Wide-field one-shot optical polarimeter: HOWPol

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

doi:10.1117/12.788569

11 July 2008 Wide-field one-shot optical polarimeter: HOWPol

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

Author Affiliations +

Proceedings Volume 7014, Ground-based and Airborne Instrumentation for Astronomy II; 70144L (2008) https://doi.org/10.1117/12.788569
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

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.

Citation Download Citation

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, and Shuji Sato "Wide-field one-shot optical polarimeter: HOWPol", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70144L (11 July 2008); https://doi.org/10.1117/12.788569

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