On-sky performance of the QACITS pointing control technique with the Keck/NIRC2 vortex coronagraph

Author: Huby E.   Bottom M.   Femenia B.   Ngo H.   Mawet D.   Serabyn E.   Absil O.  

Publisher: Edp Sciences

E-ISSN: 1432-0746|600|issue|A46-A46

ISSN: 0004-6361

Source: Astronomy & Astrophysics, Vol.600, Iss.issue, 2017-03, pp. : A46-A46

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Abstract

Context. A vortex coronagraph is now available for high contrast observations with the Keck/NIRC2 instrument at L band. The vortex coronagraph uses a vortex phase mask in a focal plane and a Lyot stop in a downstream pupil plane to provide high contrast at small angular separations from the observed host star.

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