Visible-light high-contrast imaging polarimetry at Subaru

Miles Lucas; Barnaby Norris; Olivier Guyon; Michael Bottom; Vincent Deo; Sébastien Vievard; Julien Lozi; Kyohoon Ahn; Jaren Ashcraft; Thayne Currie; David Doelman; Tomoyuki Kudo; Lucinda Lilley; Lucie Leboulleux; Maxwell Millar-Blanchaer; Boris Safonov; Peter Tuthill; Taichi Uyama; Aidan Walk; Manxuan Zhang

doi:10.1117/12.3016188

20 August 2024 Visible-light high-contrast imaging polarimetry at Subaru

Miles Lucas, Barnaby Norris, Olivier Guyon, Michael Bottom, Vincent Deo, Sébastien Vievard, Julien Lozi, Kyohoon Ahn, Jaren Ashcraft, Thayne Currie, David Doelman, Tomoyuki Kudo, Lucinda Lilley, Lucie Leboulleux, Maxwell Millar-Blanchaer, Boris Safonov, Peter Tuthill, Taichi Uyama, Aidan Walk, Manxuan Zhang

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130962Z (2024) https://doi.org/10.1117/12.3016188
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

We present upgrades to the visible-light (600nm to 800 nm) high-contrast imaging polarimeter, VAMPIRES, installed on the Subaru Coronagraphic Extreme Adaptive Optics instrument (SCExAO). These upgrades included low read noise, high dynamic range qCMOS detectors, a novel dichroic-based multiband imaging optic for spectral differential imaging, a suite of classic Lyot coronagraphs, and an achromatic fast polarization modulator. VAMPIRES is capable of diffraction-limited imaging (17 mas to 22 mas angular resolution) and achieves Strehl ratios up to ∼60% with 5σ coronagraphic contrast of 10^-4 at 0.1′′ and 10^-6 at >0.4′′. We highlight commissioning results from HD 169142, R Aqr, Neptune, and HD 1160B.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Miles Lucas, Barnaby Norris, Olivier Guyon, Michael Bottom, Vincent Deo, Sébastien Vievard, Julien Lozi, Kyohoon Ahn, Jaren Ashcraft, Thayne Currie, David Doelman, Tomoyuki Kudo, Lucinda Lilley, Lucie Leboulleux, Maxwell Millar-Blanchaer, Boris Safonov, Peter Tuthill, Taichi Uyama, Aidan Walk, and Manxuan Zhang "Visible-light high-contrast imaging polarimetry at Subaru", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130962Z (20 August 2024); https://doi.org/10.1117/12.3016188

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