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Proceedings Paper

Stray light baffling and environmental qualification of silicon pore optics
Author(s): Eric Wille; Marcos Bavdaz; Sebastiaan Fransen; Maximilien Collon; Marcelo Ackermann; Ramses Guenther; Giuseppe Vacanti; Coen van Baren; Jeroen Haneveld; Mark Olde Riekerink; Arenda Koelewijn; Dirk Kampf; Karl-Heinz Zuknik; Arnd Reutlinger
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Paper Abstract

Silicon Pore Optics (SPO) provide a high angular resolution with a low areal density as required for future X-ray telescopes for high energy astrophysics. We present progress in two areas of ESA’s SPO development activities: Stray light baffling and environmental qualification.

Residual stray light originating from off-axis sources or the sky background can be blocked by placing suitable baffles in front of the mirror modules. We developed two different mechanical implementations. The first uses longer, tapered mirror plates which improve the stray light rejection without the need of mounting additional parts to the modules or the telescope. The second method is based on placing a sieve plate in front of the optics. We compare both methods in terms of baffling performance using ray-tracing simulations and present test results of prototype mirror modules.

Any optics for space telescopes needs to be compliant with the harsh conditions of the launch and in-orbit operation. We present new work in improving the mechanical and thermal ruggedness of SPO mirror modules and show recent results of qualification level tests, including tests of modules with externally mounted sieve plate baffles.

Paper Details

Date Published: 26 September 2013
PDF: 7 pages
Proc. SPIE 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI, 88611E (26 September 2013); doi: 10.1117/12.2024064
Show Author Affiliations
Eric Wille, European Space Agency, ESTEC (Netherlands)
Marcos Bavdaz, European Space Agency, ESTEC (Netherlands)
Sebastiaan Fransen, European Space Agency, ESTEC (Netherlands)
Maximilien Collon, cosine Research B.V. (Netherlands)
Marcelo Ackermann, cosine Research B.V. (Netherlands)
Ramses Guenther, cosine Research B.V. (Netherlands)
Giuseppe Vacanti, cosine Science and Computing B.V. (Netherlands)
Coen van Baren, SRON Netherlands Institute for Space Research (Netherlands)
Jeroen Haneveld, Micronit Microfluidics B.V. (Netherlands)
Mark Olde Riekerink, Micronit Microfluidics B.V. (Netherlands)
Arenda Koelewijn, Micronit Microfluidics B.V. (Netherlands)
Dirk Kampf, Kayser-Threde GmbH (Germany)
Karl-Heinz Zuknik, Kayser-Threde GmbH (Germany)
Arnd Reutlinger, Kayser-Threde GmbH (Germany)

Published in SPIE Proceedings Vol. 8861:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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