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Proceedings Paper

Figure measurements of high-energy x-ray replicated optics
Author(s): Mikhail V. Gubarev; Brian D. Ramsey; Thomas Kester; Chet O. Speegle; Darell Engelhaupt; Greg Martin
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Paper Abstract

We are developing grazing incidence x-ray optics for a balloon-borne hard-x-ray telescope (HERO). The HERO mirror shells are fabricated using electroform-nickel replication off super-polished cylindrical mandrels. One of the sources for mirror resolution error is departure of the shell figure from prescription. We have modified a Vertical-scan Long Trace Profilometer (VLTP) in order to measure the figure of the inner surface of the HERO mirror shells for diameters as small as 74 mm. Metrology of the figure, the microroughness, tilt angle, the circularity for the shell mirrors and the mandrels, as well as alignment procedures are discussed. Comparison of metrology of the mandrel and the shells is presented together with results from x-ray tests.

Paper Details

Date Published: 29 January 2004
PDF: 8 pages
Proc. SPIE 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy, (29 January 2004); doi: 10.1117/12.508336
Show Author Affiliations
Mikhail V. Gubarev, Universities Space Research Association (United States)
Brian D. Ramsey, NASA Marshall Space Flight Ctr. (United States)
Thomas Kester, NASA Marshall Space Flight Ctr. (United States)
Chet O. Speegle, Raytheon Co. (United States)
Darell Engelhaupt, Univ. of Alabama in Huntsville (United States)
Greg Martin, ERC, Inc. (United States)

Published in SPIE Proceedings Vol. 5168:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy
Oberto Citterio; Stephen L. O'Dell, Editor(s)

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