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Journal of Micro/Nanolithography, MEMS, and MOEMS • Open Access

Wavefront control in space with MEMS deformable mirrors for exoplanet direct imaging
Author(s): Kerri L. Cahoy; Anne D. Marinan; Benjamin Novak; Caitlin Kerr; Tam Nguyen; Matthew Webber; Grant Falkenburg; Andrew Barg

Paper 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.

Paper Details

Date Published: 2 December 2013
PDF: 10 pages
J. Micro/Nanolith. 13(1) 011105 doi: 10.1117/1.JMM.13.1.011105
Published in: Journal of Micro/Nanolithography, MEMS, and MOEMS Volume 13, Issue 1
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)


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