Share Email Print
cover

Proceedings Paper

Performance characterization of the HiCIAO instrument for the Subaru Telescope
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

HiCIAO is a near-infrared, high contrast instrument which is specifically designed for searches and studies for extrasolar planets and proto-planetary/debris disks on the Subaru 8.2 m telescope. A coronagraph technique and three differential observing modes, i.e., a dual-beam simultaneous polarimetric differential imaging mode, quad-beam simultaneous spectral differential imaging mode, and angular differential imaging mode, are used to extract faint objects from the sea of speckle around bright stars. We describe the instrument performances verified in the laboratory and during the commissioning period. Readout noise with a correlated double sampling method is 15 e- using the Sidecar ASIC controller with the HAWAII-2RG detector array, and it is as low as 5 e- with a multiple sampling method. Strehl ratio obtained by HiCIAO on the sky combined with the 188-actuator adaptive optics system (AO188) is 0.4 and 0.7 in the H and K-band, respectively, with natural guide stars that have R ~ 5 and under median seeing conditions. Image distortion is correctable to 7 milli-arcsec level using the ACS data as a reference image. Examples of contrast performances in the observing modes are presented from data obtained during the commissioning period. An observation for HR 8799 in the angular differential imaging mode shows a clear detection of three known planets, demonstrating the high contrast capability of AO188+HiCIAO.

Paper Details

Date Published: 16 July 2010
PDF: 13 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773530 (16 July 2010); doi: 10.1117/12.857361
Show Author Affiliations
Ryuji Suzuki, Thirty Meter Telescope Observatory Corp. (United States)
National Astronomical Observatory of Japan, Subaru Telescope (United States)
Tomoyuki Kudo, National Astronomical Observatory of Japan, Subaru Telescope (United States)
National Astronomical Observatory of Japan (Japan)
Jun Hashimoto, Graduate Univ. for Advanced Studies (Japan)
Joseph Carson, Max-Planck-Institut für Astronomie (Germany)
Sebastian Egner, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Miwa Goto, Max-Planck-Institut für Astronomie (Germany)
Masayuki Hattori, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Yutaka Hayano, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Klaus Hodapp, Univ. of Hawai'i (United States)
Meguro Ito, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Masanori Iye, National Astronomical Observatory of Japan (Japan)
Shane Jacobson, Univ. of Hawai'i (United States)
Ryo Kandori, National Astronomical Observatory of Japan (Japan)
Nobuhiko Kusakabe, National Astronomical Observatory of Japan (Japan)
Masayuki Kuzuhara, The Univ. of Tokyo (Japan)
Taro Matsuo, National Astronomical Observatory of Japan (Japan)
Michael Mcelwain, Princeton Univ. (United States)
Jun-Ichi Morino, National Astronomical Observatory of Japan (Japan)
Shin Oya, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Yoshihiko Saito, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Richard Shelton, Univ. of Hawai'i (United States)
Vern Stahlberger, Univ. of Hawai'i (United States)
Hiroshi Suto, National Astronomical Observatory of Japan (Japan)
Hideki Takami, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Christian Thalmann, Max-Planck-Institut für Astronomie (Germany)
Makoto Watanabe, National Astronomical Observatory of Japan, Subaru Telescope (United States)
Hubert Yamada, Univ. of Hawai'i (United States)
Motohide Tamura, National Astronomical Observatory of Japan (Japan)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

© SPIE. Terms of Use
Back to Top