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    Validating advanced wavefront control techniques on the SCExAO testbed/instrument

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    Author
    Guyon, Olivier
    Lozi, Julien
    Vievard, Sébastien
    Belikov, Ruslan
    Bendek, Eduardo
    Bos, Steven P.
    Currie, Thayne
    Deo, Vincent
    Fitzgerald, Michael
    Gratadour, Damien
    Groff, Tyler D.
    Jovanovic, Nemanja
    Kawahara, Hajime
    Kotani, Takayuki
    Kudo, Tomoyuki cc
    Lopez, Coline
    Ltaief, Hatem
    Males, Jared R. cc
    Martinache, Frantz
    Martinod, Marc-Antoine
    Mazin, Benjamin
    Miller, Kelsey L.
    Norris, Barnaby
    Ndiaye, Mamadou
    Pluzhnyk, Eugene
    Sahoo, Ananya
    Sevin, Arnaud
    Skaf, Nour
    Snik, Frans
    Tamura, Motohide
    Wong, Alison
    Show allShow less
    Affiliation
    Steward Observatory, University of Arizona
    College of Optical Sciences, University of Arizona
    Issue Date
    2020-12-13
    Keywords
    Adaptive Optics
    Atmospheric Turbulence
    High Contrast Imaging
    Wavefront Sensing
    
    Metadata
    Show full item record
    Publisher
    SPIE
    Citation
    Guyon, O., Lozi, J., Vievard, S., Belikov, R., Bendek, E., Bos, S., ... & Wong, A. (2020, December). Validating advanced wavefront control techniques on the SCExAO testbed/instrument. In Adaptive Optics Systems VII (Vol. 11448, p. 114481Z). International Society for Optics and Photonics.
    Journal
    Proceedings of SPIE - The International Society for Optical Engineering
    Rights
    © 2020 SPIE.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) serves both a science instrument in operation, and a prototyping platform for integrating and validating advanced wavefront control techniques. It provides a modular hardware and software environment optimized for flexible prototyping, reducing the time from concept formulation to on-sky operation and validation. This approach also enables external research group to deploy and test new hardware and algorithms. The hardware architecture allows for multiple subsystems to run concurrently, sharing starlight by means of dichroics. The multiplexing lends itself to running parallel experiments simultaneously, and developing sensor fusion approaches for increased wavefront sensing sensitivity and reliability. Thanks to a modular realtime control software architecture designed around the CACAO package, users can deploy WFS/C routines with full low-latency access to all cameras data streams. Algorithms can easily be shared with other cacao-based AO systems at Magellan (MagAO-X) and Keck. We highlight recent achievements and ongoing activities that are particularly relevant to the development of high contrast imaging instruments for future large ground-based telescopes (ELT, TMT, GMT) and space telescopes (HabEx, LUVOIR). These include predictive control and sensor fusion, PSF reconstruction from AO telemetry, integrated coronagraph/WFS development, focal plane speckle control with photon counting MKIDS camera, and fiber interferometry. We also describe upcoming upgrades to the WFS/C architecture: a new 64x64 actuator first stage DM, deployment of a beam switcher for concurrent operation of SCExAO with other science instruments, and the ULTIMATE upgrade including deployment of multiple LGS WFSs and an adaptive secondary mirror. © 2020 SPIE.
    ISSN
    0277-786X
    DOI
    10.1117/12.2562723
    Version
    Final published version
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2562723
    Scopus Count
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    UA Faculty Publications

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