The deformable mirror demonstration mission (DeMi) CubeSat: optomechanical design validation and laboratory calibration
Name
1069857.pdf
Description
Published version
Size
1.33 MB
Format
Adobe PDF
Checksum (MD5)
94bf16498af6337c5e16f11433821f42
Author(s)
Douglas, Ewan S.
Cahoy, Kerri L.
Barnes, Derek
Haughwout, Christian
Holden, Bobby G.
Stein, Abigail J.
Allan, Gregory
Furesz, Gabor
Egan, Mark
do Vale Pereira, Paula
Date Issued
August 21, 2018
Publisher
SPIE
Citation
Douglas, Ewan S., Cahoy, Kerri L., Barnes, Derek, Haughwout, Christian, Holden, Bobby G. et al. 2018. "The deformable mirror demonstration mission (DeMi) CubeSat: optomechanical design validation and laboratory calibration."
Version
Final published version
Abstract
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. Coronagraphs on future space telescopes will require precise wavefront correction to detect Earth-like exoplanets near their host stars. High-actuator count microelectromechanical system (MEMS) deformable mirrors provide wavefront control with low size, weight, and power. The Deformable Mirror Demonstration Mission (DeMi) payload will demonstrate a 140 actuator MEMS Deformable Mirror (DM) with 5:5 μm maximum stroke. We present the flight optomechanical design, lab tests of the flight wavefront sensor and wavefront reconstructor, and simulations of closed-loop control of wavefront aberrations. We also present the compact flight DM controller, capable of driving up to 192 actuator channels at 0-250V with 14-bit resolution. Two embedded Raspberry Pi 3 compute modules are used for task management and wavefront reconstruction. The spacecraft is a 6U CubeSat (30 cm x 20 cm x 10 cm) and launch is planned for 2019.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
MIT Kavli Institute for Astrophysics and Space Research
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/10.1117/12.2314192
