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SCExAO, an instrument with a dual purpose: perform cutting-edge science and develop new technologies

Lozi, Julien and Jovanovic, Nemanja (2018) SCExAO, an instrument with a dual purpose: perform cutting-edge science and develop new technologies. In: Adaptive Optics Systems VI. Proceedings of SPIE. No.10703. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 1070359. ISBN 9781510619593.

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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).

Item Type:Book Section
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Lozi, Julien0000-0002-3047-1845
Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). The development of SCExAO was supported by the Japan Society for the Promotion of Science (Grant-in-Aid for Research #23340051, #26220704 & #23103002), the Astrobiology Center of the National Institutes of Natural Sciences, Japan, the Mt Cuba Foundation and the directors contingency fund at Subaru Telescope. F. Martinache’s work is supported by the ERC award CoG - 683029. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.
Funding AgencyGrant Number
Japan Society for the Promotion of Science (JSPS)23340051
Japan Society for the Promotion of Science (JSPS)26220704
Japan Society for the Promotion of Science (JSPS)23103002
National Institutes of Natural Sciences of JapanUNSPECIFIED
Mt. Cuba Astronomical FoundationUNSPECIFIED
Subaru TelescopeUNSPECIFIED
European Research Council (ERC)683029
Subject Keywords:Extreme Adaptive Optics, Coronagraphy, High-Contrast Imaging, Pyramid Wavefront Sensor, Polarimetry, MKID, Single-Mode Fiber Injection
Series Name:Proceedings of SPIE
Issue or Number:10703
Record Number:CaltechAUTHORS:20181204-074437127
Persistent URL:
Official Citation:Julien Lozi, Julien Lozi, Olivier Guyon, Olivier Guyon, Nemanja Jovanovic, Nemanja Jovanovic, Sean Goebel, Sean Goebel, Prashant Pathak, Prashant Pathak, Nour Skaf, Nour Skaf, Ananya Sahoo, Ananya Sahoo, Barnaby Norris, Barnaby Norris, Frantz Martinache, Frantz Martinache, Mamadou N'Diaye, Mamadou N'Diaye, Ben Mazin, Ben Mazin, Alex B. Walter, Alex B. Walter, Peter Tuthill, Peter Tuthill, Tomoyuki Kudo, Tomoyuki Kudo, Hajime Kawahara, Hajime Kawahara, Takayuki Kotani, Takayuki Kotani, Michael Ireland, Michael Ireland, Nick Cvetojevic, Nick Cvetojevic, Elsa Huby, Elsa Huby, Sylvestre Lacour, Sylvestre Lacour, Sébastien Vievard, Sébastien Vievard, Tyler D. Groff, Tyler D. Groff, Jeffrey K. Chilcote, Jeffrey K. Chilcote, Jeremy Kasdin, Jeremy Kasdin, Justin Knight, Justin Knight, Frans Snik, Frans Snik, David Doelman, David Doelman, Yosuke Minowa, Yosuke Minowa, Christophe Clergeon, Christophe Clergeon, Naruhisa Takato, Naruhisa Takato, Motohide Tamura, Motohide Tamura, Thayne Currie, Thayne Currie, Hideki Takami, Hideki Takami, Masa Hayashi, Masa Hayashi, } "SCExAO, an instrument with a dual purpose: perform cutting-edge science and develop new technologies ", Proc. SPIE 10703, Adaptive Optics Systems VI, 1070359 (13 July 2018); doi: 10.1117/12.2314282;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91417
Deposited By: Tony Diaz
Deposited On:04 Dec 2018 19:39
Last Modified:16 Nov 2021 03:41

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