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Alignment and Distortion-Free Integration of Lightweight Mirrors into Meta-Shells for High-Resolution Astronomical X-Ray OpticsHigh-resolution, high throughput optics for x-ray astronomy requires fabrication of well-formed mirror segments and their integration with arc-second level precision. Recently, advances of fabrication of silicon mirrors developed at NASA/Goddard prompted us to develop a new method of mirror integration. The new integration scheme takes advantage of the stiffer, more thermally conductive, and lower-CTE silicon, compared to glass, to build a telescope of much lighter weight. In this paper, we address issues of aligning and bonding mirrors with this method. In this preliminary work, we demonstrated the basic viability of such scheme. Using glass mirrors, we demonstrated that alignment error of 1" and bonding error 2" can be achieved for mirrors in a single shell. We will address the immediate plan to demonstrate the bonding reliability and to develop technology to build up a mirror stack and a whole "meta-shell".
Document ID
20170006142
Document Type
Conference Paper
External Source(s)
Authors
Chan, Kai-Wing (Maryland Univ. Baltimore County Baltimore, MD, United States)
Zhang, William W. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Schofield, Mark J. (SGT, Inc. Greenbelt, MD, United States)
Numata, Ai (SGT, Inc. Greenbelt, MD, United States)
Mazzarella, James R. (SGT, Inc. Greenbelt, MD, United States)
Saha, Timo T. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Biskach, Michael P. (SGT, Inc. Greenbelt, MD, United States)
McCelland, Ryan S. (SGT, Inc. Greenbelt, MD, United States)
Niemeyer, Jason (SGT, Inc. Greenbelt, MD, United States)
Sharpe, Marton V. (SGT, Inc. Greenbelt, MD, United States)
Olsen, Lawrence G. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
July 6, 2017
Publication Date
July 18, 2016
Publication Information
Publication: SPIE Proceedings
Volume: 9905
ISSN: 0277-786X
Subject Category
Astrophysics
Optics
Report/Patent Number
GSFC-E-DAA-TN43994
Meeting Information
Space Telescopes and Instrumentation 2016 Conference(Edinburgh)
Funding Number(s)
CONTRACT_GRANT: NNG15CR64C
CONTRACT_GRANT: NNG17PT01A
CONTRACT_GRANT: NNG12CR31C
Distribution Limits
Public
Copyright
Other
Keywords
X-ray optics
silicon mirrors
segmented mirrors
mirror bonding
lightweight mirrors
mirror alignment