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Proceedings Paper

Active mirrors for future space telescopes
Author(s): John Steeves; David Redding; James K. Wallace; Charles Lawrence; Todd Gaier; Randall Bartman; Raef Mikhail; Jeff Cavaco; John Vayda
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Paper Abstract

The demanding science goals of future astrophysics missions currently under study for the 2020 Decadal Survey impose significant technological requirements on their associated telescopes. These concepts currently call for apertures as large as 15 m (LUVOIR), and operational temperatures as low as 4 Kelvin (OST). Advanced mirror technologies, such as those implementing a high degree of actuation at the primary, can help to overcome the challenges associated with these missions by providing in-situ wavefront correction capabilities. Active mirrors can also greatly reduce the cost/complexity associated with mirror fabrication as well as system I and T as on-orbit performance specifications can be achieved under a variety of test conditions (i.e. room/cryogenic temperatures, 0g/1g). JPL has significant experience in this area for visible/near-infrared applications, however future mission requirements create a new set of challenges for this technology. This paper presents design, analysis, and test results for lightweight silicon-carbide mirrors with integrated actuation capabilities. In particular, studies have been performed to test the performance of these mirrors at cryogenic temperatures.

Paper Details

Date Published: 10 July 2018
PDF: 10 pages
Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 1070615 (10 July 2018); doi: 10.1117/12.2312645
Show Author Affiliations
John Steeves, Jet Propulsion Lab. (United States)
David Redding, Jet Propulsion Lab. (United States)
James K. Wallace, Jet Propulsion Lab. (United States)
Charles Lawrence, Jet Propulsion Lab. (United States)
Todd Gaier, Jet Propulsion Lab. (United States)
Randall Bartman, Jet Propulsion Lab. (United States)
Raef Mikhail, AOA Xinetics (United States)
Jeff Cavaco, AOA Xinetics (United States)
John Vayda, AOA Xinetics (United States)

Published in SPIE Proceedings Vol. 10706:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Ramón Navarro; Roland Geyl, Editor(s)

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