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Proceedings Paper

Test observations of the Kyoto Tridimensional Spectrograph II at the University of Hawaii 88-in and Subaru Telescopes
Author(s): Hajime Sugai; Takashi Hattori; Atsushi Kawai; Shinobu Ozaki; George Kosugi; Hiroshi Ohtani; Tadashi Hayashi; Tsuyoshi Ishigaki; Motomi Ishii; Minoru Sasaki; Atsushi Shimono; Yoshiko Okita; Jun Sudo; Norihide Takeyama
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Paper Abstract

In order to investigate the physical conditions of ionized gas in galaxies, as well as its kinematics, we have developed the Kyoto tridimensional spectrograph II (3DII). It is a multi-mode instrument designed for Cassegrain focus, including integral field spectrograph (IFS) and Fabry-Perot imager modes. We have designed it compact so that we can mount it at 2-m class telescopes as well as at 8-m Subaru telescope. We have succeeded in test observations of the 3DII. In the IFS mode the spatial resolution of ~ 0".5 and 0".4 was obtained in 30-minute exposures at University of Hawaii 88-inch (UH88) and Subaru, respectively, in relatively good weather conditions. Each of 37 × 37 microlenses subtends ~ 0".1 in Subaru's case. This samples well the image size. A wider field of view is emphasized in the case of UH88. Because our micropupil spectroscopy is free from a slit effect, we have reached the accuracy of an order of one tenth of a pixel for deriving velocity fields in terms of velocity center while the full width at half maximum of the instrumental profile corresponds to two pixels. At Subaru we have used a container designed in a collaboration with National Astronomical Observatory, Japan: it fits with a robotic instrument exchanger. The containerincludes two heat exchangers to keep its surface cool and void degrading the image quality. We have established effective observational equences by realizing a software interface with Subaru operating system. ome results from target observations are shown.

Paper Details

Date Published: 30 September 2004
PDF: 10 pages
Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); doi: 10.1117/12.550987
Show Author Affiliations
Hajime Sugai, Kyoto Univ. (Japan)
Takashi Hattori, National Astronomical Observatory of Japan (Japan)
Atsushi Kawai, Kyoto Univ. (Japan)
Shinobu Ozaki, Nishiharima Observatory (Japan)
George Kosugi, Subaru Telescope/NAOJ (United States)
Hiroshi Ohtani, Ryukoku Univ. (Japan)
Tadashi Hayashi, Toyama Science Museum (Japan)
Tsuyoshi Ishigaki, Hokkaido Univ. (Japan)
Motomi Ishii, Kurashiki Science Ctr. (Japan)
Minoru Sasaki, Shimonoseki City Univ. (Japan)
Atsushi Shimono, Kyoto Univ. (Japan)
Yoshiko Okita, Kyoto Univ. (Japan)
Jun Sudo, Kyoto Univ. (Japan)
Norihide Takeyama, Genesia Corp. (Japan)

Published in SPIE Proceedings Vol. 5492:
Ground-based Instrumentation for Astronomy
Alan F. M. Moorwood; Masanori Iye, Editor(s)

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