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29 August 2022 Advanced wavefront sensing and control demonstration with MagAO-X
Sebastiaan Y. Haffert, Jared R. Males, Kyle Van Gorkom, Laird M. Close, Joseph D. Long, Alexander D. Hedglen, Kyohoon Ahn, Olivier Guyon, Lauren Schatz, Maggie Kautz, Jennifer Lumbres, Alexander Rodack, Justin M. Knight, He Sun, Kevin Fogarty, Kelsey Miller
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Proceedings Volume 12185, Adaptive Optics Systems VIII; 1218581 (2022) https://doi.org/10.1117/12.2630425
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada
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Abstract
The search for exoplanets is pushing adaptive optics systems on ground-based telescopes to their limits. Currently, we are limited by two sources of noise: the temporal control error and non-common path aberrations. First, the temporal control error of the AO system leads to a strong residual halo. This halo can be reduced by applying predictive control. We will show and described the performance of predictive control with the 2K BMC DM in MagAO-X. After reducing the temporal control error, we can target non-common path wavefront aberrations. During the past year, we have developed a new model-free focal-plane wavefront control technique that can reach deep contrast (<1e-7 at 5 λ/D) on MagAO-X. We will describe the performance and discuss the on-sky implementation details and how this will push MagAO-X towards imaging planets in reflected light. The new data-driven predictive controller and the focal plane wavefront controller will be tested on-sky in April 2022.
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Sebastiaan Y. Haffert, Jared R. Males, Kyle Van Gorkom, Laird M. Close, Joseph D. Long, Alexander D. Hedglen, Kyohoon Ahn, Olivier Guyon, Lauren Schatz, Maggie Kautz, Jennifer Lumbres, Alexander Rodack, Justin M. Knight, He Sun, Kevin Fogarty, and Kelsey Miller "Advanced wavefront sensing and control demonstration with MagAO-X", Proc. SPIE 12185, Adaptive Optics Systems VIII, 1218581 (29 August 2022); https://doi.org/10.1117/12.2630425
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KEYWORDS
Wavefront sensors
Adaptive optics
Planets
Coronagraphy
Autoregressive models
Exoplanets
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