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Surface finish quality of the outer AXAF mirror pair based on X-ray measurements of the VETA-IWe employ the X-ray measurements of the VETA-I taken at the X-Ray Calibration Facility (XRCF) of the Marshall Space Flight Center (MSFC) to extract information about the surface finish quality of the outermost pair of AXAF mirrors. The particular measurements we consider are 1D scans of the core of the point response function (PRF) (FWHM scans), the encircled energy as a function of radius, and 1D scans of the wings of the PRF. We discuss briefly our raytrace model which incorporates the numerous effects present in the VETA-I test, such as the finite source distance, the size and shape of the X-ray source, the residual gravitational distortions of the optic, the despace of the VETA-I, and particulate contamination. We show how the data constrain the amplitude of mirror surface deviations for spatial frequencies greater than about 0.1/mm. Constraints on the average amplitude of circumferential slope errors are derived as well.
Document ID
19930055617
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hughes, John P.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Schwartz, Daniel
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Szentgyorgyi, Andrew
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Van Speybroeck, Leon
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Zhao, Ping
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Multilayer and grazing incidence X-ray(EUV optics for astronomy and projection lithography; Proceedings of the Meeting, San Diego, CA, July 19-22, 1992 (A93-39601 15-74)
Publisher: Society of Photo-Optical Instrumentation Engineers
Subject Category
Optics
Accession Number
93A39614
Funding Number(s)
CONTRACT_GRANT: NAS8-36123
Distribution Limits
Public
Copyright
Other

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