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Proceedings Paper

Payload characterization for CubeSat demonstration of MEMS deformable mirrors
Author(s): Anne Marinan; Kerri Cahoy; Matthew Webber; Ruslan Belikov; Eduardo Bendek
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Paper Abstract

Coronagraphic space telescopes require wavefront control systems for high-contrast imaging applications such as exoplanet direct imaging. High-actuator-count MEMS deformable mirrors (DM) are a key element of these wavefront control systems yet have not been flown in space long enough to characterize their on-orbit performance. The MEMS Deformable Mirror CubeSat Testbed is a conceptual nanosatellite demonstration of MEMS DM and wavefront sensing technology. The testbed platform is a 3U CubeSat bus. Of the 10 x 10 x 34.05 cm (3U) available volume, a 10 x 10 x 15 cm space is reserved for the optical payload. The main purpose of the payload is to characterize and calibrate the onorbit performance of a MEMS deformable mirror over an extended period of time (months). Its design incorporates both a Shack Hartmann wavefront sensor (internal laser illumination), and a focal plane sensor (used with an external aperture to image bright stars). We baseline a 32-actuator Boston Micromachines Mini deformable mirror for this mission, though the design is flexible and can be applied to mirrors from other vendors. We present the mission design and payload architecture and discuss experiment design, requirements, and performance simulations.

Paper Details

Date Published: 7 August 2014
PDF: 16 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 91483Z (7 August 2014); doi: 10.1117/12.2055682
Show Author Affiliations
Anne Marinan, Massachusetts Institute of Technology (United States)
Kerri Cahoy, Massachusetts Institute of Technology (United States)
Matthew Webber, Massachusetts Institute of Technology (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Eduardo Bendek, NASA Ames Research Ctr. (United States)


Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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