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Proceedings Paper

Performance of a precision high-density deformable mirror for extremely high contrast imaging astronomy from space
Author(s): John T. Trauger; Dwight Moody; Brian Gordon; Yekta Gursel; Mark A. Ealey; Roger B. Bagwell
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Paper Abstract

Active wavefront correction of a space telescope provides a technology path for extremely high contrast imaging astronomy at levels well beyond the capabilities of current telescope systems. A precision deformable mirror technology intended specifically for wavefront correction in a visible/near-infrared space telescope has been developed at Xinetics and extensively tested at JPL over the past several years. Active wavefront phase correction has been demonstrated to 1 Angstrom rms over the spatial frequency range accessible to a mirror with an array of actuators on a 1 mm pitch. It is based on a modular electroceramic design that is scalable to 1000s of actuator elements coupled to the surface of a thin mirror facesheet. It is controlled by a low-power multiplexed driver system. Demonstrated surface figure control, high actuator density, and low power dissipation are described. Performance specifications are discussed in the context of the Eclipse point design for a coronagraphic space telescope.

Paper Details

Date Published: 24 February 2003
PDF: 8 pages
Proc. SPIE 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation, (24 February 2003); doi: 10.1117/12.460027
Show Author Affiliations
John T. Trauger, Jet Propulsion Lab. (United States)
Dwight Moody, Jet Propulsion Lab. (United States)
Brian Gordon, Jet Propulsion Lab. (United States)
Yekta Gursel, Jet Propulsion Lab. (United States)
Mark A. Ealey, Xinetics, Inc. (United States)
Roger B. Bagwell, Xinetics, Inc. (United States)

Published in SPIE Proceedings Vol. 4854:
Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation
J. Chris Blades; Oswald H. W. Siegmund, Editor(s)

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