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2 December 2013 Wavefront control in space with MEMS deformable mirrors for exoplanet direct imaging
Kerri L. Cahoy, Anne D. Marinan, Benjamin Novak, Caitlin Kerr, Tam Nguyen, Matthew Webber, Grant Falkenburg, Andrew Barg
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Journal of Micro/Nanolithography, MEMS, and MOEMS, Vol. 13, Issue 1, 011105 (December 2013). https://doi.org/10.1117/1.JMM.13.1.011105
Abstract
To meet the high contrast requirement of 1×10−10 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.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Kerri L. Cahoy, 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(1), 011105 (2 December 2013). https://doi.org/10.1117/1.JMM.13.1.011105
Published: 2 December 2013
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Cited by 11 scholarly publications and 1 patent.
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KEYWORDS
Microelectromechanical systems
Wavefronts
Stars
Mirrors
Exoplanets
Sensors
Wavefront sensors
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