18 July 2016 Alignment and distortion-free integration of lightweight mirrors into meta-shells for high-resolution astronomical x-ray optics
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Abstract
High-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”.
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Kai-Wing Chan, Kai-Wing Chan, William W. Zhang, William W. Zhang, Mark J. Schofield, Mark J. Schofield, Ai Numata, Ai Numata, James R. Mazzarella, James R. Mazzarella, Timo T. Saha, Timo T. Saha, Michael P. Biskach, Michael P. Biskach, Ryan S. McClelland, Ryan S. McClelland, Jason Niemeyer, Jason Niemeyer, Marton V. Sharpe, Marton V. Sharpe, Lawrence G. Olsen, Lawrence G. Olsen, } "Alignment and distortion-free integration of lightweight mirrors into meta-shells for high-resolution astronomical x-ray optics", Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 99056X (18 July 2016); doi: 10.1117/12.2232560; https://doi.org/10.1117/12.2232560
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