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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 225931.0, MPI für Astronomie / Publikationen_mpia
CIAO: Coronagraphic imager with adaptive optics on the Subaru Telescope
Authors:Murakawa, Koji; Suto, Hiroshi; Tamura, Motohide; Kaifu, Norio; Takami, Hideki; Takato, Naruhisa; Oya, Shin; Hayano, Yutaka; Gaessler, Wolfgang; Kamata, Yukiko
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Publications of the Astronomical Society of Japan
Volume:56
Start Page:509
End Page:519
Review Status:not specified
Audience:Not Specified
Abstract / Description:We present the performances of direct imaging
with adaptive optics, coronagraph, and
imaging-polarimetry of the coronagraphic imager
with adaptive optics (CIAO) for the Subaru
telescope. Combining with the 36-element
adaptive optics system, CIAO produces
high-resolution images with a full width at half
maximum of 0''.072 and a Strehl ratio of 0.28 in
the K band. CIAO has a Lyot's-type stellar
coronagraph facility with 0''.1 to 4''.0
diameter masks. The limiting magnitude difference
of a companion star at the K band is 11.0mag at
5 ‚‚sigma;, 10 minutes integration time, and
2''.0 separation from the central star. CIAO also
has a polarimetry facility with a rotatable
half-wave plate and a wire grid polarizer.
Currently, the measurement of JHK band linear
polarization is available.
Free Keywords:instrumentation: coronagraph -- instrumentation: polarimetry
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
External Affiliations:Observatory of Japan, 650 North A'ohoku Place,
Hilo, HI 96720, USA ;
<EMAIL>murakawa@naoj.org</EMAIL>) AB(Subaru
Telescope, National Astronomical Observatory of
Japan, 650 North A'ohoku Place, Hilo, HI 96720,
USA ) AC(National Astoronomical Observatory,
2-21-1 Osawa, Mitaka, Tokyo 181-8588) AD(National
Astoronomical Observatory, 2-21-1 Osawa, Mitaka,
Tokyo 181-8588) AE(Subaru Telescope, National
Astronomical Observatory of Japan, 650 North
A'ohoku Place, Hilo, HI 96720, USA ) AF(Subaru
Telescope, National Astronomical Observatory of
Japan, 650 North A'ohoku Place, Hilo, HI 96720,
USA ) AG(Subaru Telescope, National Astronomical
Observatory of Japan, 650 North A'ohoku Place,
Hilo, HI 96720, USA ) AH(National Astoronomical
Observatory, 2-21-1 Osawa, Mitaka, Tokyo
181-8588) AI(Max-Plank Institute f‚‚uuml;r
Astronomie, K‚‚ouml;nigstuhl 17, 69117
Heidelberg, Germany) AJ(National Astoronomical
Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588)
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi... [ID No:1]
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