HiCIAO: A High-contrast Instrument for the Next Generation Subaru Adaptive Optics

Details HiCIAO: A High-contrast Instrument for the Next Generation Subaru Adaptive Optics HiCIAO: A High-contrast Instrument for the Next Generation Subaru Adaptive Optics

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1158..293s&link_type=abstract

EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY: Proceedings of the International Conference. AIP Conference Proceedings, V

Physics

Optics

2

Astrometric And Interferometric Instruments, Accretion And Accretion Disks, Adaptive And Segmented Optics, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

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 AO188, 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''×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 105.5 at 1.''0 separation and 104 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.

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