPEKTROSAT is almost identical to ROSAT, this concept offers a large amount of science at relatively low costs. Its limiting line sensitivity will be about 20 times better than that of the EINSTEIN-OGS.

Type
8. Future X-ray Observatories
Information
International Astronomical Union Colloquium , Volume 115: High Resolution X-ray Spectroscopy of Cosmic Plasmas , 1990 , pp. 295 - 301
Copyright
Copyright © Cambridge University Press 1990

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