AO4ELT5 Proceedings

Focal plane complex wavefront sensing with coronagraphic phase diversity on the THD2 bench

Herscovici-Schiller, Oliver (ONERA − The French Aerospace Lab), Mugnier, Laurent M. (ONERA − The French Aerospace Lab), Baudoz, Pierre (LÉSIA, CNRS, Observatoire de Paris, Univ. Paris Diderot, UPMC), Galicher, Raphaël (LÉSIA, CNRS, Observatoire de Paris, Univ. Paris Diderot, UPMC), Sauvage, Jean-François (ONERA − The French Aerospace Lab and Aix-Marseille Université, CNRS, Laboratoire d’Astrophysique de Marseille UMR 7326), Paul, Baptiste (ONERA − The French Aerospace Lab at the time of his contribution, now with Thales Alenia Space)

In this article, we study the extension of COFFEE to perform an estimation of amplitude aberration from three focal plane images ; and we perform an experimental validation of pupil amplitude reconstruction with COFFEE in the very high, space-like contrast conditions of the THD2 bench of Observatoire de Paris.

DOI: 10.26698/AO4ELT5.0063- Proceeding PDF

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