Laboratory testing of multi-star wavefront control with a coronagraph

Ruslan Belikov; Dan Sirbu; Eduardo Bendek; Eugene Pluzhnik; Garreth Ruane; A.J. Riggs; Julien Lozi; Olivier Guyon

doi:10.1117/12.2563109

13 December 2020 Laboratory testing of multi-star wavefront control with a coronagraph

Ruslan Belikov, Dan Sirbu, Eduardo Bendek, Eugene Pluzhnik, Garreth Ruane, A.J. Riggs, Julien Lozi, Olivier Guyon

Proceedings Volume 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave; 114434B (2020) https://doi.org/10.1117/12.2563109
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

We present the continued progress and laboratory results advancing the technology readiness of Multi-Star Wavefront Control (MSWC), a method to directly image planets and disks in multi-star systems such as Alpha Centauri. Because of the ubiquity of multistar systems, this method increases the science yield of many missions and concepts such as WFIRST, HabEx, LUVOIR, and potentially enables the detection of Earth-like planets (if they exist) around our nearest neighbor star, Alpha Centauri. We report on lab demonstrations of MSWC, including one at the Ames Coronagraph Experiment (ACE) laboratory, as well as with the SCExAO instrument. Our demonstrations include both sub- and super-Nyquist versions of MSWC, showing that active suppression of light from a binary is possible even when the star separation exceeds the outer outer working angle of the deformable mirror. We also use standard single-star speckle suppression techniques to isolate and quantify the gains of MSWC.

Citation Download Citation

Ruslan Belikov, Dan Sirbu, Eduardo Bendek, Eugene Pluzhnik, Garreth Ruane, A.J. Riggs, Julien Lozi, and Olivier Guyon "Laboratory testing of multi-star wavefront control with a coronagraph", Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 114434B (13 December 2020); https://doi.org/10.1117/12.2563109

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