C. P. de Vries,1 J. W. den Herder,1 E. Costantini,1 H. Aarts,1 P. Lowes,1 J. S. Kaastra,1 R. Kelley,2 K. Gendreau,2 Z. Arzoumanian,2 R. Koenecke,2 D. Haas,3 S. Paltani,3 K. Mitsuda,4 N. Y. Yamasaki4
1SRON Netherlands Institute for Space Research (Netherlands) 2NASA Goddard Space Flight Ctr. (United States) 3ISDC Data Ctr. for Astrophysics (Switzerland) 4Japan Aerospace Exploration Agency (Japan)
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The SXS instrument is the Soft X-ray micro-calorimeter Spectrometer planned for the Japanese ASTRO-H
satellite, scheduled to be launched in 2014. In this paper, the trade off and modelling for the X-ray absorption
and optical blocking filters will be described. The X-ray absorption filter will optimize the efficiency for high
spectral resolution observations for bright sources at higher energies (notably around the Fe-K line at 6.4 KeV),
given the characteristics of the instrument while the optical blocking filter allows X-ray observations of optically
bright sources. For this mission a novel type of on-off-switchable X-ray calibration source, using light sensitive
photo-cathodes, is being developed, which will be used for gain calibration and contamination monitoring. These
sources will be used by both the SXS and SXI (Soft X-ray Imager) instruments and have the capability to be
pulsed at millisecond intervals. Details of these sources will also be discussed.
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C. P. de Vries, J. W. den Herder, E. Costantini, H. Aarts, P. Lowes, J. S. Kaastra, R. Kelley, K. Gendreau, Z. Arzoumanian, R. Koenecke, D. Haas, S. Paltani, K. Mitsuda, N. Y. Yamasaki, "Filters and calibration sources for the soft x-ray spectrometer (SXS) instrument on ASTRO-H," Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 773213 (29 July 2010); https://doi.org/10.1117/12.855880