Hiciao: A high-contrast instrument for the next generation subaru adaptive optics

HiCIAO (the High-Contrast Instrument with Adaptive Optics) is a high-contrast instrument for the 8.2-meter Subaru Telescope. The instrument is a near-infrared camera which benefits from a new adaptive optics (AO) system on the Subaru Telescope (AO188). The instrument realizes the high contrast with...

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Bibliographic Details
Published in:AIP conference proceedings 2009-01, Vol.1158 (1), p.293-298
Main Authors: Suzuki, Ryuji, Tamura, Motohide, Suto, Hiroshi, Morino, Jun-Ichi, Hashimoto, Jun, Kudo, Tomoyuki, Kandori, Ryo, Murakami, Naoshi, Nishikawa, Jun, Ukita, Nobuharu, Takami, Hideki, Guyon, Olivier, Nishimura, Tetsuo, Hayashi, Masahiko, Izumiura, Hideyuki, Abe, Lyu
Format: Article
Language:English
Subjects:
ALIGNMENT
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
ATMOSPHERES
CAMERAS
COMMISSIONING
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
IMAGE PROCESSING
OPTICS
PHYSICS
PLANETS
PROCESSING
RADIATIONS
RESOLUTION
REVIEWS
STARS
STELLAR ATMOSPHERES
STELLAR CORONAE
TELESCOPES
VISIBLE RADIATION
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Summary:HiCIAO (the High-Contrast Instrument with Adaptive Optics) is a high-contrast instrument for the 8.2-meter Subaru Telescope. The instrument is a near-infrared camera which benefits from a new adaptive optics (AO) system on the Subaru Telescope (AO188). The instrument realizes the high contrast with a help of AO 188, a classical Lyot coronagraph, and three differential imaging techniques (polarimetric, spectral, and angular). Besides the differential imaging modes, HiCIAO also offers a normal imaging mode which covers 20(') x 20(') FOV with 0.(') 01 pixel(-1) resolution, and a pupil viewing mode for a precise alignment of the Lyot stop on the pupil image. The expected contrasts are 10(5.5) at l.(') 0 separation and 10(4) at 0.(') 1 separation from a central star in the spectral differential imaging mode. The instrument is currently in its commissioning phase after the first-light observation in December 2008. This paper is an introductory review of the instrument
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3215872