Prof. Tetsuo Nishimura Profile

Prof. Tetsuo Nishimura

Associate Professor at Subaru Telescope NAOJ

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 9 August 2016 Paper

Paper

The nuMOIRCS project: detector upgrade overview and early commissioning results

Josh Walawender, Matthew Wung, Maximilian Fabricius, Ichi Tanaka, Nobuo Arimoto, David Cook, Brian Elms, Yasuhito Hashiba, Yen-Sang Hu, Ikuru Iwata, Tetsuo Nishimura, Koji Omata, Naruhisa Takato, Shiang-Yu Wang, Mark Weber

Proceedings Volume 9908, 99082G (2016) https://doi.org/10.1117/12.2231812

KEYWORDS: Sensors, Control systems, Telescopes, Cryogenics, Electronics, Computing systems, Human-machine interfaces, Power supplies, Imaging systems, Interfaces

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Proceedings Article | 9 August 2016 Paper

Paper

Detector upgrade of Subaru's Multi-object Infrared Camera and Spectrograph (MOIRCS)

Maximilian Fabricius, Joshua Walawender, Nobuo Arimoto, David Cook, Brian Elms, Yasuhito Hashiba, Takashi Hattori, Yen-Sang Hu, Ikuru Iwata, Tetsuo Nishimura, Koji Omata, Philip Tait, Naruhisa Takato, Ichi Tanaka, Shiang-Yu Wang, Mark Weber, Matthew Wung

Proceedings Volume 9908, 990828 (2016) https://doi.org/10.1117/12.2231417

KEYWORDS: Sensors, Astronomical imaging, Infrared sensors, Spectrographs, Infrared cameras, Electronics, Cryogenics, Sensors, Infrared sensors, Astronomical imaging, Coating, Molybdenum, Optical benches

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Proceedings Article | 7 August 2014 Paper

Paper

ULTIMATE-SUBARU: simulation update

Shin Oya, Yutaka Hayano, Olivier Lai, Ikuru Iwata, Tadayuki Kodama, Nobuo Arimoto, Yosuke Minowa, Masayuki Akiyama, Yoshito Ono, Hiroshi Terada, Tomonori Usuda, Hideki Takami, Tetsuo Nishimura, Naruhisa Takato, Daigo Tomono

Proceedings Volume 9148, 91486G (2014) https://doi.org/10.1117/12.2055701

KEYWORDS: Turbulence, Adaptive optics, Point spread functions, Device simulation, Atmospheric modeling, Telescopes, K band, Astronomy, Mirrors, Atmospheric turbulence

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Proceedings Article | 13 September 2012 Paper

Paper

A preliminary simulation result of the next-generation wide-field AO at Subaru Telescope

Shin Oya, Masayuki Akiyama, Yutaka Hayano, Yosuke Minowa, Ikuru Iwata, Hiroshi Terada, Tomonori Usuda, Hideki Takami, Tetsuo Nishimura, Tadayuki Kodama, Naruhisa Takato, Daigo Tomono, Yoshito Ono

Proceedings Volume 8447, 84473V (2012) https://doi.org/10.1117/12.926556

KEYWORDS: Adaptive optics, Device simulation, Stars, Telescopes, Mirrors, Turbulence, Atmospheric modeling, Actuators, K band, Optical simulations

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Proceedings Article | 25 July 2008 Paper

Paper

HiCIAO: the Subaru Telescope's new high-contrast coronographic imager for adaptive optics

Klaus Hodapp, Ryuji Suzuki, Motohide Tamura, Lyu Abe, Hiroshi Suto, Ryo Kandori, Junichi Morino, Tetsuo Nishimura, Hideki Takami, Olivier Guyon, Shane Jacobson, Vern Stahlberger, Hubert Yamada, Richard Shelton, Jun Hashimoto, Alexander Tavrov, Jun Nishikawa, Nobuharu Ukita, Hideyuki Izumiura, Masahiko Hayashi, Tadashi Nakajima, Toru Yamada, Tomonori Usuda

Proceedings Volume 7014, 701419 (2008) https://doi.org/10.1117/12.788088

KEYWORDS: Adaptive optics, Telescopes, Imaging systems, Optical filters, Infrared cameras, Methane, Absorption, Sensors, Prisms, Image filtering

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Proceedings Article | 23 July 2008 Paper

Paper

Automatic pre-cooling system for large infrared instruments

Koji Omata, Tetsuo Nishimura, Stephen Colley, David Cook, William Gorman, Barney Magrath, Lucio Ramos, Scot Kleinman, Chihiro Tokoku, Masahiro Konishi, Tomohiro Yoshikawa, Ichi Tanaka, Ryuji Suzuki

Proceedings Volume 7018, 70182E (2008) https://doi.org/10.1117/12.787173

KEYWORDS: Nitrogen, Liquids, Control systems, Sensors, Switches, Infrared radiation, Cryogenics, Collimators, Temperature metrology, Cooling systems

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An infrared instrument used for observation has to keep the detector and optical components in a very cold environment during operation. However, because of maintenance, upgrades, and other routine work, there are situations that require the instrument to be warmed-up and then cooled-down again. At Subaru Observatory, our MOIRCS infrared instrument has required warm-up and cool-down several times a year for routine maintenance and filter replacement. The MOIRCS instrument has a large heat capacity and cool-down using only the closed cycle cooler is impractical due to the huge amount of time it would require. To address this problem Subaru engineers have created a mechanism to allow PRE-COOLING of the instrument via liquid nitrogen - allowing for a much faster pre-cool process. Even with liquid nitrogen, the pre-cool process requires 10 tanks and almost a week of continual monitoring in order to reach the desired target temperature. It is very difficult to work for such a long period of time at the oxygen starved summit of Mauna Kea (4205 meters),and issues of man-power and scheduling conflicts only add to the problems. To address these concerns Subaru developed an automated pre-cooling system which works continuously and remotely at the summit. The strategy was to have basic functionality for pre-cooling and user friendly interface. i.e. (1) Continuous cooling until the target temperature is reached by automated liquid nitrogen tank exchanges and precision temperature control by automated changes to the liquid nitrogen flow. (2) Remote monitoring and control of all parameter setting by Web browser as user interface (UI). The goal of the Subaru pre-cooling system was to make it both inexpensive and quick to implement by using existing technologies. The original goal (to cut down on labor and precision temperature control) has been attained through several pre-cooling and software/hardware modification cycles. We will report on the progress and status of our pre-cooling experiences in this presentation.

Proceedings Article | 9 July 2008 Paper

Paper

Conceptual design of IR multi-IFU spectrograph with MOAO

Daigo Tomono, Wolfgang Gaessler, Tetsuo Nishimura

Proceedings Volume 7014, 70141B (2008) https://doi.org/10.1117/12.790000

KEYWORDS: Adaptive optics, Telescopes, Mirrors, Spectrographs, Galactic astronomy, Staring arrays, Spatial resolution, Spectral resolution, Tomography, Microlens array

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Proceedings Article | 11 July 2006 Paper

Paper

Improvement of the thermal environment around the Subaru Telescope enclosure

Akihiko Miyashita, Yoshitaka Mikami, Tetsuo Nishimura, Naruhisa Takato

Proceedings Volume 6267, 62670K (2006) https://doi.org/10.1117/12.670744

KEYWORDS: Telescopes, Mirrors, Particles, Infrared cameras, Astronomical telescopes, Aluminum, Coating, Cements, Temperature sensors, Astronomy

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Proceedings Article | 29 June 2006 Paper

Paper

Current status of science operation at Subaru

Junichi Noumaru, Tetsuo Nishimura, Saeko Hayashi, Hiroshi Terada, Tomoko Fuselier, Jun Hasegawa

Proceedings Volume 6270, 62700A (2006) https://doi.org/10.1117/12.672150

KEYWORDS: Telescopes, Observatories, Curium, Cameras, Gemini Observatory, Document management, Astronomical telescopes, Astronomy, Spectrographs, Infrared cameras

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Proceedings Article | 28 June 2006 Paper

Paper

Concept and science of HiCIAO: high contrast instrument for the Subaru next generation adaptive optics

Motohide Tamura, Klaus Hodapp, Hideki Takami, Lyu Abe, Hiroshi Suto, Olivier Guyon, Shane Jacobson, Ryo Kandori, Jun-Ichi Morino, Naoshi Murakami, Vern Stahlberger, Ryuji Suzuki, Alexander Tavrov, Hubert Yamada, Jun Nishikawa, Nobuharu Ukita, Jun Hashimoto, Hideyuki Izumiura, Masahiko Hayashi, Tadashi Nakajima, Tetsuo Nishimura

Proceedings Volume 6269, 62690V (2006) https://doi.org/10.1117/12.670742

KEYWORDS: Coronagraphy, Adaptive optics, Stars, Telescopes, Exoplanets, Polarization, Astronomy, Optical filters, Space telescopes, Actuators

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Proceedings Article | 28 June 2006 Paper

Paper

MOIRCS: multi-object infrared camera and spectrograph for SUBARU

Takashi Ichikawa, Ryuji Suzuki, Chihiro Tokoku, Yuka Katsuno Uchimoto, Masahiro Konishi, Tomohiro Yoshikawa, Toru Yamada, Ichi Tanaka, Koji Omata, Tetsuo Nishimura

Proceedings Volume 6269, 626916 (2006) https://doi.org/10.1117/12.670078

KEYWORDS: Sensors, Telescopes, Digital signal processing, Optical benches, Imaging spectroscopy, Stars, Astronomical imaging, Molybdenum, Control systems, Spectroscopy

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Proceedings Article | 28 June 2006 Paper

Paper

Infrared multi-object spectrograph of MOIRCS

Chihiro Tokoku, Ryuji Suzuki, Koji Omata, Masahiro Konishi, Tomohiro Yoshikawa, Masayuki Akiyama, Ichi Tanaka, Takashi Ichikawa, Tetsuo Nishimura

Proceedings Volume 6269, 62694N (2006) https://doi.org/10.1117/12.672418

KEYWORDS: Molybdenum, Stars, Telescopes, Sensors, Cryogenics, K band, Astronomical imaging, Spectroscopy, Spectrographs, Thermal effects

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Proceedings Article | 27 June 2006 Paper

Paper

Application of SQL database to the control system of MOIRCS

Tomohiro Yoshikawa, Koji Omata, Masahiro Konishi, Takashi Ichikawa, Ryuji Suzuki, Chihiro Tokoku, Yuka Katsuno Uchimoto, Tetsuo Nishimura

Proceedings Volume 6274, 62740Y (2006) https://doi.org/10.1117/12.670957

KEYWORDS: Databases, Control systems, Sensors, Data communications, Telescopes, Process control, Imaging spectroscopy, Telecommunications, Human-machine interfaces, Spectroscopes

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Proceedings Article | 7 March 2003 Paper

Paper

Overview of the Subaru telescope instrumentation

Takuya Yamashita, Tetsuo Nishimura

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461903

KEYWORDS: Telescopes, Adaptive optics, Spectrographs, Imaging spectroscopy, Observatories, Molybdenum, Infrared radiation, Infrared cameras, Charge-coupled devices, Cameras

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Proceedings Article | 7 March 2003 Paper

Paper

MOIRCS: muti-object infrared camera and spectrograph for the Subaru Telescope

Chihiro Tokoku, Ryuji Suzuki, Takashi Ichikawa, Ken'ichiro Asai, Yuka Katsuno, Koji Omata, Toru Yamada, Atsuo Sasaki, Tetsuo Nishimura

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461911

KEYWORDS: Imaging spectroscopy, Sensors, Astronomical imaging, Spectroscopy, Cryogenics, Telescopes, Control systems, Spectrographs, Astronomy, K band

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Proceedings Article | 7 March 2003 Paper

Paper

Tohoku University focal plane array controller (TOUFPAC)

Takashi Ichikawa, Daigo Matsumoto, Kenshi Yanagisawa, Yuka Katsuno, Ryuji Suzuki, Chihiro Tokoku, Ken'ichiro Asai, Tetsuo Nishimura

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.459864

KEYWORDS: Digital signal processing, Staring arrays, Clocks, Electronics, Control systems, Data conversion, Control systems design, Astronomy, Signal processing, Optical isolators

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Proceedings Article | 7 March 2003 Paper

Paper

Optical design of MOIRCS

Ryuji Suzuki, Chihiro Tokoku, Takashi Ichikawa, Tetsuo Nishimura

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461446

KEYWORDS: Chromatic aberrations, Optical design, Collimators, Telescopes, Mirrors, Cameras, Lens design, Tolerancing, Sensors, Silica

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Proceedings Article | 7 March 2003 Paper

Paper

Performance of HAWAII-2 FPAs for multi-object infrared camera and spectrograph

Yuka Katsuno, Takashi Ichikawa, Ken'ichiro Asai, Ryuji Suzuki, Chihiro Tokoku, Tetsuo Nishimura

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461919

KEYWORDS: Astronomical imaging, Clocks, Spectrographs, Staring arrays, Control systems, Digital signal processing, Infrared cameras, Mercury cadmium telluride, Astronomy, Cameras

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Proceedings Article | 18 December 2002 Paper

Paper

Application of HAWAII-2 FPAs for an astronomical wide-field imager and multi-object spectrograph

Yuka Katsuno, Takashi Ichikawa, Daigo Matsumoto, Ken'ichiro Asai, Ryuji Suzuki, Chihiro Tokoku, Kenshi Yanagisawa, Tetsuo Nishimura

Proceedings Volume 4818, (2002) https://doi.org/10.1117/12.451042

KEYWORDS: Digital signal processing, Astronomy, Astronomical imaging, Control systems, Staring arrays, Electronics, Clocks, Spectrographs, Observatories, Mercury cadmium telluride

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Proceedings Article | 13 December 2002 Paper

Paper

Update on the Subaru Cassegrain Instrument Automatic Exchanger Control System

Koji Omata, Tomonori Usuda, Masami Yutani, Tetsuo Nishimura, Shigeru Sawada

Proceedings Volume 4848, (2002) https://doi.org/10.1117/12.461268

KEYWORDS: Control systems, Telescopes, Infrared telescopes, Local area networks, LabVIEW, Infrared radiation, Signal processing, Astronomical telescopes, Astronomy, Observatories

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Proceedings Article | 16 August 2000 Paper

Paper

Test observation results from the mid-infrared imager MIRTOS for the Subaru Telescope

Daigo Tomono, Yoshiyuki Doi, Tetsuo Nishimura

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395545

KEYWORDS: Telescopes, Near infrared, Mirrors, Image stacking, Cameras, Spatial resolution, Mid-IR, Imaging systems, Infrared imaging, Stars

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Proceedings Article | 16 June 2000 Paper

Paper

Control of the Subaru telescope instrument exchanger system

Koji Omata, Tomonori Usuda, Masami Yutani, Takeshi Noguchi, Tetsuo Nishimura, Shigeru Sawada

Proceedings Volume 4009, (2000) https://doi.org/10.1117/12.388409

KEYWORDS: Computing systems, Control systems, Sensors, Telescopes, Photonic integrated circuits, CCD image sensors, Telecommunications, Local area networks, Switches, Magnetism

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Proceedings Article | 16 June 2000 Paper

Paper

CIAX: Cassegrain instrument auto exchanger for the Subaru telescope

Tomonori Usuda, Koji Omata, Masami Yutani, Yasuo Torii, Yoshitaka Mikami, Tetsuo Nishino, Takeshi Noguchi, Tetsuo Nishimura, Shigeru Sawada

Proceedings Volume 4009, (2000) https://doi.org/10.1117/12.388384

KEYWORDS: Connectors, Telescopes, Cesium, Optical fibers, Interfaces, Device simulation, Control systems, Optical simulations, Sensors, Astronomical telescopes

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Proceedings Article | 25 August 1998 Paper

Paper

Status of the coating facility of the Subaru Telescope

Saeko Hayashi, Yukiko Kamata, Tomio Kanzawa, Akihiko Miyashita, Masao Nakagiri, Tetsuo Nishimura, Takeshi Noguchi, Kiichi Okita, Norio Oshima, Goro Sasaki, Yasuo Torii, Masami Yutani, Tsuyoshi Ishikawa

Proceedings Volume 3352, (1998) https://doi.org/10.1117/12.319267

KEYWORDS: Mirrors, Coating, Telescopes, Reflectivity, Aluminum, Reflector telescopes, Metals, Infrared radiation, Observatories, Glasses

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Proceedings Article | 21 August 1998 Paper

Paper

Mid-infrared test observation system (MIRTOS) for Subaru

Daigo Tomono, Tetsuo Nishimura

Proceedings Volume 3354, (1998) https://doi.org/10.1117/12.317240

KEYWORDS: Cameras, Near infrared, Telescopes, Mirrors, Mid-IR, Staring arrays, Imaging systems, Image stacking, Diffraction, Black bodies

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Proceedings Article | 25 April 1997 Paper

Paper

Near-infrared two-wavelength shift-and-add

Daigo Tomono, Tetsuo Nishimura

Proceedings Volume 3019, (1997) https://doi.org/10.1117/12.275176

KEYWORDS: K band, Speckle, L band, Near infrared, Stars, Telescopes, Mirrors, Image stacking, Spatial resolution, Astronomy

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Proceedings Article | 21 March 1997 Paper

Paper

Subaru instrumentation plan and optical instruments

Masanori Iye, Hiroyasu Ando, Nobunari Kashikawa, Satoshi Miyazaki, Tetsuo Nishimura, Kunio Noguchi, Masashi Otsubo, Toshiyuki Sasaki, Kazuhiro Sekiguchi, Masaki Sekiguchi, Hideki Takami, Naruhisa Takato, Wataru Tanaka, Sadanori Okamura, Hiroshi Akahori, Masaharu Muramatsu

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.268991

KEYWORDS: Adaptive optics, Spectrographs, Charge-coupled devices, Cameras, Infrared radiation, Optical components, Telescopes, CCD cameras, Dispersion, Infrared imaging

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Proceedings Article | 21 March 1997 Paper

Paper

Infrared instrumentation for the Subaru Telescope

Tetsuo Nishimura, Saeko Hayashi, Noriyuki Kaifu, Naoto Kobayashi, Yukiyasu Kobayashi, Motohide Tamura, Hideki Takami, Tadafumi Takata, T. Yamashita, Hirokazu Kataza, Toshihiko Tanabe, Y. Ito, Takashi Miyata, A. Mori, Takashi Onaka, Daigo Tomono, Koji Murakawa, Hiroshi Shibai, Tetsuya Nagata, Fumihide Iwamuro, Toshinori Maihara, Kentaro Motohara, Shin Oya, Hiroyuki Tsukamoto, Lennox Cowie, Donald Hall, Klaus-Werner Hodapp, Joseph Hora, John Rayner, Alan Tokunaga

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.268992

KEYWORDS: Spectrographs, Infrared telescopes, Telescopes, Infrared radiation, Cameras, Imaging systems, Adaptive optics, Mirrors, Infrared astronomy, Space telescopes

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Showing 5 of 28 publications

Conference Committee Involvement (1)

Ground-based Telescopes

21 June 2004 | Glasgow, United Kingdom

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