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Proceedings Paper

X-ray tests and calibrations of the ABRIXAS mirror systems
Author(s): Peter Friedrich; Heinrich W. Braeuninger; Wolfgang Burkert; Thorsten Doehring; Roland Egger; Gunther Hasinger; Andreas Oppitz; Peter Predehl; Joachim E. Truemper
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Paper Abstract

ABRIXAS is a German satellite project - to be launched in spring 1999 - which will perform the first imaging x-ray all-sky survey in the 0.5-10 keV band thus being a complement to the ROSAT all-sky which covered the 0.1-2.4 keV range. Its telescope consists of seven mirrors modules, each with a diameter of 16 cm and a focal length of 160 cm. the mirror modules are tested and calibrated at the MPE X- ray test facility PANTER. Several mirrors from the qualification program and one flight module have been tested and calibrated up to now. The imaging performance of the optics was successively improved until the flight module reached an on-axis resolution of 22 arcseconds. The total scattering level at 8 keV is about 16 percent for two reflections which indicates a microroughness of less than 0.5 nm. The measured on-axis effective area of one flight mirror module is 81 cm2 at 1.5 keV and 25 cm2 at 8 keV. These values indicate that the reflectivities of the mirror surface are on the average about 92 percent of the theoretical expectation.

Paper Details

Date Published: 19 November 1998
PDF: 11 pages
Proc. SPIE 3444, X-Ray Optics, Instruments, and Missions, (19 November 1998); doi: 10.1117/12.331252
Show Author Affiliations
Peter Friedrich, Astrophysikalisches Institut Potsdam (Germany)
Heinrich W. Braeuninger, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Wolfgang Burkert, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Thorsten Doehring, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Roland Egger, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Gunther Hasinger, Astrophysikalisches Institut Potsdam (Germany)
Andreas Oppitz, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Peter Predehl, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)
Joachim E. Truemper, Max-Planck-Institut fuer Extraterrestrische Physik (Germany)


Published in SPIE Proceedings Vol. 3444:
X-Ray Optics, Instruments, and Missions
Richard B. Hoover; Arthur B. C. Walker, Editor(s)

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