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Proceedings Paper

Development of Nayoro optical camera and spectrograph for 1.6-m Pirka telescope of Hokkaido University
Author(s): Hikaru Nakao; Makoto Watanabe; Kazuo Sorai; Mahiro Yamada; Yoichi Itoh; Shigeyuki Sako; Takashi Miyata
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Paper Abstract

We have developed a visible imager and spectrograph, Nayoro Optical Camera and Spectrograph (NaCS), in- stalled at the f/12 Nasmyth focus of the 1.6-m Pirka telescope of the Hokkaido University in Hokkaido, Japan. The optical and mechanical design is similar to that of WFGS2 of the University of Hawaii 2.2-m telescope (UH88), however the camera is newly designed. The spectral coverage is 380–970 nm, and the field of view is 8.4 × 4.5 arcmin with a pixel scale of 0.247 arcsec pixel-1. The SDSS (g', r', i', z') filters, Johnson (B, V ) filters and a replica grism (R ~300 at 650 nm) are equipped. The slit width can be selected from 2, 3, and 4 arcsec. We selected a 2kx1k fully-depleted back-illuminated Hamamatsu CCD as a detector, because it has a high quantum efficiency (≥ 80 %) over optical wavelength. The Kiso Array Controller (KAC) is used as a CCD controller. The first light observation was done on November 2011. NaCS is used mainly for long-term spectroscopic monitor of active galactic nuclei. It is also used for several astronomical observations such as light-curve measurements of asteroids and search of pre-main-sequence stars and brown dwarfs by slit-less spectroscopy as a major facility instrument of the Pirka telescope. We present the design, construction, integration, and performance of this instrument.

Paper Details

Date Published: 18 July 2014
PDF: 10 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91473P (18 July 2014); doi: 10.1117/12.2055399
Show Author Affiliations
Hikaru Nakao, Hokkaido Univ. (Japan)
Makoto Watanabe, Hokkaido Univ. (Japan)
Kazuo Sorai, Hokkaido Univ. (Japan)
Mahiro Yamada, Kobe Univ. (Japan)
Yoichi Itoh, Univ. of Hyogo (Japan)
Shigeyuki Sako, The Univ. of Tokyo (Japan)
Takashi Miyata, The Univ. of Tokyo (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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