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Hyper Suprime-Cam: System design and verification of image quality

Publications of the Astronomical Society of Japan, 2018-01, Vol.70 (SP1) [Peer Reviewed Journal]

The Author 2017. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. For Permissions, please email: journals.permissions@oup.com 2018 ;ISSN: 0004-6264 ;EISSN: 2053-051X ;DOI: 10.1093/pasj/psx063

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Title:
Hyper Suprime-Cam: System design and verification of image quality
Author: Miyazaki, Satoshi ; Komiyama, Yutaka ; Kawanomoto, Satoshi ; Doi, Yoshiyuki ; Furusawa, Hisanori ; Hamana, Takashi ; Hayashi, Yusuke ; Ikeda, Hiroyuki ; Kamata, Yukiko ; Karoji, Hiroshi ; Koike, Michitaro ; Kurakami, Tomio ; Miyama, Shoken ; Morokuma, Tomoki ; Nakata, Fumiaki ; Namikawa, Kazuhito ; Nakaya, Hidehiko ; Nariai, Kyoji ; Obuchi, Yoshiyuki ; Oishi, Yukie ; Okada, Norio ; Okura, Yuki ; Tait, Philip ; Takata, Tadafumi ; Tanaka, Yoko ; Tanaka, Masayuki ; Terai, Tsuyoshi ; Tomono, Daigo ; Uraguchi, Fumihiro ; Usuda, Tomonori ; Utsumi, Yousuke ; Yamada, Yoshihiko ; Yamanoi, Hitomi ; Aihara, Hiroaki ; Fujimori, Hiroki ; Mineo, Sogo ; Miyatake, Hironao ; Oguri, Masamune ; Uchida, Tomohisa ; Tanaka, Manobu M ; Yasuda, Naoki ; Takada, Masahiro ; Murayama, Hitoshi ; Nishizawa, Atsushi J ; Sugiyama, Naoshi ; Chiba, Masashi ; Futamase, Toshifumi ; Wang, Shiang-Yu ; Chen, Hsin-Yo ; Ho, Paul T P ; Liaw, Eric J Y ; Chiu, Chi-Fang ; Ho, Cheng-Lin ; Lai, Tsang-Chih ; Lee, Yao-Cheng ; Jeng, Dun-Zen ; Iwamura, Satoru ; Armstrong, Robert ; Bickerton, Steve ; Bosch, James ; Gunn, James E ; Lupton, Robert H ; Loomis, Craig ; Price, Paul ; Smith, Steward ; Strauss, Michael A ; Turner, Edwin L ; Suzuki, Hisanori ; Miyazaki, Yasuhito ; Muramatsu, Masaharu ; Yamamoto, Koei ; Endo, Makoto ; Ezaki, Yutaka ; Ito, Noboru ; Kawaguchi, Noboru ; Sofuku, Satoshi ; Taniike, Tomoaki ; Akutsu, Kotaro ; Dojo, Naoto ; Kasumi, Kazuyuki ; Matsuda, Toru ; Imoto, Kohei ; Miwa, Yoshinori ; Suzuki, Masayuki ; Takeshi, Kunio ; Yokota, Hideo
Is Part Of: Publications of the Astronomical Society of Japan, 2018-01, Vol.70 (SP1)
Description: Abstract The Hyper Suprime-Cam (HSC) is an 870 megapixel prime focus optical imaging camera for the 8.2 m Subaru telescope. The wide-field corrector delivers sharp images of 0${^{\prime\prime}_{.}}$2 (FWHM) in the HSC-i band over the entire 1${^{\circ}_{.}}$5 diameter field of view. The collimation of the camera with respect to the optical axis of the primary mirror is done with hexapod actuators, the mechanical accuracy of which is a few microns. Analysis of the remaining wavefront error in off-focus stellar images reveals that the collimation of the optical components meets design specifications. While there is a flexure of mechanical components, it also is within the design specification. As a result, the camera achieves its seeing-limited imaging on Maunakea during most of the time; the median seeing over several years of observing is 0${^{\prime\prime}_{.}}$67 (FWHM) in the i band. The sensors use p-channel, fully depleted CCDs of 200 μm thickness (2048 × 4176 15 μm square pixels) and we employ 116 of them to pave the 50 cm diameter focal plane. The minimum interval between exposures is 34 s, including the time to read out arrays, to transfer data to the control computer, and to save them to the hard drive. HSC on Subaru uniquely features a combination of a large aperture, a wide field of view, sharp images and a high sensitivity especially at longer wavelengths, which makes the HSC one of the most powerful observing facilities in the world.
Publisher: Oxford University Press
Language: English
Identifier: ISSN: 0004-6264
EISSN: 2053-051X
DOI: 10.1093/pasj/psx063
Source: Freely Accessible Japanese Titles

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Hyper Suprime-Cam: System design and verification of image quality

The Author 2017. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. For Permissions, please email: journals.permissions@oup.com 2018 ;ISSN: 0004-6264 ;EISSN: 2053-051X ;DOI: 10.1093/pasj/psx063

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