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Title:
SCExAO: First Results and On-Sky Performance
Authors:
Currie, Thayne; Guyon, Olivier; Martinache, Frantz; Clergeon, Christophe; McElwain, Michael; Thalmann, Christian; Jovanovic, Nemanja; Singh, Garima; Kudo, Tomoyuki
Affiliation:
AA(Department of Astronomy and Astrophysics, University of Toronto ), AB(National Astronomical Observatory of Japan), AC(National Astronomical Observatory of Japan), AD(National Astronomical Observatory of Japan), AE(NASA-Goddard Space Flight Center), AF(Astronomical Institute ``Anton Pannekoek'', University of Amsterdam), AG(National Astronomical Observatory of Japan), AH(National Astronomical Observatory of Japan), AI(National Astronomical Observatory of Japan)
Publication:
Exploring the Formation and Evolution of Planetary Systems, Proceedings of the International Astronomical Union, IAU Symposium, Volume 299, pp. 34-35
Publication Date:
01/2014
Origin:
CUP
Keywords:
instrumentation: adaptive optics, detectors, stars: planetary systems,
Abstract Copyright:
(c) 2014: Copyright © International Astronomical Union 2013
DOI:
10.1017/S1743921313007746
Bibliographic Code:
2014IAUS..299...34C

Abstract

We present new on-sky results for the Subaru Coronagraphic Extreme Adaptive Optics imager (SCExAO) verifying and quantifying the contrast gain enabled by key components: the closed-loop coronagraphic low-order wavefront sensor (CLOWFS) and focal plane wavefront control (``speckle nulling''). SCExAO will soon be coupled with a high-order, Pyramid wavefront sensor which will yield > 90% Strehl ratio and enable 106-107 contrast at small angular separations allowing us to image gas giant planets at solar system scales. Upcoming instruments like VAMPIRES, FIRST, and CHARIS will expand SCExAO's science capabilities.

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