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Proceedings Paper

The development of the µROSI x-ray telescope
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Paper Abstract

The μROSI (Micro Roentgen Satellite Instrument) miniature X-ray telescope is the first X-ray telescope specifically designed for an amateur micro satellite. Its mission is to perform an all-sky survey in the soft X-ray band on board the Italian satellite Max-Valier. Due to the limitations imposed by the small size of the spacecraft, the instrument features a silicon drift detector (SDD) with very low power consumption and a focusing optics that consists of 12 nested mirror shells. With a field of view of 1°, μROSI will perform an all-sky survey flying in sun-synchronous orbit (SSO). As a secondary mission objective, the telescope will observe the Earth's upper atmosphere during the all-sky survey, potentially detecting the O2 absorption line. This paper describes the overall telescope design and gives an overview of the key components of the telescope: the mirror subsystem and the detector subsystem. All subsystems have been tested with flight-like engineering models. The results of these tests are presented in this paper. The silicon drift detector (SDD) of the μROSI telescope has been tested with a breadboard electronics and the engineering model of the electronics is currently being manufactured. The breadboard test proved that the SDD together with the specifically developed electronics is capable of measuring high resolution spectra in the soft X-ray bandwidth. One demonstrator mirror shell has been produced and tested in the PANTER X-ray test facility to verify the X-ray properties. The measurements suggest that the final μROSI mirror system fulfills all requirements for conducting its mission successfully.

Paper Details

Date Published: 26 September 2013
PDF: 14 pages
Proc. SPIE 8859, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII, 885905 (26 September 2013); doi: 10.1117/12.2023973
Show Author Affiliations
Lars Tiedemann, Max-Planck-Institut für extraterrestrische Physik (Germany)
Institut für Raumfahrtsysteme, Univ. Stuttgart (Germany)
Elias Breunig, Max-Planck-Institut für extraterrestrische Physik (Germany)
Vadim Burwitz, Max-Planck-Institut für Extraterrestrische Physik (Germany)
Maria Fürmetz, Max-Planck-Institut für extraterrestrische Physik (Germany)
Gisela Hartner, Max-Planck-Institut für Extraterrestrische Physik (Germany)
Walter Kink, Max-Planck-Institut für extraterrestrische Physik (Germany)
Benedikt Menz, Max-Planck-Institut für extraterrestrische Physik (Germany)
Peter Predehl, Max-Planck-Institut für extraterrestrische Physik (Germany)
Hans-Peter Röser, Institut für Raumfahrtsysteme, Univ. Stuttgart (Germany)
Martin Schlecker, Max-Planck-Institut für extraterrestrische Physik (Germany)
Giuseppe Valsecchi, Media Lario Technologies S.r.l. (Italy)

Published in SPIE Proceedings Vol. 8859:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVIII
Oswald H. Siegmund, Editor(s)

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