Development of a slicer integral field unit for the existing optical spectrograph FOCAS: Progress

Shinobu Ozaki*, Yoko Tanaka, Takashi Hattori, Kenji Mitsui, Mitsuhiro Fukushima, Norio Okada, Yoshiyuki Obuchi, Toshihiro Tsuzuki, Satoshi Miyazaki, Takuya Yamashita

*この研究の対応する著者

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

We are developing an integral field unit (IFU) with an image slicer for the existing optical spectrograph, Faint Object Camera And Spectrograph (FOCAS), on the Subaru Telescope. The slice width is 0.43 arcsec, the slice number is 23, and the field of view is 13.5 × 9.89 arcsec2. Sky spectrum separated by about 5.7 arcmin from an object field can be simultaneously obtained, which allows us precise background subtraction. Slice mirrors, pupil mirrors and slit mirrors are all glass, and their mirror surfaces are fabricated by polishing. Our IFU is about 200 mm × 300 mm × 80 mm in size and 1 kg in weight. It is installed into a mask storage in FOCAS along with one or two mask plates, and inserted into the optical path by using the existing mask exchange mechanism. This concept allow us flexible operation such as Targets of Opportunity observations. High reflectivity of multilayer dielectric coatings offers high throughput (>80%) of the IFU. In this paper, we will report a final optical layout, its performances, and results of prototyping works.

本文言語English
ホスト出版物のタイトルAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation
出版社SPIE
9151
ISBN(電子版)9780819496195
DOI
出版ステータスPublished - 2014
外部発表はい
イベントAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation - Montreal
継続期間: 2014 6月 232014 6月 27

Other

OtherAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation
CityMontreal
Period14/6/2314/6/27

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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