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9 September 2019 Developing linear dark-field control for exoplanet direct imaging in the laboratory and on ground-based telescopes
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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.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thayne Currie, Eugene Pluzhnik, Ruslan Belikov, and Olivier Guyon "Developing linear dark-field control for exoplanet direct imaging in the laboratory and on ground-based telescopes", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 1111722 (9 September 2019); https://doi.org/10.1117/12.2529549
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