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Proceedings Paper • new

SCExAO, an instrument with a dual purpose: perform cutting-edge science and develop new technologies
Author(s): Julien Lozi; Olivier Guyon; Nemanja Jovanovic; Sean Goebel; Prashant Pathak; Nour Skaf; Ananya Sahoo; Barnaby Norris; Frantz Martinache; Mamadou N'Diaye; Ben Mazin; Alex B. Walter; Peter Tuthill; Tomoyuki Kudo; Hajime Kawahara; Takayuki Kotani; Michael Ireland; Nick Cvetojevic; Elsa Huby; Sylvestre Lacour; Sébastien Vievard; Tyler D. Groff; Jeffrey K. Chilcote; Jeremy Kasdin; Justin Knight; Frans Snik; David Doelman; Yosuke Minowa; Christophe Clergeon; Naruhisa Takato; Motohide Tamura; Thayne Currie; Hideki Takami; Masa Hayashi
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Paper Abstract

The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is an extremely modular high- contrast instrument installed on the Subaru telescope in Hawaii. SCExAO has a dual purpose. Its position in the northern hemisphere on a 8-meter telescope makes it a prime instrument for the detection and characterization of exoplanets and stellar environments over a large portion of the sky. In addition, SCExAO’s unique design makes it the ideal instrument to test innovative technologies and algorithms quickly in a laboratory setup and subsequently deploy them on-sky. SCExAO benefits from a first stage of wavefront correction with the facility adaptive optics AO188, and splits the 600-2400 nm spectrum towards a variety of modules, in visible and near infrared, optimized for a large range of science cases. The integral field spectrograph CHARIS, with its J, H or K-band high-resolution mode or its broadband low-resolution mode, makes SCExAO a prime instrument for exoplanet detection and characterization. Here we report on the recent developments and scientific results of the SCExAO instrument. Recent upgrades were performed on a number of modules, like the visible polarimetric module VAMPIRES, the high-performance infrared coronagraphs, various wavefront control algorithms, as well as the real-time controller of AO188. The newest addition is the 20k-pixel Microwave Kinetic Inductance Detector (MKIDS) Exoplanet Camera (MEC) that will allow for previously unexplored science and technology developments. MEC, coupled with novel photon-counting speckle control, brings SCExAO closer to the final design of future high-contrast instruments optimized for Giant Segmented Mirror Telescopes (GSMTs).

Paper Details

Date Published: 13 July 2018
PDF: 12 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 1070359 (13 July 2018); doi: 10.1117/12.2314282
Show Author Affiliations
Julien Lozi, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Olivier Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
College of Optical Sciences, The Univ. of Arizona (United States) and Jet Propulsion Lab. (United States)
Astrobiology Ctr., National Institutes of Natural Sciences (Japan)
Nemanja Jovanovic, Caltech (United States)
Sean Goebel, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Institute for Astronomy, Univ. of Hawaii (United States)
Prashant Pathak, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Sokendai, Graduate Univ. for Advanced Studies (Japan)
Nour Skaf, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Ananya Sahoo, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Sokendai, Graduate Univ. for Advanced Studies (Japan)
Barnaby Norris, Macquarie Univ. (Australia)
Frantz Martinache, Univ. Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Lab. Lagrange (France)
Mamadou N'Diaye, Univ. Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Lab. Lagrange (France)
Ben Mazin, Univ. of California, Santa Barbara (United States)
Alex B. Walter, Univ. of California, Santa Barbara (United States)
Peter Tuthill, Macquarie Univ. (Australia)
Tomoyuki Kudo, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Hajime Kawahara, The Univ. of Tokyo (Japan)
Takayuki Kotani, National Astronomical Observatory of Japan (Japan)
Michael Ireland, The Australian National Univ. (Australia)
Nick Cvetojevic, LESIA, Observatoire de Paris (France)
Elsa Huby, LESIA, Observatoire de Paris (France)
Sylvestre Lacour, LESIA, Observatoire de Paris (France)
Sébastien Vievard, Subaru Telescope, National Astronomical Observatory of Japan (France)
Astrobiology Ctr., National Institutes of Natural Sciences (Japan)
LESIA, Observatoire de Paris (France)
Tyler D. Groff, NASA Goddard Space Flight Ctr. (United States)
Jeffrey K. Chilcote, Stanford Univ. (United States)
Jeremy Kasdin, Princeton Univ. (United States)
Justin Knight, College of Optical Sciences, The Univ. of Arizona (United States)
Frans Snik, Leiden Observatory, Leiden Univ. (Netherlands)
David Doelman, Leiden Observatory, Leiden Univ. (Netherlands)
Yosuke Minowa, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Christophe Clergeon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Naruhisa Takato, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Motohide Tamura, National Astronomical Observatory of Japan (Japan)
Thayne Currie, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Hideki Takami, National Astronomical Observatory of Japan (Japan)
Masa Hayashi, National Astronomical Observatory of Japan (Japan)


Published in SPIE Proceedings Vol. 10703:
Adaptive Optics Systems VI
Laird M. Close; Laura Schreiber; Dirk Schmidt, Editor(s)

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