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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 27, Iss. 8 — Apr. 15, 1988
  • pp: 1404–1413

Design, construction, and performance of the ROSAT high-resolution x-ray mirror assembly

Bernd Aschenbach  »View Author Affiliations


Applied Optics, Vol. 27, Issue 8, pp. 1404-1413 (1988)
http://dx.doi.org/10.1364/AO.27.001404


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Abstract

A grazing incidence telescope has been developed for the x-ray astronomy satellite ROSAT including a verification model and a flight model. The telescope consists of a fourfold nested Wolter type I mirror assembly of 84-cm front aperture and 240-cm focal length. The verification model has been built and fully assembled to a telescope. Full aperture x-ray measurements performed in our 130-m long-beam facility are pesented and successfully compared with model predictions based on mirror metrology data. An energy independent angular resolution of 4-sec of arc half-energy width for the encircled point spread function and a mirror surface microroughness of <3 Å have been achieved. Metrology of the actual flight mirrors (although not yet assembled to a telescope) indicates an even better performance.

© 1988 Optical Society of America

History
Original Manuscript: October 29, 1987
Published: April 15, 1988

Citation
Bernd Aschenbach, "Design, construction, and performance of the ROSAT high-resolution x-ray mirror assembly," Appl. Opt. 27, 1404-1413 (1988)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-27-8-1404

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