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Proceedings Paper

Wide-angle straylight measurements of the XMM (x-ray multimirror mission) telescopes
Author(s): Christian Wuehrer; Reinhard A. Birkl; P. DeZoeten; Albrecht Frey; Edgar Hoelzle; Wolfgang Ruehe; Daniel de Chambure; Kees van Katwijk
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Paper Abstract

The high throughput x-ray spectroscopy mission XMM is the second 'Cornerstone' project in the ESA long term Programme for Space Science. This observatory has at its heart three heavily nested Wolter I grazing incidence x-ray telescope. The telescopes are equipped with non-dispersive spectroscopic imaging instruments and medium resolution dispersive spectroscopic instruments. Because of the sensitivity of the XMM instruments x-ray detectors in the visible wavelength range, a high suppression of the visible radiation emitted from out-of-field sources must be ensured. The straylight reduction capability is quantified by the PST. The experimental verification of the PST on the XMM flight model mirror modules for off-axis angles between 1 degree and 85 degrees is presented in this paper. For the first time a straylight test of a compete telescope was performed in air measuring the telescope PST over a range of 9 orders of magnitude.

Paper Details

Date Published: 27 August 1999
PDF: 9 pages
Proc. SPIE 3737, Design and Engineering of Optical Systems II, (27 August 1999); doi: 10.1117/12.360059
Show Author Affiliations
Christian Wuehrer, Dornier Satellitensysteme GmbH (Germany)
Reinhard A. Birkl, Dornier Satellitensysteme GmbH (Germany)
P. DeZoeten, Dornier Satellitensysteme GmbH (Germany)
Albrecht Frey, Dornier Satellitensysteme GmbH (Germany)
Edgar Hoelzle, Dornier Satellitensysteme GmbH (Germany)
Wolfgang Ruehe, Dornier Satellitensysteme GmbH (Germany)
Daniel de Chambure, European Space Agency/ESTEC (Netherlands)
Kees van Katwijk, European Space Agency/ESTEC (Netherlands)

Published in SPIE Proceedings Vol. 3737:
Design and Engineering of Optical Systems II
Fritz Merkle, Editor(s)

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