Wavefront control in space with MEMS deformable mirrors for exoplanet direct imaging
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Cahoy_Wavefront control.pdf
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4.24 MB
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Author(s)
Marinan, Anne D.
Barg, Andrew
Cahoy, Kerri
Novak, Benjamin G.
Kerr, Caitlin E.
Webber, Matthew William
Falkenburg, Grant E.
Nguyen, Tam T
Date Issued
December 2013
Journal
Journal of Micro/Nanolithography, MEMS, and MOEMS
Publisher
SPIE
Citation
Cahoy, Kerri L., Anne D. Marinan, Benjamin Novak, Caitlin Kerr, Tam Nguyen, Matthew Webber, Grant Falkenburg, and Andrew Barg. “Wavefront Control in Space with MEMS Deformable Mirrors for Exoplanet Direct Imaging.” Journal of Micro/Nanolithography, MEMS, and MOEMS 13, no. 1 (December 2, 2013): 011105.
Version
Final published version
Abstract
To meet the high contrast requirement of 1×10[superscript −10] to image an Earth-like planet around a sun-like star, space telescopes equipped with coronagraphs require wavefront control systems. Deformable mirrors (DMs) are a key element of a wavefront control system, as they correct for imperfections, thermal distortions, and diffraction that would otherwise corrupt the wavefront and ruin the contrast. The goal of the CubeSat DM technology demonstration mission is to test the ability of a microelectromechanical system (MEMS) DM to perform wavefront control on-orbit on a nanosatellite platform. We consider two approaches for an MEMS DM 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 laboratory prototypes and their utility in defining mission requirements.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1117/1.JMM.13.1.011105
