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SCExAO: First Results and On-Sky Performance

  • Thayne Currie (a1), Olivier Guyon (a2), Frantz Martinache (a2), Christophe Clergeon (a2), Michael McElwain (a3), Christian Thalmann (a4), Nemanja Jovanovic (a2), Garima Singh (a2) and Tomoyuki Kudo (a2)...

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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References

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Currie, T., et al., 2012, Ap. Lett., 760, L32
Guyon, O., et al., 2011, in Proc. SPIE, Vol. 8149
Marois, C., et al., 2006, Ap. J, 641, 556
Martinache, F., et al., 2009, in Proc. SPIE, Vol. 7440
Martinache, F., et al., 2012a, in Proc. SPIE, Vol. 8447
Martinache, F., et al., 2012b, PASP, 124, 1288
McElwain, M., et al., 2012, in Proc. SPIE, Vol. 8446
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