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Proceedings Article

PST measurements and wide-angle straylight analyses of the XMM (X-Ray Multi Mirror) telescopes

[+] Author Affiliations
Christian Wuehrer, Reinhard A. Birkl, Peter de Zoeten, Albrecht Frey, Edgar Hoelzle, Wolfgang Ruehe

Dornier Satellitensysteme GmbH (Germany)

Daniel de Chambure, Kees van Katwijk

European Space Agency/ESTEC (Netherlands)

Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, 113 (July 18, 2000); doi:10.1117/12.391547
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From Conference Volume 4012

  • X-Ray Optics, Instruments, and Missions III
  • Joachim E. Truemper; Bernd Aschenbach
  • Munich, Germany | March 27, 2000

abstract

The high throughput X-ray spectroscopy mission XMM is the second `Cornerstone' project in the ESA long term Program 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 (EPIC, European Photon Imaging Camera) and medium resolution dispersive spectroscopic instruments (RGS, Reflection Grating Spectrometer). 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 (earth, sun) must be ensured. The straylight reduction capability is quantified by the PST (Point Source Transmittance). The experimental verification of the PST on the XMM flight model mirror modules for off- axis angles between 1 degree(s) and 85 degree(s) is presented in this paper. For the first time a straylight test of a complete telescope was performed in air measuring the telescope PST over a range of 9 orders of magnitude (10-2 to 10-11).

© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Christian Wuehrer ; Reinhard A. Birkl ; Peter de Zoeten ; Albrecht Frey ; Edgar Hoelzle, et al.
"PST measurements and wide-angle straylight analyses of the XMM (X-Ray Multi Mirror) telescopes", Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, 113 (July 18, 2000); doi:10.1117/12.391547; http://dx.doi.org/10.1117/12.391547


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