Programmable Microshutter Arrays for the JWST NIRSpec: Optical Performance

Kutyrev, A.; Arendt, Richard G.; Moseley, S. H.; Boucarut, Rene A.; Hadjimichael, Theodore; Jhabvala, M.; King, Todd; Li, M.J.; Loughlin, John; Rapchun, David A.; Schwinger, D. S.; Silverberg, R. F.

doi:10.1109/jstqe.2004.830614

Cited by 26 publications

(18 citation statements)

References 3 publications

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“…Other relevant space-based efforts include the South Korean MEMS Telescope for Extreme Lightning (MTEL) 18,19 and the James Webb Space Telescope microshutter array 20 , though the actuators and functionality of the mirrors on these missions are very different from the MEMS DMs required for high contrast imaging.…”

Section: Space Qualification Of Mems Dmsmentioning

confidence: 99%

Payload characterization for CubeSat demonstration of MEMS deformable mirrors

et al. 2014

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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.

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Section: Space Qualification Of Mems Dmsmentioning

confidence: 99%

Payload characterization for CubeSat demonstration of MEMS deformable mirrors

et al. 2014

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“…The James Webb Space Telescope microshutter array 41 is another example of a related impressive microarray designed and built for space operation with on/off functionality as a programmable mask whose development, integration, and test efforts can help inform the CubeSat DMD, but which still does not provide the needed high-accuracy demonstration of MEMS DM actuators on orbit over extended periods of time for the purpose of wavefront control.…”

Section: Context and Related Effortsmentioning

confidence: 99%

Wavefront control in space with MEMS deformable mirrors for exoplanet direct imaging

Cahoy

Marinan

Novak

et al. 2013

J. Micro/Nanolith. MEMS MOEMS

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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. © The Authors.Published by SPIE under a Creative Commons Attribution 3.0 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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“…The James Webb Space Telescope microshutter array [34] is another example of a related impressive microarray designed and built for space operation with on/off functionality as a programmable mask whose development, integration, and test efforts can help inform the CubeSat DMD, but which still does not provide the needed highaccuracy demonstration of MEMS DM actuators on orbit over extended periods of time for the purpose of wavefront control.…”

Section: Context and Related Effortsmentioning

confidence: 99%