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Proceedings Paper

MEMS deformable mirror CubeSat testbed
Author(s): Kerri L. Cahoy; Anne D. Marinan; Benjamin Novak; Caitlin Kerr; Tam Nguyen; Matthew Webber; Grant Falkenburg; Andrew Barg; Kristen Berry; Ashley Carlton; Ruslan Belikov; Eduardo A. Bendek
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Paper Abstract

To meet the high contrast requirement of 1 × 10−10to image an Earth-like planet around a Sun-like star, space telescopes equipped with coronagraphs require wavefront control systems. Deformable mirrors are a key element of these systems that correct for optical imperfections, thermal distortions, and diffraction that would otherwise corrupt the wavefront and ruin the contrast. However, high-actuator-count MEMS deformable mirrors have yet to fly in space long enough to characterize their on-orbit performance and reduce risk by developing and operating their supporting systems. The goal of the MEMS Deformable Mirror CubeSat Testbed is to develop a CubeSat-scale demonstration of MEMS deformable mirror and wavefront sensing technology. In this paper, we consider two approaches for a MEMS deformable mirror technology demonstration payload that will fit within the mass, power, and volume constraints of a CubeSat: 1) a Michelson interferometer and 2) a Shack-Hartmann wavefront sensor. We clarify the constraints on the payload based on the resources required for supporting CubeSat subsystems drawn from subsystems that we have developed for a different CubeSat flight project. We discuss results from payload lab prototypes and their utility in defining mission requirements.

Paper Details

Date Published: 26 September 2013
PDF: 17 pages
Proc. SPIE 8864, Techniques and Instrumentation for Detection of Exoplanets VI, 88640U (26 September 2013); doi: 10.1117/12.2024684
Show Author Affiliations
Kerri L. Cahoy, Massachusetts Institute of Technology (United States)
Anne D. Marinan, Massachusetts Institute of Technology (United States)
Benjamin Novak, Massachusetts Institute of Technology (United States)
Caitlin Kerr, Massachusetts Institute of Technology (United States)
Tam Nguyen, Massachusetts Institute of Technology (United States)
Matthew Webber, Massachusetts Institute of Technology (United States)
Grant Falkenburg, Massachusetts Institute of Technology (United States)
Andrew Barg, Massachusetts Institute of Technology (United States)
Kristen Berry, Massachusetts Institute of Technology (United States)
Ashley Carlton, Massachusetts Institute of Technology (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Eduardo A. Bendek, NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 8864:
Techniques and Instrumentation for Detection of Exoplanets VI
Stuart Shaklan, Editor(s)

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