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Proceedings Paper

Alignment and bonding of silicon mirrors for high-resolution astronomical x-ray optics
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Paper Abstract

Recent advances in the fabrication of silicon mirrors and their alignment and integration methods make it possible to build large-area, lightweight, high-resolution x-ray telescopes with arc-second angular resolution. Such a telescope, having simultaneously arc-second resolution and large (> 1 m2 ) collecting area, has never been built before and it will revolutionize high energy astronomy. For such optics, the challenges are twofold: fabrication of high quality mirror segments and precise integration of thousands of these mirrors to a common sharp focus. In this paper, we address the technology for the mirror integration carried out at Goddard Space Flight Center and report the recent result of making such high-resolution optics. We address the crucial technology components: positioning a mirror, measuring its focus, adjusting its mount pointsto optimize the focus, bonding the mirror, and co-alignment of mirrors. We also present the latest x-ray test results that demonstrate the efficacy of such methods and address areas for further improvement. Presently, mirrors built this way have a resolution of 2²-3² HPD (half-ower diameter).

Paper Details

Date Published: 6 July 2018
PDF: 12 pages
Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 1069940 (6 July 2018); doi: 10.1117/12.2312562
Show Author Affiliations
Kai-Wing Chan, Univ. of Maryland, Baltimore County (United States)
NASA Goddard Space Flight Ctr. (United States)
James R. Mazzarella, SGT, Inc. (United States)
NASA Goddard Space Flight Ctr. (United States)
Timo T. Saha, NASA Goddard Space Flight Ctr. (United States)
William W. Zhang, NASA Goddard Space Flight Ctr. (United States)
Ryan S. McClelland, NASA Goddard Space Flight Ctr. (United States)
Michael P. Biskach, SGT, Inc. (United States)
NASA Goddard Space Flight Ctr. (United States)
Peter M. Solly, SGT, Inc. (United States)
NASA Goddard Space Flight Ctr. (United States)
Raul E. Riveros, Univ. of Maryland, Baltimore County (United States)
NASA Goddard Space Flight Ctr. (United States)
Ai Numata, SGT, Inc. (United States)
NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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