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Proceedings Paper

Performance expectation versus reality
Author(s): Leon P. Van Speybroeck; Diab Jerius; Richard J. Edgar; Terrance J. Gaetz; Ping Zhao; Paul B. Reid
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Paper Abstract

The AXAF (Advanced X-ray Astrophysics Facility) high resolution mirror assembly (HRMA) now is complete and has been tested at the NASA Marshall Space Flight Center (MSFC) X-ray Calibration Facility (XRCF). The surface and alignment properties of the mirror were thoroughly measured before the x-ray test, which allowed accurate performance predictions to be performed. The preliminary analysis of the measured x-ray image distributions for all energies tested show excellent agreement with predictions made before the beginning of the test. There is a discrepancy between the measured and predicted effective areas; this typically is less than 5%, and is less than 13% for all energies measured. We present evidence that this discrepancy is due to uncertainties in the calibration of the test instrumentation, and therefore can be expected to be reduced when results from further instrument calibration tests now in progress are incorporated into the analysis. We predict that 65 - 80% (depending upon energy) of the flux from an imaged point source will be contained on a one arc second diameter aperture in flight. We expect the HRMA to more than fulfill the requirements necessary to achieve the AXAF scientific objectives.

Paper Details

Date Published: 11 July 1997
PDF: 16 pages
Proc. SPIE 3113, Grazing Incidence and Multilayer X-Ray Optical Systems, (11 July 1997); doi: 10.1117/12.278890
Show Author Affiliations
Leon P. Van Speybroeck, Smithsonian Astrophysical Observatory (United States)
Diab Jerius, Smithsonian Astrophysical Observatory (United States)
Richard J. Edgar, Smithsonian Astrophysical Observatory (United States)
Terrance J. Gaetz, Smithsonian Astrophysical Observatory (United States)
Ping Zhao, Smithsonian Astrophysical Observatory (United States)
Paul B. Reid, Hughes Danbury Optical Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 3113:
Grazing Incidence and Multilayer X-Ray Optical Systems
Richard B. Hoover; Arthur B. C. Walker II, Editor(s)

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