The subaru coronagraphic extreme AO (SCExAO) system: Wavefront control and detection of exoplanets with coherent light modulation in the focal plane

Olivier Guyon, Frantz Martinache, Vincent Garrel, Frederic Vogt, Kaito Yokochi, Takashi Yoshikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

31 Citations (Scopus)

Abstract

The Subaru Coronagraphic Extreme-AO (SCExAO) system is designed for high contrast coronagraphic imaging at small angular separations, and is scheduled to see first light on the Subam Telescope in early 2011. The wavefront control architecture for SCExAO is optimized for scattered light control and calibration at small angular separations, and is described in this paper. Key subsystems for the SCExAO wavefront control architecture have been successfully demonstrated, and we report results from these tests and discuss their role in the SCExAO system. Among these subsystems, a technique which can calibrate and remove static and slow speckles which traditionally limit high contrast detections is discussed. A visible light lab prototype system at Subam Telescope recently demonstrated speckle halo reduction to 2e-7 contrast within 2 λ/D, and removal of static coherent speckles to 3e-9 contrast.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7736
EditionPART 1
DOIs
StatePublished - 2010
Externally publishedYes
EventAdaptive Optics Systems II - San Diego, CA, United States
Duration: Jun 27 2010Jul 2 2010

Other

OtherAdaptive Optics Systems II
CountryUnited States
CitySan Diego, CA
Period6/27/107/2/10

Fingerprint

Exoplanets
Light modulation
light modulation
coherent light
extrasolar planets
Wavefronts
Speckle
Focal Plane
Wave Front
Extremes
Modulation
Telescopes
Telescope
Subsystem
telescopes
High Contrast Imaging
Calibration
Imaging techniques
halos
prototypes

Keywords

  • Adaptive optics
  • Coronagraphy
  • Exoplanets

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Guyon, O., Martinache, F., Garrel, V., Vogt, F., Yokochi, K., & Yoshikawa, T. (2010). The subaru coronagraphic extreme AO (SCExAO) system: Wavefront control and detection of exoplanets with coherent light modulation in the focal plane. In Proceedings of SPIE - The International Society for Optical Engineering (PART 1 ed., Vol. 7736). [773624] https://doi.org/10.1117/12.857878

The subaru coronagraphic extreme AO (SCExAO) system : Wavefront control and detection of exoplanets with coherent light modulation in the focal plane. / Guyon, Olivier; Martinache, Frantz; Garrel, Vincent; Vogt, Frederic; Yokochi, Kaito; Yoshikawa, Takashi.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7736 PART 1. ed. 2010. 773624.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Guyon, O, Martinache, F, Garrel, V, Vogt, F, Yokochi, K & Yoshikawa, T 2010, The subaru coronagraphic extreme AO (SCExAO) system: Wavefront control and detection of exoplanets with coherent light modulation in the focal plane. in Proceedings of SPIE - The International Society for Optical Engineering. PART 1 edn, vol. 7736, 773624, Adaptive Optics Systems II, San Diego, CA, United States, 6/27/10. https://doi.org/10.1117/12.857878
Guyon O, Martinache F, Garrel V, Vogt F, Yokochi K, Yoshikawa T. The subaru coronagraphic extreme AO (SCExAO) system: Wavefront control and detection of exoplanets with coherent light modulation in the focal plane. In Proceedings of SPIE - The International Society for Optical Engineering. PART 1 ed. Vol. 7736. 2010. 773624 https://doi.org/10.1117/12.857878
Guyon, Olivier ; Martinache, Frantz ; Garrel, Vincent ; Vogt, Frederic ; Yokochi, Kaito ; Yoshikawa, Takashi. / The subaru coronagraphic extreme AO (SCExAO) system : Wavefront control and detection of exoplanets with coherent light modulation in the focal plane. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7736 PART 1. ed. 2010.
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