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

doi:10.1117/12.2054838

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

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Publisher	SPIE
Volume	9151
ISBN (Electronic)	9780819496195
DOIs	https://doi.org/10.1117/12.2054838
Publication status	Published - 2014
Externally published	Yes
Event	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation - Montreal Duration: 2014 Jun 23 → 2014 Jun 27

Other

Other	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
City	Montreal
Period	14/6/23 → 14/6/27

Keywords

FOCAS
Image slicer
Integral Field Unit (IFU)
Optical
Subaru Telescope

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2054838

Cite this

Ozaki, S., Tanaka, Y., Hattori, T., Mitsui, K., Fukushima, M., Okada, N., Obuchi, Y., Tsuzuki, T., Miyazaki, S., & Yamashita, T. (2014). Development of a slicer integral field unit for the existing optical spectrograph FOCAS: Progress. In Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation (Vol. 9151). [915149] SPIE. https://doi.org/10.1117/12.2054838

Ozaki, S, Tanaka, Y, Hattori, T, Mitsui, K, Fukushima, M, Okada, N, Obuchi, Y, Tsuzuki, T, Miyazaki, S & Yamashita, T 2014, Development of a slicer integral field unit for the existing optical spectrograph FOCAS: Progress. in Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation. vol. 9151, 915149, SPIE, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, Montreal, 14/6/23. https://doi.org/10.1117/12.2054838

@inproceedings{d36089cb81134c6eb565ab78389ebf7b,

title = "Development of a slicer integral field unit for the existing optical spectrograph FOCAS: Progress",

abstract = "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.",

keywords = "FOCAS, Image slicer, Integral Field Unit (IFU), Optical, Subaru Telescope",

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

year = "2014",

doi = "10.1117/12.2054838",

language = "English",

volume = "9151",

booktitle = "Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation",

publisher = "SPIE",

address = "United States",

note = "Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation ; Conference date: 23-06-2014 Through 27-06-2014",

}

TY - GEN

T1 - Development of a slicer integral field unit for the existing optical spectrograph FOCAS

T2 - Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation

AU - Ozaki, Shinobu

AU - Tanaka, Yoko

AU - Hattori, Takashi

AU - Mitsui, Kenji

AU - Fukushima, Mitsuhiro

AU - Okada, Norio

AU - Obuchi, Yoshiyuki

AU - Tsuzuki, Toshihiro

AU - Miyazaki, Satoshi

AU - Yamashita, Takuya

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

KW - FOCAS

KW - Image slicer

KW - Integral Field Unit (IFU)

KW - Optical

KW - Subaru Telescope

UR - http://www.scopus.com/inward/record.url?scp=84922728626&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84922728626&partnerID=8YFLogxK

U2 - 10.1117/12.2054838

DO - 10.1117/12.2054838

M3 - Conference contribution

AN - SCOPUS:84922728626

VL - 9151

BT - Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation

PB - SPIE

Y2 - 23 June 2014 through 27 June 2014

ER -

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

Abstract

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this