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SCExAO: First Results and On-Sky Performance

Published online by Cambridge University Press:  06 January 2014

Thayne Currie ,
Olivier Guyon ,
Frantz Martinache ,
Christophe Clergeon ,
Michael McElwain ,
Christian Thalmann ,
Nemanja Jovanovic ,
Garima Singh  and
Tomoyuki Kudo
Thayne Currie
Affiliation:
Department of Astronomy and Astrophysics, University of Toronto email: currie@astro.utoronto.ca
Olivier Guyon
Affiliation:
National Astronomical Observatory of Japan
Frantz Martinache
Affiliation:
National Astronomical Observatory of Japan
Christophe Clergeon
Affiliation:
National Astronomical Observatory of Japan
Michael McElwain
Affiliation:
NASA-Goddard Space Flight Center
Christian Thalmann
Affiliation:
Astronomical Institute “Anton Pannekoek”, University of Amsterdam
Nemanja Jovanovic
Affiliation:
National Astronomical Observatory of Japan
Garima Singh
Affiliation:
National Astronomical Observatory of Japan
Tomoyuki Kudo
Affiliation:
National Astronomical Observatory of Japan
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Abstract

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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.

Keywords

instrumentation: adaptive opticsdetectorsstars: planetary systems

References

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