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Developing linear dark-field control for exoplanet direct imaging in the laboratory and on ground-based telescopes
Author(s): Thayne Currie; Eugene Pluzhnik; Ruslan Belikov; Olivier Guyon
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Paper Abstract

Imaging rocky planets in reflected light, a key focus of future NASA missions and ELTs, requires advanced wavefront control to maintain a deep, temporally correlated null of stellar halo at just several diffraction beam widths. We discuss development of Linear Dark Field Control (LDFC) to achieve this aim. We describe efforts to test spatial LDFC in a laboratory setting for the first time, using the Ames Coronagraph Experiment (ACE) testbed. Our preliminary results indicate that spatial LDFC is a promising method focal-plane wavefront control method capable of maintaining a static dark hole, at least at contrasts relevant for imaging mature planets with 30m-class telescopes.

Paper Details

Date Published: 9 September 2019
PDF: 10 pages
Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 1111722 (9 September 2019); doi: 10.1117/12.2529549
Show Author Affiliations
Thayne Currie, NASA Ames Research Ctr. (United States)
Subaru Telescope (United States)
Eugene Pluzhnik, NASA Ames Research Ctr. (United States)
Bay Area Environmental Research Institute (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)
Olivier Guyon, Subaru Telescope, NAOJ (United States)


Published in SPIE Proceedings Vol. 11117:
Techniques and Instrumentation for Detection of Exoplanets IX
Stuart B. Shaklan, Editor(s)

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