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Proceedings Paper

Studies in thin diffraction gratings for flight applications
Author(s): Ann Shipley; Brian Gleeson; Randall McEntaffer; Webster Cash
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Paper Abstract

The quest for maximum throughput in high energy astronomy instruments has influenced an increasing trend in spectrograph design toward closely packed mirror and grating arrays. Gratings have additional challenges to those required for mirrors and are evaluated separately in this study. Since these instruments typically operate above earth's atmosphere, grating arrays are subject to a launch vehicle environment. Packing gratings close together in a confined space decreases substrate thickness below traditionally accepted standards for maintenance of surface figure. The everpresent pressure to minimize mass in flight payloads drives substrates even thinner. The University of Colorado has performed a study of several methods that may be employed to make thin gratings. In this paper, some traditional techniques are compared to less conventional ideas for using thin substrates. Environmental effects necessary for flight applications are also folded into the analysis for each thin grating type.

Paper Details

Date Published: 6 July 2006
PDF: 12 pages
Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62733K (6 July 2006); doi: 10.1117/12.672288
Show Author Affiliations
Ann Shipley, Univ. of Colorado, Boulder, Ctr. for Astrophysics and Space Astronomy (United States)
Brian Gleeson, Univ. of Colorado, Boulder, Ctr. for Astrophysics and Space Astronomy (United States)
Randall McEntaffer, Univ. of Colorado, Boulder, Ctr. for Astrophysics and Space Astronomy (United States)
Webster Cash, Univ. of Colorado, Boulder, Ctr. for Astrophysics and Space Astronomy (United States)


Published in SPIE Proceedings Vol. 6273:
Optomechanical Technologies for Astronomy
Eli Atad-Ettedgui; Joseph Antebi; Dietrich Lemke, Editor(s)

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