2021
DOI: 10.48550/arxiv.2108.06403
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LUVOIR-ECLIPS closed-loop adaptive optics performance and contrast predictions

Abstract: One of the primary science goals of the Large UV/Optical/Infrared Surveyor (LUVOIR) mission concept is to detect and characterize Earth-like exoplanets orbiting nearby stars with direct imaging. The success of its coronagraph instrument ECLIPS (Extreme Coronagraph for Living Planetary Systems) depends on the ability to stabilize the wavefront from a large segmented mirror such that optical path differences are limited to tens of picometers RMS during an exposure time of a few hours. In order to relax the const… Show more

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“…Folding such vibrations simulations into a realistic model for on-the-fly wavefront sensing and control yields sensing timescales that are much shorter than our analytical estimates. 26 (4) Advanced algorithms: Recursive estimators and predictive control algorithms are also very efficient at further shortening sensing and control timescales in the context of a large segmented telescopes in space 26 or from the ground. 27 The optimal WFS gain hypothesis implies a nonrecursive estimator, and thus sophisticated algorithms can relax requirements beyond the analysis in this paper.…”
Section: Discussionmentioning
confidence: 99%
“…Folding such vibrations simulations into a realistic model for on-the-fly wavefront sensing and control yields sensing timescales that are much shorter than our analytical estimates. 26 (4) Advanced algorithms: Recursive estimators and predictive control algorithms are also very efficient at further shortening sensing and control timescales in the context of a large segmented telescopes in space 26 or from the ground. 27 The optimal WFS gain hypothesis implies a nonrecursive estimator, and thus sophisticated algorithms can relax requirements beyond the analysis in this paper.…”
Section: Discussionmentioning
confidence: 99%