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Proceedings Paper

Advanced X-Ray Astrophysics Facility (AXAF)
Author(s): Martin C. Weisskopf
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Paper Abstract

The Advanced X-Ray Astrophysics Facility (AXAF) will be a national observatory designed for the observation of galactic and extragalactic X-ray sources. The observatory is currently planned to be launched by the Space Shuttle, maintainable in orbit and retrievable, if necessary, during its 10 to 15 years of operation. The heart of the AXAF is an X-ray telescope made up of six Wolter type I mirrors, with the diameter of the outermost mirror 1.2 m. The focal length will be 10 m, and the AXAF will allow for interchanging and (in-orbit) replacing of focal plane instruments. The optics are being designed to provide a spatial resolution of 0.5 arc second over a several arc-minute field and somewhat reduced angular resolution over the entire 1-degree field of view. The energy bandwidth will be 0.1 to 8 keV. These design goals place severe requirements on the materials, tolerances, construction, and alignment of the telescope. These will be discussed and compared to previous work in this area.

Paper Details

Date Published: 15 August 1980
PDF: 11 pages
Proc. SPIE 0228, Active Optical Devices and Applications, (15 August 1980); doi: 10.1117/12.958774
Show Author Affiliations
Martin C. Weisskopf, Space Sciences Laboratory, NASA/Marshall Space Flight Center (United States)


Published in SPIE Proceedings Vol. 0228:
Active Optical Devices and Applications
William J. Cuneo, Editor(s)

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