Author(s): O. Guyon, J. Lozi, S. Vievard, A. Sahoo, T. Currie, T. Kudo, C. Clergeon, Y. Minowa, Y. Ono, E. Mieda, Subaru Telescope, Hilo, Hawaii, UNITED STATES|O. Guyon, J. Males, J. Knight, University of Arizona, Tucson, Arizona, UNITED STATES|N. Jovanovic, D. Mawet, Caltech, Pasadena, California, UNITED STATES|P. Pathak, ESO, Garching, California, GERMANY|F. Martinache, Observatoire de la cote d'Azur, Nice, California, FRANCE|G. Singh, N. Cvetojevic, S. Lacour, E. Huby, A. Sevin, D. Gratadour, Observatoire de Paris, Meudon, California, FRANCE|B. Mazin, A. Walter, T. Brandt, UC Santa Barbara, Santa Barbara, California, UNITED STATES|B. Norris, A. Wong, P. Tuthill, T. Lagadec, University of Sydney, Sydney, New South Wales, AUSTRALIA|M. Ireland, Australian National University, Canberra, Australian Capital Territory, AUSTRALIA|C. Schwab, T. Feger, Macquarie University, Sydney, New South Wales, AUSTRALIA|T. Groff, NASA GSFC, Greenbelt, Maryland, UNITED STATES|J. Chilcote, University of Notre Dame, Notre Dame, Indiana, UNITED STATES|D. Hall, S. Goebel, University of Hawaii, Hilo, Hawaii, UNITED STATES|F. Snik, D. Doelman, S. Bos, University of Leiden, Leiden, Hawaii, NETHERLANDS|H. Kawahara, Z. Jin, University of Tokyo, Tokyo, Hawaii, JAPAN|M. Tamura, T. Kotani, Astrobiology Center, Tokyo, Hawaii, JAPAN|R. Belikov, E. Bendek, NASA Ames, Mountain View, California, UNITED STATES|H. Ltaief, KAUST, Thuwal, California, SAUDI ARABIA|N. Murakami, Hokkaido University, Hokkaido, California, JAPAN|J. Kasdin, Princeton University, Princeton, New Jersey, UNITED STATES|
Institution(s): 1. Subaru Telescope, Hilo, HI, United States. 2. University of Arizona, Tucson, AZ, United States. 3. Caltech, Pasadena, CA, United States. 4. ESO, Garching, Germany. 5. Observatoire de la cote d'Azur, Nice, France. 6. Observatoire de Paris, Meudon, France. 7. UC Santa Barbara, Santa Barbara, CA, United States. 8. University of Sydney, Sydney, NSW, Australia. 9. Australian National University, Canberra, ACT, Australia. 10. Macquarie University, Sydney, NSW, Australia. 11. NASA GSFC, Greenbelt, MD, United States. 12. University of Notre Dame, Notre Dame, IN, United States. 13. University of Hawaii, Hilo, HI, United States. 14. University of Leiden, Leiden, Netherlands. 15. University of Tokyo, Tokyo, Japan. 16. Astrobiology Center, Tokyo, Japan. 17. NASA Ames, Mountain View, CA, United States. 18. KAUST, Thuwal, Saudi Arabia. 19. Hokkaido University, Hokkaido, Japan. 20. Princeton University, Princeton, NJ, United States.
Contributing team(s): (none)
The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system, currently in science operation on the Subaru Telescope, combines high performance wavefront control and starlight suppression to image exoplanets and disks. In addition to its flagship science cameras, CHARIS (near-IR spectro-imaging) and VAMPIRES (visible polarimetric imaging), new capabilities are being deployed, including advanced small inner working angle coronagraphy, high frame rate low noise imaging, near-IR polarimetric imaging, interferometric imaging/nulling and high resolution diffraction-limited spectroscopy. A significant part of SCExAO's development and performance improvements is realized through wavefront control algorithms (focal plane wavefront control, sensor fusion, predictive control, multi-star WFC) implemented through the cacao software package and enabled by advances in detector technologies (photon counting with MKIDs camera) and modern computer hardware. Further improvements are also expected from the use of real-time WFS telemetry to enhance removal of residual starlight in post-processing. Much of SCExAO's development activities are aimed at direct imaging of giant planets in reflected light with current large telescopes, and imaging/spectroscopy of habitable planets with future giant segmented mirror telescopes.