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Proceedings Paper

Wide-field one-shot optical polarimeter: HOWPol
Author(s): Koji S. Kawabata; Osamu Nagae; Shingo Chiyonobu; Hiroyuki Tanaka; Hidehiko Nakaya; Mariko Suzuki; Yukiko Kamata; Satoshi Miyazaki; Kazuyoshi Hiragi; Hisashi Miyamoto; Masayuki Yamanaka; Akira Arai; Takuya Yamashita; Makoto Uemura; Takashi Ohsugi; Mizuki Isogai; Yoshiaki Ishitobi; Shuji Sato
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Paper Abstract

For prompt optical polarimetry of gamma-ray burst (GRB) afterglow, we require wide-field imaging polarimeter which can produce both Stokes Q and U parameters from only a single exposure, as well as quickly-moving telescope and enclosure system. HOWPol is an optical imaging polarimeter which provides four linearly polarized images at position angles of 0°, 45°, 90° and 135°, i.e., Stokes I, Q, U, simultaneously. The key device is the wedged double Wollaston prism described by Oliva (1997)1 and Pernechele et al. (2003).2 The images are focused on two 2k×4k fully depleted CCDs. We report the design and development of the optical devices of HOWPol, which will be mounted to the 1.5-m Kanata telescope at Hiroshima University and stand by the GRB alert.

Paper Details

Date Published: 11 July 2008
PDF: 10 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70144L (11 July 2008); doi: 10.1117/12.788569
Show Author Affiliations
Koji S. Kawabata, Hiroshima Astrophysical Science Ctr., Hiroshima Univ. (Japan)
Osamu Nagae, Hiroshima Univ. (Japan)
Shingo Chiyonobu, NEC System Technologies, Ltd. (Japan)
Hiroyuki Tanaka, Hiroshima Univ. (Japan)
Hidehiko Nakaya, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Mariko Suzuki, Toyota Technical Development Corp. (Japan)
Yukiko Kamata, National Astronomical Observatory of Japan (Japan)
Satoshi Miyazaki, National Astronomical Observatory of Japan (Japan)
Kazuyoshi Hiragi, Hiroshima Univ. (Japan)
Hisashi Miyamoto, Hiroshima Univ. (Japan)
Masayuki Yamanaka, Hiroshima Univ. (Japan)
Akira Arai, Hiroshima Univ. (Japan)
Takuya Yamashita, Hiroshima Astrophysical Science Ctr., Hiroshima Univ. (Japan)
Makoto Uemura, Hiroshima Astrophysical Science Ctr., Hiroshima Univ. (Japan)
Takashi Ohsugi, Hiroshima Astrophysical Science Ctr., Hiroshima Univ. (Japan)
Mizuki Isogai, Hiroshima Astrophysical Science Ctr., Hiroshima Univ. (Japan)
Yoshiaki Ishitobi, Hiroshima Univ. (Japan)
Shuji Sato, Nagoya Univ. (Japan)


Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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