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Proceedings Paper

Constellation-X spectroscopy x-ray telescope (SXT)
Author(s): Robert Petre; William W. Zhang; David A. Content; Timo T. Saha; Jeff Stewart; Jason H. Hair; Diep Nguyen; William A. Podgorski; William R. Davis; Mark D. Freeman; Lester M. Cohen; Mark L. Schattenburg; Ralf K. Heilmann; Yanxia Sun; Craig R. Forest
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Paper Abstract

We provide an overview of the Constellation-X SXT development program. We describe the performance requirements and goals, and the status of the technology development program. The SXT has a 1.6-meter diameter, a 10-meter focal length, and is to have an angular resolution exceeding 15 arc seconds. It has a modular design, incorporting lightweight, multiply nested, segmented Wolter Type I x-ray mirrors. All aspects of the design lend themselves to mass-production. The reflecting surfaces are produced by epoxy replication off precision mandrels onto glass substrates that have been accurately formed by thermal slumping. Coalignment of groups of relfectors to the required sub-micron accuracy is assisted by precison silicon micorstructures. Optical alignment is performed using the Centroid Detector Assembly originally developed for aligning the Chandra mirror. Recent efforts have concentrated on the producotin of an Engineering Unit, incorporating the components for the first time into a flight-like configuration. We summarize the status of the development of the processes for the key components and the initial metrology results of the Engineering Unit.

Paper Details

Date Published: 11 March 2003
PDF: 8 pages
Proc. SPIE 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy, (11 March 2003); doi: 10.1117/12.461317
Show Author Affiliations
Robert Petre, NASA Goddard Space Flight Ctr. (United States)
William W. Zhang, NASA Goddard Space Flight Ctr. (United States)
David A. Content, NASA Goddard Space Flight Ctr. (United States)
Timo T. Saha, NASA Goddard Space Flight Ctr. (United States)
Jeff Stewart, NASA Goddard Space Flight Ctr. (United States)
Jason H. Hair, NASA Goddard Space Flight Ctr. (United States)
Diep Nguyen, NASA Goddard Space Flight Ctr. (United States)
William A. Podgorski, Smithsonian Astrophysical Observatory (United States)
William R. Davis, Smithsonian Astrophysical Observatory (United States)
Mark D. Freeman, Smithsonian Astrophysical Observatory (United States)
Lester M. Cohen, Smithsonian Astrophysical Observatory (United States)
Mark L. Schattenburg, Massachusetts Institute of Technology (United States)
Ralf K. Heilmann, Massachusetts Institute of Technology (United States)
Yanxia Sun, Massachusetts Institute of Technology (United States)
Craig R. Forest, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 4851:
X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy
Joachim E. Truemper; Harvey D. Tananbaum, Editor(s)

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