Development and recent results from the Subaru coronagraphic extreme adaptive optics system

N. Jovanovic; O. Guyon; F. Martinache; C. Clergeon; G. Singh; T. Kudo; K. Newman; J. Kuhn; E. Serabyn; B. Norris; P. Tuthill; P. Stewart; E. Huby; G. Perrin; S. Lacour; S. Vievard; N. Murakami; O. Fumika; Y. Minowa; Y. Hayano; J. White; O. Lai; F. Marchis; G. Duchene; T. Kotani; J. Woillez

doi:10.1117/12.2057249

Development and recent results from the Subaru coronagraphic extreme adaptive optics system

N. Jovanovic, O. Guyon, F. Martinache, C. Clergeon, G. Singh, T. Kudo, K. Newman, J. Kuhn, E. Serabyn, B. Norris, P. Tuthill, P. Stewart, E. Huby, G. Perrin, S. Lacour, S. Vievard, N. Murakami, O. Fumika, Y. Minowa, Y. HayanoJ. White, O. Lai, F. Marchis, G. Duchene, T. Kotani, J. Woillez

Steward Observatory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Scopus citations

Abstract

The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is one of a handful of extreme adaptive optics systems set to come online in 2014. The extreme adaptive optics correction is realized by a combination of precise wavefront sensing via a non-modulated pyramid wavefront sensor and a 2000 element deformable mirror. This system has recently begun on-sky commissioning and was operated in closed loop for several minutes at a time with a loop speed of 800 Hz, on ∼150 modes. Further suppression of quasi-static speckles is possible via a process called "speckle nulling" which can create a dark hole in a portion of the frame allowing for an enhancement in contrast, and has been successfully tested on-sky. In addition to the wavefront correction there are a suite of coronagraphs on board to null out the host star which include the phase induced amplitude apodization (PIAA), the vector vortex, 8 octant phase mask, 4 quadrant phase mask and shaped pupil versions which operate in the NIR (y-K bands). The PIAA and vector vortex will allow for high contrast imaging down to an angular separation of 1 λ/D to be reached; a factor of 3 closer in than other extreme AO systems. Making use of the left over visible light not used by the wavefront sensor is VAMPIRES and FIRST. These modules are based on aperture masking interferometry and allow for sub-diffraction limited imaging with moderate contrasts of ∼100-1000:1. Both modules have undergone initial testing on-sky and are set to be fully commissioned by the end of 2014.

Original language	English (US)
Title of host publication	Ground-Based and Airborne Instrumentation for Astronomy V
Editors	Suzanne K. Ramsay, Ian S. McLean, Hideki Takami
Publisher	SPIE
ISBN (Electronic)	9780819496157
DOIs	https://doi.org/10.1117/12.2057249
State	Published - 2014
Event	Ground-Based and Airborne Instrumentation for Astronomy V - Montreal, Canada Duration: Jun 22 2014 → Jun 26 2014

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9147
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Ground-Based and Airborne Instrumentation for Astronomy V
Country	Canada
City	Montreal
Period	6/22/14 → 6/26/14

Keywords

Aperture masking interferometry
Coronagraphy
Exoplanetary science
Extreme adaptive optics
High contrast imaging
SCExAO
Small inner working angle

ASJC Scopus subject areas

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

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Jovanovic, N., Guyon, O., Martinache, F., Clergeon, C., Singh, G., Kudo, T., Newman, K., Kuhn, J., Serabyn, E., Norris, B., Tuthill, P., Stewart, P., Huby, E., Perrin, G., Lacour, S., Vievard, S., Murakami, N., Fumika, O., Minowa, Y., ... Woillez, J. (2014). Development and recent results from the Subaru coronagraphic extreme adaptive optics system. In S. K. Ramsay, I. S. McLean, & H. Takami (Eds.), Ground-Based and Airborne Instrumentation for Astronomy V [91471Q] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9147). SPIE. https://doi.org/10.1117/12.2057249

Development and recent results from the Subaru coronagraphic extreme adaptive optics system. / Jovanovic, N.; Guyon, O.; Martinache, F.; Clergeon, C.; Singh, G.; Kudo, T.; Newman, K.; Kuhn, J.; Serabyn, E.; Norris, B.; Tuthill, P.; Stewart, P.; Huby, E.; Perrin, G.; Lacour, S.; Vievard, S.; Murakami, N.; Fumika, O.; Minowa, Y.; Hayano, Y.; White, J.; Lai, O.; Marchis, F.; Duchene, G.; Kotani, T.; Woillez, J.

Ground-Based and Airborne Instrumentation for Astronomy V. ed. / Suzanne K. Ramsay; Ian S. McLean; Hideki Takami. SPIE, 2014. 91471Q (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9147).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Jovanovic, N, Guyon, O, Martinache, F, Clergeon, C, Singh, G, Kudo, T, Newman, K, Kuhn, J, Serabyn, E, Norris, B, Tuthill, P, Stewart, P, Huby, E, Perrin, G, Lacour, S, Vievard, S, Murakami, N, Fumika, O, Minowa, Y, Hayano, Y, White, J, Lai, O, Marchis, F, Duchene, G, Kotani, T & Woillez, J 2014, Development and recent results from the Subaru coronagraphic extreme adaptive optics system. in SK Ramsay, IS McLean & H Takami (eds), Ground-Based and Airborne Instrumentation for Astronomy V., 91471Q, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9147, SPIE, Ground-Based and Airborne Instrumentation for Astronomy V, Montreal, Canada, 6/22/14. https://doi.org/10.1117/12.2057249

Jovanovic N, Guyon O, Martinache F, Clergeon C, Singh G, Kudo T et al. Development and recent results from the Subaru coronagraphic extreme adaptive optics system. In Ramsay SK, McLean IS, Takami H, editors, Ground-Based and Airborne Instrumentation for Astronomy V. SPIE. 2014. 91471Q. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2057249

Jovanovic, N. ; Guyon, O. ; Martinache, F. ; Clergeon, C. ; Singh, G. ; Kudo, T. ; Newman, K. ; Kuhn, J. ; Serabyn, E. ; Norris, B. ; Tuthill, P. ; Stewart, P. ; Huby, E. ; Perrin, G. ; Lacour, S. ; Vievard, S. ; Murakami, N. ; Fumika, O. ; Minowa, Y. ; Hayano, Y. ; White, J. ; Lai, O. ; Marchis, F. ; Duchene, G. ; Kotani, T. ; Woillez, J. / Development and recent results from the Subaru coronagraphic extreme adaptive optics system. Ground-Based and Airborne Instrumentation for Astronomy V. editor / Suzanne K. Ramsay ; Ian S. McLean ; Hideki Takami. SPIE, 2014. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is one of a handful of extreme adaptive optics systems set to come online in 2014. The extreme adaptive optics correction is realized by a combination of precise wavefront sensing via a non-modulated pyramid wavefront sensor and a 2000 element deformable mirror. This system has recently begun on-sky commissioning and was operated in closed loop for several minutes at a time with a loop speed of 800 Hz, on ∼150 modes. Further suppression of quasi-static speckles is possible via a process called {"}speckle nulling{"} which can create a dark hole in a portion of the frame allowing for an enhancement in contrast, and has been successfully tested on-sky. In addition to the wavefront correction there are a suite of coronagraphs on board to null out the host star which include the phase induced amplitude apodization (PIAA), the vector vortex, 8 octant phase mask, 4 quadrant phase mask and shaped pupil versions which operate in the NIR (y-K bands). The PIAA and vector vortex will allow for high contrast imaging down to an angular separation of 1 λ/D to be reached; a factor of 3 closer in than other extreme AO systems. Making use of the left over visible light not used by the wavefront sensor is VAMPIRES and FIRST. These modules are based on aperture masking interferometry and allow for sub-diffraction limited imaging with moderate contrasts of ∼100-1000:1. Both modules have undergone initial testing on-sky and are set to be fully commissioned by the end of 2014.",

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author = "N. Jovanovic and O. Guyon and F. Martinache and C. Clergeon and G. Singh and T. Kudo and K. Newman and J. Kuhn and E. Serabyn and B. Norris and P. Tuthill and P. Stewart and E. Huby and G. Perrin and S. Lacour and S. Vievard and N. Murakami and O. Fumika and Y. Minowa and Y. Hayano and J. White and O. Lai and F. Marchis and G. Duchene and T. Kotani and J. Woillez",

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AU - Kudo, T.

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AU - Serabyn, E.

AU - Norris, B.

AU - Tuthill, P.

AU - Stewart, P.

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AU - Perrin, G.

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AU - Hayano, Y.

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AU - Marchis, F.

AU - Duchene, G.

AU - Kotani, T.

AU - Woillez, J.

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N2 - The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is one of a handful of extreme adaptive optics systems set to come online in 2014. The extreme adaptive optics correction is realized by a combination of precise wavefront sensing via a non-modulated pyramid wavefront sensor and a 2000 element deformable mirror. This system has recently begun on-sky commissioning and was operated in closed loop for several minutes at a time with a loop speed of 800 Hz, on ∼150 modes. Further suppression of quasi-static speckles is possible via a process called "speckle nulling" which can create a dark hole in a portion of the frame allowing for an enhancement in contrast, and has been successfully tested on-sky. In addition to the wavefront correction there are a suite of coronagraphs on board to null out the host star which include the phase induced amplitude apodization (PIAA), the vector vortex, 8 octant phase mask, 4 quadrant phase mask and shaped pupil versions which operate in the NIR (y-K bands). The PIAA and vector vortex will allow for high contrast imaging down to an angular separation of 1 λ/D to be reached; a factor of 3 closer in than other extreme AO systems. Making use of the left over visible light not used by the wavefront sensor is VAMPIRES and FIRST. These modules are based on aperture masking interferometry and allow for sub-diffraction limited imaging with moderate contrasts of ∼100-1000:1. Both modules have undergone initial testing on-sky and are set to be fully commissioned by the end of 2014.

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ER -

Development and recent results from the Subaru coronagraphic extreme adaptive optics system

Abstract

Publication series

Other

Keywords

ASJC Scopus subject areas

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