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BENARD , H.

Last name: BENARD

First name: H.

2022 (v1)

Journal article

Metadata-only

Low-order wavefront control using a Zernike sensor through Lyot coronagraphs for exoplanet imaging. Blind stabilization of an image dark hole

Pourcelot, R. N'Diaye, M. Por, E. H.

Context. The combination of large segmented space telescopes, coronagraphy, and wavefront control methods is a promising solution for producing a dark hole (DH) region in the coronagraphic image of an observed star in order to study planetary companions. The thermal and mechanical evolution of such a high-contrast instrumental setup leads to...

Uploaded on: December 4, 2022
April 2023 (v1)

Journal article

Metadata-only

Low-order wavefront control using a Zernike sensor through Lyot coronagraphs for exoplanet imaging. II. Concurrent operation with stroke minimization

Pourcelot, R. Por, E. N'Diaye, Mamadou

Context . Wavefront sensing and control (WFSC) will play a key role in improving the stability of future large segmented space telescopes while relaxing the thermo-mechanical constraints on the observatory structure. Coupled with a coronagraph to reject the light of an observed bright star, WFSC enables the generation and stabilisation of a...

Uploaded on: November 25, 2023