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Advanced wavefront sensing and control demonstration with MagAO-X

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arxiv 2208.07334 v1 pith:T7QH6XXT submitted 2022-08-15 astro-ph.IM

Advanced wavefront sensing and control demonstration with MagAO-X

classification astro-ph.IM
keywords controlmagao-xwavefrontwillerrorpredictivetemporalaberrations
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 $\lambda$/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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