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Proceedings Paper

Alignment and test of a Constellation-X SXT mirror segment pair
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Paper Abstract

A single Constellation-X Spectroscopy X-ray Telescope (SXT) mirror segment pair is being aligned in the Optical Alignment Pathfinder 2 (OAP2) platform using a combination of mechanical and optical techniques. Coarse positioning was provided through a contact probe, the alignment was refined in a collimated while-light facility used for the Suzaku (ASTRO-E2) satellite, and then finalized with a combination of a Centroid Detector Assembly (CDA) and an interferometer coupled to a novel conical null lens providing surface map imaging over 60% of the mirror surface at one time. Due to a variety of reasons, the positioning and figure of the mirror segment under examination can shift, and we test how reliably high quality alignment can be reproduced on any given day. Also, the mirror segment's deformation response to deliberate misalignments has been tested, providing a response matrix for these thin glass mirror segments.

Paper Details

Date Published: 20 June 2006
PDF: 10 pages
Proc. SPIE 6266, Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray, 62661W (20 June 2006); doi: 10.1117/12.672663
Show Author Affiliations
Scott M. Owens, NASA Goddard Space Flight Ctr. (United States)
Thomas Meagher, NASA Goddard Space Flight Ctr. (United States)
Theo Hadjimichael, NASA Goddard Space Flight Ctr. (United States)
Swales Aerospace (United States)
John P. Lehan, NASA Goddard Space Flight Ctr. (United States)
Universities Space Research Association (United States)
David A. Content, NASA Goddard Space Flight Ctr. (United States)
Timo Saha, NASA Goddard Space Flight Ctr. (United States)
William W. Zhang, NASA Goddard Space Flight Ctr. (United States)
Rob Petre, NASA Goddard Space Flight Ctr. (United States)
Paul Reid, Smithsonian Astrophysical Observatory (United States)
William D. Jones, NASA Marshall Space Flight Ctr. (United States)
Stephen O'Dell, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 6266:
Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
Martin J. L. Turner; Günther Hasinger, Editor(s)

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