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SCExAO: First Results and On-Sky PerformanceWe present new on-sky results for the Subaru Coronagraphic Extreme Adaptive Optics imager (SCExAO) verifying and quantifying the contrast gain enabled by key components: the closed-loop coronagraphic low-order wavefront sensor (CLOWFS) and focal plane wavefront control ("speckle nulling"). SCExAO will soon be coupled with a high-order, Pyramid wavefront sensor which will yield greater than 90% Strehl ratio and enable 10(exp 6) -10(exp 7) contrast at small angular separations allowing us to image gas giant planets at solar system scales. Upcoming instruments like VAMPIRES, FIRST, and CHARIS will expand SCExAO's science capabilities.
Document ID
20140010498
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
External Source(s)
doi:10.1017/S1743921313007746
Authors
Currie, Thayne (Toronto Univ. Ontario, Canada)
Guyon, Olivier (National Astronomical Observatory Tokyo, Japan)
Martinache, Frantz (National Astronomical Observatory Tokyo, Japan)
Clergeon, Christophe (National Astronomical Observatory Tokyo, Japan)
McElwain, Michael (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Thalmann, Christian (Amsterdam Univ. Netherlands)
Jovanovic, Nemanja (National Astronomical Observatory Tokyo, Japan)
Singh, Garima (National Astronomical Observatory Tokyo, Japan)
Kudo, Tomoyuki (National Astronomical Observatory Tokyo, Japan)
Date Acquired
August 6, 2014
Publication Date
June 2, 2013
Publication Information
Publication: Proceedings of the International Astronomical Union
Volume: 8
Subject Category
Astronomy
Report/Patent Number
GSFC-E-DAA-TN14828
Report Number: GSFC-E-DAA-TN14828
Meeting Information
Meeting: IAU Symposium No. 299: Exploring the Formation and Evolution of Planetary Systems
Location: Victoria, British Columbia
Country: Canada
Start Date: June 2, 2013
End Date: June 7, 2013
Sponsors: International Astronomical Union
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Subaru Coronagraphic Extreme Adaptive Optics imager (SCExAO)
closed-loop coronagraphic low-order wavefront sensor (CLOWFS)
focal plane wavefrontcontrol (speckle nulling)

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