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Status of the SCExAO instrument: recent technology upgrades and path to a system-level demonstrator for PSI

Lozi, Julien and Guyon, Olivier and Vievard, Sébastien and Sahoo, Ananya and Deo, Vincent and Jovanovic, Nemanja and Norris, Barnaby and Martinod, Marc-Antoine and Mazin, Benjamin and Walter, Alex and Fruitwala, Neelay and Steiger, Sarah and Davis, Kristina K. and Tuthill, Peter and Kudo, Tomoyuki and Kawahara, Hajime and Kotani, Takayuki and Ireland, Michael and Anagnos, Theodoros and Schwab, Chrstian and Cvetojevic, Nick and Huby, Elsa and Lacour, Sylvestre and Barjot, Kevin and Groff, Tyler D. and Chilcote, Jeffrey and Kasdin, N. Jeremy and Martinache, Frantz and Laugier, Romain and N'Diaye, Mamadou and Knight, Justin M. and Males, Jared and Bos, Steven P. and Snik, Frans and Doelman, David S. and Miller, Kelsey and Bendek, Eduardo and Belikov, Ruslan and Pluzhnik, Eugene and Currie, Thayne and Kuzuhara, Masayuki and Uyama, Taichi and Nishikawa, Jun and Murakami, Naoshi and Hashimoto, Jun and Minowa, Yosuke and Clergeon, Christophe S. and Ono, Yoshito and Takato, Naruhisa and Tamura, Motohide and Takami, Hideki and Hayashi, Masa (2020) Status of the SCExAO instrument: recent technology upgrades and path to a system-level demonstrator for PSI. In: Adaptive Optics Systems VII. Proceedings of SPIE. No.11448. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114480N. ISBN 9781510636835.

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The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is a high-contrast imaging system installed at the 8-m Subaru Telescope on Maunakea, Hawaii. Due to its unique evolving design, SCExAO is both an instrument open for use by the international scientific community, and a testbed validating new technologies, which are critical to future high-contrast imagers on Giant Segmented Mirror Telescopes (GSMTs). Through multiple international collaborations over the years, SCExAO was able to test the most advanced technologies in wavefront sensors, real-time control with GPUs, low-noise high frame rate detectors in the visible and infrared, starlight suppression techniques or photonics technologies. Tools and interfaces were put in place to encourage collaborators to implement their own hardware and algorithms, and test them on-site or remotely, in laboratory conditions or on-sky. We are now commissioning broadband coronagraphs, the Microwave Kinetic Inductance Detector (MKID) Exoplanet Camera (MEC) for high-speed speckle control, as well as a C-RED ONE camera for both polarization differential imaging and IR wavefront sensing. New wavefront control algorithms are also being tested, such as predictive control, multi-camera machine learning sensor fusion, and focal plane wavefront control. We present the status of the SCExAO instrument, with an emphasis on current collaborations and recent technology demonstrations. We also describe upgrades planned for the next few years, which will evolve SCExAO —and the whole suite of instruments on the IR Nasmyth platform of the Subaru Telescope— to become a system-level demonstrator of the Planetary Systems Imager (PSI), the high-contrast instrument for the Thirty Meter Telescope (TMT).

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Lozi, Julien0000-0002-3047-1845
Guyon, Olivier0000-0002-1097-9908
Vievard, Sébastien0000-0003-4018-2569
Sahoo, Ananya0000-0003-2806-1254
Jovanovic, Nemanja0000-0001-5213-6207
Norris, Barnaby0000-0002-8352-7515
Mazin, Benjamin0000-0003-0526-1114
Steiger, Sarah0000-0002-4787-3285
Davis, Kristina K.0000-0001-5587-845X
Tuthill, Peter0000-0001-7026-6291
Kudo, Tomoyuki0000-0002-9294-1793
Kawahara, Hajime0000-0003-3309-9134
Ireland, Michael0000-0002-6194-043X
Cvetojevic, Nick0000-0002-7465-4176
Lacour, Sylvestre0000-0002-6948-0263
Groff, Tyler D.0000-0001-5978-3247
Chilcote, Jeffrey0000-0001-6305-7272
Kasdin, N. Jeremy0000-0002-6963-7486
Martinache, Frantz0000-0003-1180-4138
N'Diaye, Mamadou0000-0002-1721-3294
Snik, Frans0000-0003-1946-7009
Bendek, Eduardo0000-0002-9408-8925
Currie, Thayne0000-0002-7405-3119
Kuzuhara, Masayuki0000-0002-4677-9182
Uyama, Taichi0000-0002-6879-3030
Hashimoto, Jun0000-0002-3053-3575
Tamura, Motohide0000-0002-6510-0681
Additional Information:© 2020 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, #19H00703 & #19H00695), the Astrobiology Center of the National Institutes of Natural Sciences, Japan, the Mt Cuba Foundation and the director's 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
Japan Society for the Promotion of Science (JSPS)19H00703
Japan Society for the Promotion of Science (JSPS)19H00695
National Institutes of Natural Sciences of JapanUNSPECIFIED
Mt. Cuba Astronomical FoundationUNSPECIFIED
Subaru TelescopeUNSPECIFIED
European Research Council (ERC)683029
Subject Keywords:Manuscript format, template, SPIE Proceedings, LaTeX
Series Name:Proceedings of SPIE
Issue or Number:11448
Record Number:CaltechAUTHORS:20210104-151206059
Persistent URL:
Official Citation:Julien Lozi, Olivier Guyon, Sébastien Vievard, Ananya Sahoo, Vincent Deo, Nemanja Jovanovic, Barnaby Norris, Marc-Antoine Martinod, Ben Mazin, Alex Walter, Neelay Fruitwala, Sarah Steiger, Kristina Davis, Peter Tuthill, Tomoyuki Kudo, Hajime Kawahara, Takayuki Kotani, Michael Ireland, Theodoros Anagnos, Chrstian Schwab, Nick Cvetojevic, Elsa Huby, Sylvestre Lacour, Kevin Barjot, Tyler D. Groff, Jeffrey Chilcote, Jeremy Kasdin, Frantz Martinache, Romain Laugier, Mamadou N'Diaye, Justin Knight, Jared Males, Steven Bos, Frans Snik, David Doelman, Kelsey Miller, Eduardo Bendek, Ruslan Belikov, Eugene Pluzhnik, Thayne Currie, Masayuki Kuzuhara, Taichi Uyama, Jun Nishikawa, Naoshi Murakami, Jun Hashimoto, Yosuke Minowa, Christophe Clergeon, Yoshito Ono, Naruhisa Takato, Motohide Tamura, Hideki Takami, and Masa Hayashi "Status of the SCExAO instrument: recent technology upgrades and path to a system-level demonstrator for PSI", Proc. SPIE 11448, Adaptive Optics Systems VII, 114480N (13 December 2020);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107297
Deposited By: Tony Diaz
Deposited On:05 Jan 2021 00:01
Last Modified:16 Nov 2021 19:01

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