20% bandwidth wavefront control experiments at the High-Contrast Spectroscopy Testbed (HCST)

2021 ◽  
Author(s):  
Jorge Llop-Sayson ◽  
Nemanja Jovanovic ◽  
Dimitri Mawet ◽  
Carl Coker
Keyword(s):  
High Contrast ◽  
Wavefront Control

scholarly journals The high-contrast spectroscopy testbed for segmented telescopes (HCST): new wavefront control demonstrations

2019 ◽  
Author(s):  
Jorge Llop Sayson ◽  
Garreth Ruane ◽  
Nemanja Jovanovic ◽  
Dimitri Mawet ◽  
Daniel Echeverri ◽  
...  
Keyword(s):  
High Contrast ◽  
Wavefront Control

scholarly journals MEMS Deformable Mirrors for Space-Based High-Contrast Imaging

Micromachines ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 366 ◽  
Author(s):  
Rachel E. Morgan ◽  
Ewan S. Douglas ◽  
Gregory W. Allan ◽  
Paul Bierden ◽  
Supriya Chakrabarti ◽  
...  
Keyword(s):  
High Altitude ◽  
Space Environment ◽  
Optical Systems ◽  
Sounding Rocket ◽  
Deformable Mirrors ◽  
Wide Field ◽  
High Contrast ◽  
Contrast Imaging ◽  
Wavefront Control ◽  
High Contrast Imaging

Micro-Electro-Mechanical Systems (MEMS) Deformable Mirrors (DMs) enable precise wavefront control for optical systems. This technology can be used to meet the extreme wavefront control requirements for high contrast imaging of exoplanets with coronagraph instruments. MEMS DM technology is being demonstrated and developed in preparation for future exoplanet high contrast imaging space telescopes, including the Wide Field Infrared Survey Telescope (WFIRST) mission which supported the development of a 2040 actuator MEMS DM. In this paper, we discuss ground testing results and several projects which demonstrate the operation of MEMS DMs in the space environment. The missions include the Planet Imaging Concept Testbed Using a Recoverable Experiment (PICTURE) sounding rocket (launched 2011), the Planet Imaging Coronagraphic Technology Using a Reconfigurable Experimental Base (PICTURE-B) sounding rocket (launched 2015), the Planetary Imaging Concept Testbed Using a Recoverable Experiment - Coronagraph (PICTURE-C) high altitude balloon (expected launch 2019), the High Contrast Imaging Balloon System (HiCIBaS) high altitude balloon (launched 2018), and the Deformable Mirror Demonstration Mission (DeMi) CubeSat mission (expected launch late 2019). We summarize results from the previously flown missions and objectives for the missions that are next on the pad. PICTURE had technical difficulties with the sounding rocket telemetry system. PICTURE-B demonstrated functionality at >100 km altitude after the payload experienced 12-g RMS (Vehicle Level 2) test and sounding rocket launch loads. The PICTURE-C balloon aims to demonstrate 10 - 7 contrast using a vector vortex coronagraph, image plane wavefront sensor, and a 952 actuator MEMS DM. The HiClBaS flight experienced a DM cabling issue, but the 37-segment hexagonal piston-tip-tilt DM is operational post-flight. The DeMi mission aims to demonstrate wavefront control to a precision of less than 100 nm RMS in space with a 140 actuator MEMS DM.

High-contrast imager for Complex Aperture Telescopes (HiCAT). 4. Status and wavefront control development

2016 ◽  
Author(s):  
Lucie Leboulleux ◽  
Mamadou N'Diaye ◽  
A. J. E. Riggs ◽  
Sylvain Egron ◽  
Johan Mazoyer ◽  
...  
Keyword(s):  
High Contrast ◽  
Wavefront Control

scholarly journals High-contrast imager for complex aperture telescopes (HiCAT): 3. first lab results with wavefront control

2015 ◽  
Author(s):  
Mamadou N'Diaye ◽  
Johan Mazoyer ◽  
Élodie Choquet ◽  
Laurent Pueyo ◽  
Marshall D. Perrin ◽  
...  
Keyword(s):  
High Contrast ◽  
Wavefront Control

scholarly journals High-contrast integral field spectrograph (HCIFS): multi-spectral wavefront control and reduced-dimensional system identification

2020 ◽  
Vol 28 (15) ◽  
pp. 22412
Author(s):  
He Sun ◽  
Alexei Goun ◽  
Susan Redmond ◽  
Michael Galvin ◽  
Tyler Groff ◽  
...  
Keyword(s):  
System Identification ◽  
Dimensional System ◽  
High Contrast ◽  
Wavefront Control ◽  
Integral Field Spectrograph ◽  
Integral Field

scholarly journals Sparse wavefront control: A new approach to high-contrast imaging

2018 ◽  
Author(s):  
Ruslan Belikov ◽  
Eduardo A. Bendek ◽  
Dan Sirbu ◽  
Emily Finan ◽  
Thomas Milster ◽  
...  
Keyword(s):  
High Contrast ◽  
Contrast Imaging ◽  
Wavefront Control ◽  
New Approach ◽  
High Contrast Imaging
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