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27 August 1999 Wide-angle straylight measurements of the XMM (x-ray multimirror mission) telescopes
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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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christian Wuehrer, Reinhard A. Birkl, P. DeZoeten, Albrecht Frey, Edgar Hoelzle, Wolfgang Ruehe, Daniel de Chambure, and Kees van Katwijk "Wide-angle straylight measurements of the XMM (x-ray multimirror mission) telescopes", Proc. SPIE 3737, Design and Engineering of Optical Systems II, (27 August 1999);

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