7 August 2014 Adaptive optics at the Subaru telescope: current capabilities and development
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Abstract
Current AO observations rely heavily on the AO188 instrument, a 188-elements system that can operate in natural or laser guide star (LGS) mode, and delivers diffraction-limited images in near-IR. In its LGS mode, laser light is transported from the solid state laser to the launch telescope by a single mode fiber. AO188 can feed several instruments: the infrared camera and spectrograph (IRCS), a high contrast imaging instrument (HiCIAO) or an optical integral field spectrograph (Kyoto-3DII). Adaptive optics development in support of exoplanet observations has been and continues to be very active. The Subaru Coronagraphic Extreme-AO (SCExAO) system, which combines extreme-AO correction with advanced coronagraphy, is in the commissioning phase, and will greatly increase Subaru Telescope’s ability to image and study exoplanets. SCExAO currently feeds light to HiCIAO, and will soon be combined with the CHARIS integral field spectrograph and the fast frame MKIDs exoplanet camera, which have both been specifically designed for high contrast imaging. SCExAO also feeds two visible-light single pupil interferometers: VAMPIRES and FIRST. In parallel to these direct imaging activities, a near-IR high precision spectrograph (IRD) is under development for observing exoplanets with the radial velocity technique. Wide-field adaptive optics techniques are also being pursued. The RAVEN multi-object adaptive optics instrument was installed on Subaru telescope in early 2014. Subaru Telescope is also planning wide field imaging with ground-layer AO with the ULTIMATE-Subaru project.
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Olivier Guyon, Olivier Guyon, Yutaka Hayano, Yutaka Hayano, Motohide Tamura, Motohide Tamura, Tomoyuki Kudo, Tomoyuki Kudo, Shin Oya, Shin Oya, Yosuke Minowa, Yosuke Minowa, Olivier Lai, Olivier Lai, Nemanja Jovanovic, Nemanja Jovanovic, Naruhisa Takato, Naruhisa Takato, Jeremy Kasdin, Jeremy Kasdin, Tyler Groff, Tyler Groff, Masahiko Hayashi, Masahiko Hayashi, Nobuo Arimoto, Nobuo Arimoto, Hideki Takami, Hideki Takami, Colin Bradley, Colin Bradley, Hajime Sugai, Hajime Sugai, Guy Perrin, Guy Perrin, Peter Tuthill, Peter Tuthill, Ben Mazin, Ben Mazin, } "Adaptive optics at the Subaru telescope: current capabilities and development", Proc. SPIE 9148, Adaptive Optics Systems IV, 91481R (7 August 2014); doi: 10.1117/12.2057273; https://doi.org/10.1117/12.2057273
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