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Title:
Hyper Suprime-Cam: autoguider and Shack-Hartmann systems
Authors:
Morokuma, Tomoki; Komiyama, Yutaka; Miyazaki, Satoshi; Nakaya, Hidehiko; Furusawa, Hisanori; Tomono, Daigo; Kawanomoto, Satoshi; Tanaka, Yoko
Affiliation:
AA(National Astronomical Observatory of Japan (Japan)), AB(National Astronomical Observatory of Japan (Japan)), AC(National Astronomical Observatory of Japan (Japan)), AD(Subaru Telescope, National Astronomical Observatory of Japan (United States)), AE(Subaru Telescope, National Astronomical Observatory of Japan (United States)), AF(Subaru Telescope, National Astronomical Observatory of Japan (United States)), AG(National Astronomical Observatory of Japan (Japan)), AH(Subaru Telescope, National Astronomical Observatory of Japan (United States))
Publication:
Ground-based and Airborne Instrumentation for Astronomy II. Edited by McLean, Ian S.; Casali, Mark M. Proceedings of the SPIE, Volume 7014, pp. 70144W-70144W-9 (2008). (SPIE Homepage)
Publication Date:
08/2008
Origin:
SPIE
DOI:
10.1117/12.788481
Bibliographic Code:
2008SPIE.7014E.161M

Abstract

We present methodology of the autoguider (AG) and Shack-Hartmann (SH) sensing systems which will be used for a wide-field camera, Hyper Suprime-Cam (HSC), on the prime focus of the Subaru 8.2-m telescope. For both systems, stellar images are formed on the HSC science CCDs. Although light from AG stars must pass through bandpass filters, we can obtain enough photons for AG stars brighter than mAB < 14 mag in any bandpass filter assumed in order to achieve accurate autoguiding. Spatial number density of such bright stars from the SDSS database requires an area of about two 2k×4k CCDs for AG stars. The optics of SH system except for the imaging CCDs is located within the HSC filter unit.
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