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Proceedings Paper

HONIR: an optical and near-infrared simultaneous imager, spectrograph, and polarimeter for the 1.5-m Kanata telescope
Author(s): Hiroshi Akitaya; Yuki Moritani; Takahiro Ui; Takeshi Urano; Yuma Ohashi; Koji S. Kawabata; Asami Nakashima; Mahito Sasada; Kiyoshi Sakimoto; Tatsuya Harao; Hisashi Miyamoto; Rieko Matsui; Ryosuke Itoh; Katsutoshi Takaki; Issei Ueno; Takashi Ohsugi; Hidehiko Nakaya; Takuya Yamashita; Michitoshi Yoshida
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Paper Abstract

We have developed an optical and near-infrared instrument HONIR (Hiroshima Optical and Near-InfraRed camera) with imaging, spectroscopy, and polarimetry capabilities in two (one optical and one near-infrared) bands simultaneously. Imaging capability with a field of view of 10 arcmin by 10 arcmin has been available since 2011, as reported in the previous SPIE conference. In addition, spectroscopic and polarimetric optical components (grisms, an Wollaston prism, a half-wave plate, and focal masks) were installed in the instrument, which enabled us to perform spectroscopy and linear polarization measurement by imaging polarimetry and spectro-polarimetry. Spectral resolution of R = λ/(triangle)λ ~ 440 - 800 is achieved in spectroscopy using a slit mask with an 1".3 width. In polarimetry, instrumental polarization is less than ~0.05 % with stability of better than ~0.05 %, which is sufficiently small to achieve an aimed accuracy of polarization measurement of ~0.1 % at primal observing wavelengths.

Paper Details

Date Published: 6 August 2014
PDF: 15 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91474O (6 August 2014); doi: 10.1117/12.2054577
Show Author Affiliations
Hiroshi Akitaya, Hiroshima Univ. (Japan)
Yuki Moritani, Hiroshima Univ. (Japan)
Takahiro Ui, Hiroshima Univ. (Japan)
Takeshi Urano, Hiroshima Univ. (Japan)
Yuma Ohashi, Hiroshima Univ. (Japan)
Koji S. Kawabata, Hiroshima Univ. (Japan)
Asami Nakashima, Nagoya City Science Museum (Japan)
Mahito Sasada, Kyoto Univ. (Japan)
Kiyoshi Sakimoto, Hiroshima Univ. (Japan)
Tatsuya Harao, Hiroshima Univ. (Japan)
Hisashi Miyamoto, Molex Japan Co., Ltd. (Japan)
Rieko Matsui, Hiroshima Univ. (Japan)
Ryosuke Itoh, Hiroshima Univ. (Japan)
Katsutoshi Takaki, Hiroshima Univ. (Japan)
Issei Ueno, Hiroshima Univ. (Japan)
Takashi Ohsugi, Hiroshima Univ. (Japan)
Hidehiko Nakaya, National Astronomical Observatory of Japan (Japan)
Takuya Yamashita, National Astronomical Observatory of Japan (Japan)
Michitoshi Yoshida, Hiroshima Univ. (Japan)

Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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