Fabrication of slicer optics of Mid infrared spectrometer with an Image Slicer (MIRSIS) for ground-based astronomy

Kenji Mitsui; Norio Okada; Mitsuhiro Fukushima; Tetsuo Nishino; Yoshiko Kataza Okamoto; Hirokazu Kataza; Takashi Onaka

doi:10.1117/12.787724

Fabrication of slicer optics of Mid infrared spectrometer with an Image Slicer (MIRSIS) for ground-based astronomy

Kenji Mitsui, Norio Okada, Mitsuhiro Fukushima, Tetsuo Nishino, Yoshiko Kataza Okamoto, Hirokazu Kataza, Takashi Onaka

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

3 Citations (Scopus)

Abstract

Mid Infrared Spectrometer with an Image Slicer (MIRSIS) is a compact mid-infrared spectrometer with an image slicer as a testbed of techniques for efficient observations with next generation telescopes. MIRSIS is a 10micron Band spectrometer for ground-based observations. Optics of MIRSIS is mostly composed of reflective ones. A key point of the development of MIRSIS is a fabrication of slicer optics, which consists of slice mirrors, pupil mirrors and pseudo slit mirrors. It is necessary to develop fabrication technique of slicer optics, because shapes and alignment of these mirrors are special. Here it is also important to choose the design matched to the processing method. In this paper, we report our fabrication of the slicer optics elements in detail. As a result, we achieved the slice mirror with the micro-roughness of RMS 12nm and the angle accuracy of under 0.0041deg, the pupil mirror with the micro-roughness of RMS 20nm and the shape accuracy of PV 3micron, and the pseudo slit mirror with the angle accuracy of 0.02deg. All of the parts fabricated satisfy the required specification.

Original language	English
Title of host publication	Ground-based and Airborne Instrumentation for Astronomy II
Volume	7014
DOIs	https://doi.org/10.1117/12.787724
Publication status	Published - 2008
Externally published	Yes
Event	Ground-based and Airborne Instrumentation for Astronomy II - Marseille, France Duration: 2008 Jun 23 → 2008 Jun 28

Other

Other	Ground-based and Airborne Instrumentation for Astronomy II
Country	France
City	Marseille
Period	08/6/23 → 08/6/28

Keywords

Ground-based
Image-slicer
Mid-infrared
Optics
Spectroscopy

ASJC Scopus subject areas

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

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10.1117/12.787724

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Fabrication of slicer optics of Mid infrared spectrometer with an Image Slicer (MIRSIS) for ground-based astronomy. / Mitsui, Kenji; Okada, Norio; Fukushima, Mitsuhiro; Nishino, Tetsuo; Okamoto, Yoshiko Kataza; Kataza, Hirokazu; Onaka, Takashi.

Ground-based and Airborne Instrumentation for Astronomy II. Vol. 7014 2008. 701427.

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

Mitsui, K, Okada, N, Fukushima, M, Nishino, T, Okamoto, YK, Kataza, H & Onaka, T 2008, Fabrication of slicer optics of Mid infrared spectrometer with an Image Slicer (MIRSIS) for ground-based astronomy. in Ground-based and Airborne Instrumentation for Astronomy II. vol. 7014, 701427, Ground-based and Airborne Instrumentation for Astronomy II, Marseille, France, 08/6/23. https://doi.org/10.1117/12.787724

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AU - Mitsui, Kenji

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AU - Fukushima, Mitsuhiro

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AU - Kataza, Hirokazu

AU - Onaka, Takashi

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AB - Mid Infrared Spectrometer with an Image Slicer (MIRSIS) is a compact mid-infrared spectrometer with an image slicer as a testbed of techniques for efficient observations with next generation telescopes. MIRSIS is a 10micron Band spectrometer for ground-based observations. Optics of MIRSIS is mostly composed of reflective ones. A key point of the development of MIRSIS is a fabrication of slicer optics, which consists of slice mirrors, pupil mirrors and pseudo slit mirrors. It is necessary to develop fabrication technique of slicer optics, because shapes and alignment of these mirrors are special. Here it is also important to choose the design matched to the processing method. In this paper, we report our fabrication of the slicer optics elements in detail. As a result, we achieved the slice mirror with the micro-roughness of RMS 12nm and the angle accuracy of under 0.0041deg, the pupil mirror with the micro-roughness of RMS 20nm and the shape accuracy of PV 3micron, and the pseudo slit mirror with the angle accuracy of 0.02deg. All of the parts fabricated satisfy the required specification.

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KW - Spectroscopy

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