@inproceedings{7e3e84311b0e459f966c660b8fa0afb2,
title = "On-sky speckle nulling with the Subaru Coronagraphic Extreme AO (SCExAO) instrument",
abstract = "Contrast limit for the direct imaging of extrasolar planets from ground based adaptive optics (AO) observations is set by the presence of static and slow-varying aberrations in the optical path that lead to the science instrument. To complement the otherwise highly successful angular differential imaging (ADI) technique toward small angular separation, we propose to employ additional wavefront control to modulate the diffraction. This flexible approach introduces enough diversity to discriminate genuine structures of the observed target from spurious diffraction features in the image. One possible implementation of such form of coherence differential imaging (CDI) is a speckle nulling algorithm that iteratively suppresses diffraction features inside a region constrained by the number of active elements of the deformable mirror modulating the wavefront, and the coronagraph. This paper presents on-sky results obtained with this approach, on the Subaru Coronagraphic Extreme AO (SCExAO) instrument.",
author = "Frantz Martinache and Olivier Guyon and Nemanja Jovanovic and Christophe Clergeon and Garima Singh and Tomoyuki Kudo",
note = "Publisher Copyright: {\textcopyright} 2014 SPIE.; Adaptive Optics Systems IV ; Conference date: 22-06-2014 Through 27-06-2014",
year = "2014",
doi = "10.1117/12.2057298",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jean-Pierre Veran and Enrico Marchetti and Close, {Laird M.}",
booktitle = "Adaptive Optics Systems IV",
}