Dr. Tomoyasu Yamamuro Profile

Dr. Tomoyasu Yamamuro

SPIE Involvement:

Author

Publications (33)

Proceedings Article | 30 August 2022 Poster + Paper

ULTIMATE-START: current status of the Subaru Tomography Adaptive optics Research experimenT

Koki Terao, Masayuki Akiyama, Yosuke Minowa, Yoshito Ono, Hajime Ogane, Takumi Akasawa, Shin Oya, Tomoyasu Yamamuro

Proceedings Volume 12185, 121856L (2022) https://doi.org/10.1117/12.2629652

KEYWORDS: Adaptive optics, Tomography, Near infrared, Turbulence, Relays, Prototyping

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SPIE Journal Paper | 4 February 2022 Open Access

High spatial resolution spectral imaging method for space interferometers and its application to formation flying small satellites

Taro Matsuo, Satoshi Ikari, Hirotaka Kondo, Sho Ishiwata, Shinichi Nakasuka, Tomoyasu Yamamuro

JATIS, Vol. 8, Issue 01, 015001, (February 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.015001

KEYWORDS: Interferometers, Sensors, Visibility, Imaging spectroscopy, Satellites, Spatial resolution, Interferometry, Astronomy, Beam splitters, Spectrographs

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SPIE Journal Paper | 11 March 2021 Open Access

Mid-infrared spectrometer and camera for the Origins Space Telescope

Itsuki Sakon, Thomas Roellig, Kimberly Ennico-Smith, Taro Matsuo, Yuji Ikeda, Tomoyasu Yamamuro, Keigo Enya, Takehiko Wada, Mitsunobu Kawada, Aoi Takahashi, Yuki Sarugaku, Naofumi Fujishiro, Naoshi Murakami, Jun Nishikawa, Takayuki Kotani, Shohei Goda, Masayuki Ido, Satoshi Itoh, Takahiro Tsuboi, Takahiro Sumi, Masatsugu Kamiura, Takeo Manome, Naoto Iida, Kentaro Yanagibashi, Thomas Greene, Bernardus Helvensteijn, Lynn Hofland, Roy Johnson, Ali Kashani, Emmett Quigley, Robert McMurray, Hanae Inami, Denis Burgarella, the Origins Space Telescope mission concept study team

JATIS, Vol. 7, Issue 01, 011013, (March 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.1.011013

KEYWORDS: Sensors, Spectroscopy, Mirrors, Cameras, Mid-IR, Space telescopes, Electronics, Telescopes, Detector arrays, Mercury cadmium telluride

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The mid-infrared spectrometer and camera transit spectrometer (MISC-T) is one of the three baseline instruments for Origins Space Telescope (Origins) and provides the capability to assess the habitability of nearby exoplanets and search for signs of life. MISC-T employs a densified pupil optical design, and HgCdTe and Si:As detector arrays. This optical design allows the instrument to be relatively insensitive to minor line-of-sight pointing drifts and telescope aberrations, and the detectors do not require a sub-Kelvin refrigerator. MISC-T has three science spectral channels that share the same field-of-view by means of beam splitters, and all channels are operated simultaneously to cover the full spectral range from 2.8 to 20 μm at once with exquisite stability and precision (<5 ppm between 2.8 to 11 μm, <20 ppm between 11 and 20 μm). A Lyot-coronagraph-based tip–tilt sensor located in the instrument fore-optics uses the light reflected by a field stop, which corresponds to 0.3% of the light from the target, to send fine pointing information to the field steering mirror in the Origins telescope. An additional MISC Wide Field Imager (WFI) is studied as an upscope option for the Origins. MISC-WFI offers a wide field imaging (3 ′ × 3 ′ ) and low-resolution spectroscopic capability with filters and grating-prisms (grisms) covering 5 to 28 μm. The imaging capability of the MISC-WFI will be used for general science objectives. The low-resolution spectroscopic capability in MISC-WFI with a resolving power R ( = λ / Δλ) of a few hundreds will be used to measure the mid-infrared dust features and ionic lines at z up to ∼1 in the Origins mission’s Rise of Metals and Black Hole Feedback programs. The MISC-WFI also serves as a focal plane pointing and guiding instrument for the observatory, including when the MISC-T channel is performing its exoplanet spectroscopy observations.

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Proceedings Article | 28 December 2020 Poster + Presentation + Paper

The South Africa Near-Infrared Doppler (SAND) instrument: concept and instrument design

Aoi Takahashi, Takayuki Kotani, Jun Nishikawa, Akitoshi Ueda, Masayuki Kuzuhara, Motohide Tamura, Takahiro Nagayama, Mikio Kurita, Takahiro Sumi, Tomoyasu Yamamuro, Bun'ei Sato, Teruyuki Hirano, Masashi Omiya

Proceedings Volume 11447, 114473E (2020) https://doi.org/10.1117/12.2560342

KEYWORDS: Doppler effect, Stars, Planets, Telescopes, Spectroscopy, Velocity measurements, Infrared radiation, Near infrared, Infrared telescopes, Active optics

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Proceedings Article | 16 December 2020 Poster + Paper

The mid-infrared spectrometer/camera (MISC) for the Origins Space Telescope

Itsuki Sakon, Thomas Roellig, Kimberly Ennico-Smith, Taro Matsuo, Yuji Ikeda, Tomoyasu Yamamuro, Keigo Enya

Proceedings Volume 11443, 114436K (2020) https://doi.org/10.1117/12.2561949

KEYWORDS: Spectroscopy, Mid-IR, Space telescopes, Optical design, Telescopes, Sensors, Exoplanets, Cameras, Mercury cadmium telluride, Detector arrays

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Proceedings Article | 13 December 2020 Poster + Paper

Laboratory experiment of densified pupil spectrograph for the Origins Space Telescope

T. Matsuo, T. Greene, R. Johnson, R. McMurray, T. Roellig, K. Ennico-Smith, B. Helvensteijn, A. Kashani, H. Shibai, T. Sumi, S. Itoh, I. Sakon, T. Yamamuro, Y. Ikeda, T. Manome, N. Iida, K. Yanagibashi, M. Kamiura

Proceedings Volume 11443, 114436D (2020) https://doi.org/10.1117/12.2560421

KEYWORDS: Spectrographs, Space telescopes, Prototyping, Cryogenics, Telescopes, Device simulation, Signal detection, Sensors, Optical aberrations, Mid-IR

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Proceedings Article | 13 December 2020 Poster + Paper

MuSCAT3: a 4-color simultaneous camera for the 2m Faulkes Telescope North

Norio Narita, Akihiko Fukui, Tomoyasu Yamamuro, Daniel Harbeck, Mark Bowman, Mark Elphick, Jon Nation, J.D. Armstrong, Jacqueline Han, Shunichi Abe, Masahiro Ikoma, Keisuke Isogai, Kiyoe Kawauchi, Seiya Kurita, Nobuhiko Kusakabe, Jerome de Leon, John Livingston, Mayuko Mori, Taku Nishiumi, Motohide Tamura, Noriharu Watanabe, Nikolaus Volgenau, Elisabeth Heinrich-Josties, Steve Foale, Matt Daily, Curtis McCully, Annie Kirby, Cary Smith, Brian Haworth, Patrick Conway, Lisa Storrie-Lombardi, Wayne Rosing, Joey Chatelain, Etienne Bachelet, Marshall Johnson, Markus Rabus

Proceedings Volume 11447, 114475K (2020) https://doi.org/10.1117/12.2559947

KEYWORDS: Telescopes, Cameras, Mirrors, Liquid crystal on silicon, Relays, Exoplanets, Lanthanum, Observatories, CCD cameras, Manufacturing

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Proceedings Article | 13 December 2020 Presentation + Paper

ULTIMATE-START: Subaru tomography adaptive optics research experiment project overview

Masayuki Akiyama, Yosuke Minowa, Yoshito Ono, Koki Terao, Hajime Ogane, Kaoru Oomoto, Yuta Iizuka, Shin Oya, Etsuko Mieda, Tomoyasu Yamamuro

Proceedings Volume 11448, 114481O (2020) https://doi.org/10.1117/12.2560872

KEYWORDS: Adaptive optics, Tomography, Wavefront sensors, Near infrared, Camera shutters, Cameras, Spectrographs, Optical tomography, Optical calibration, Telescopes

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SPIE Journal Paper | 27 December 2018 Open Access

MuSCAT2: four-color simultaneous camera for the 1.52-m Telescopio Carlos Sánchez

Norio Narita, Akihiko Fukui, Nobuhiko Kusakabe, Noriharu Watanabe, Enric Palle, Hannu Parviainen, Pilar Montañés-Rodríguez, Felipe Murgas, Matteo Monelli, Marta Aguiar, Jorge Andres Perez Prieto, Álex Oscoz, Jerome de Leon, Mayuko Mori, Motohide Tamura, Tomoyasu Yamamuro, Victor J. S. Béjar, Nicolas Crouzet, Diego Hidalgo, Peter Klagyivik, Rafael Luque, Taku Nishiumi

JATIS, Vol. 5, Issue 01, 015001, (December 2018) https://doi.org/10.1117/12.10.1117/1.JATIS.5.1.015001

KEYWORDS: Stars, Telescopes, Cameras, Charge-coupled devices, Planets, Photometry, Mirrors, S band, Observatories, Transmittance

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Proceedings Article | 1 August 2018 Paper

A highly stable spectrophotometric capability for the Origins Space Telescope (OST) mid-infrared imager, spectrometer, coronagraph (MISC)

Taro Matsuo, Tom Greene, Thomas Roellig, Robert McMurray, Roy Johnson, Ali Kashani, Shohei Goda, Masayuki Ido, Satoshi Ito, Takahiro Tsuboi, Tomoyasu Yamamuro, Yuji Ikeda, Hiroshi Shibai, Takahiro Sumi, Itsuki Sakon, Kimberly Ennico-Smith

Proceedings Volume 10698, 1069844 (2018) https://doi.org/10.1117/12.2311896

KEYWORDS: Spectrographs, Sensors, Spectroscopy, Telescopes, Stars, Space telescopes, Mid-IR, Planets, Mirrors, Imaging systems

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Proceedings Article | 24 July 2018 Presentation + Paper

The mid-infrared imager, spectrometer, coronagraph (MISC) for the Origins Space telescope (OST)

Itsuki Sakon, Thomas Roellig, Kimberly Ennico-Smith, Taro Matsuo, Yuji Ikeda, Tomoyasu Yamamuro, Naofumi Fujishiro, Keigo Enya, Aoi Takahashi, Takehiko Wada, Olivier Guyon, Takayuki Kotani, Jun Nishikawa, Naoshi Murakami, Yuki Sarugaku, Denis Burgarella

Proceedings Volume 10698, 1069817 (2018) https://doi.org/10.1117/12.2314177

KEYWORDS: Spectroscopy, Coronagraphy, Space telescopes, Imaging systems, Mid-IR, Imaging spectroscopy, Exoplanets, Sensors, Telescopes

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The Mid-infrared Imager, Spectrometer, Coronagraph (MISC) is one of the instruments studied both for the Origins Space Telescope (OST) Mission Concept 1 and 2. The MISC for OST Mission Concept 1 consists of the MISC imager and spectrometer module (MISC I and S), the MISC coronagraph module (MISC COR) and the MISC transit spectrometer module (MISC TRA). The MISC I and S offers (1) a wide field (3 arcminx3 arcmin) imaging and low-resolution spectroscopic capability with filters and grisms for 6-38 μm, (2) a medium-resolution (R~1,000) Integral Field Unit (IFU) spectroscopic capability for 5- 38 μm and (3) a high-resolution (R~25,000) slit spectroscopic capability for 12-18 μm and 25-36 μm. The MISC COR module employs PIAACMC coronagraphy method and covers 6-38 μm achieving 10-7 contrast at 0.5 arcsec from the central star. The MISC TRA module employs a densified pupil spectroscopic design to achieve 3-5 ppm of spectro-photometric stability and covers 5-26 μm with R=100-300. The MISC for OST Mission Concept 2 consists of the MISC wide field imager module (MISC WFI) and the MISC transit Spectrometer module (MISC TRA). The MISC WFI offers a wide field (3 arcmin ×3 arcmin) imaging and low-resolution spectroscopic capabilities with filters and grisms for 6-28μm. The MISC TRA module in the OST Mission Concept 2 also employs the densified pupil spectroscopic design to achieve <5 ppm of spectro-photometric stability and covers 4-22 μm with R=100-300. The highest ever spectrophotometric stability achieved by MISC TRA enables to detect bio-signatures (e.g., ozone, water, and methane) in habitable worlds in both primary and secondary transits of exoplanets and makes the OST a powerful tool to bring an revolutionary progress in exoplanet sciences. Combined with the spectroscopic capability in the FIR provided by other OST instruments, the MISC widens the wavelength coverage of OST down to 5μm, which makes the OST a powerful tool to diagnose the physical and chemical condition of the ISM using dust features, molecules lines and atomic and ionic lines. The MISC also provides the OST with a focal plane guiding function for the other OST science instruments as well as its own use.

Proceedings Article | 13 July 2018 Paper

The infrared Doppler (IRD) instrument for the Subaru telescope: instrument description and commissioning results

Takayuki Kotani, Motohide Tamura, Jun Nishikawa, Akitoshi Ueda, Masayuki Kuzuhara, Masashi Omiya, Jun Hashimoto, Masato Ishizuka, Teruyuki Hirano, Hiroshi Suto, Takashi Kurokawa, Tsukasa Kokubo, Takahiro Mori, Yosuke Tanaka, Ken Kashiwagi, Mihoko Konishi, Tomoyuki Kudo, Bun'ei Sato, Shane Jacobson, Klaus Hodapp, Donald Hall, Wako Aoki, Tomonori Usuda, Shogo Nishiyama, Tadashi Nakajima, Yuji Ikeda, Tomoyasu Yamamuro, Jun-Ichi Morino, Haruka Baba, Ko Hosokawa, Hiroyuki Ishikawa, Norio Narita, Eiichiro Kokubo, Yutaka Hayano, Hideyuki Izumiura, Eiji Kambe, Nobuhiko Kusakabe, Jungmi Kwon, Masahiro Ikoma, Yasunori Hori, Hidenori Genda, Akihiko Fukui, Yuka Fujii, Hajime Kawahara, Guyon Olivier, Nemanja Jovanovic, Hiroki Harakawa, Masahiko Hayashi, Masahide Hidai, Masahiro Machida, Taro Matsuo, Tetsuya Nagata, Masahiro Ogihara, Hideki Takami, Naruhisa Takato, Hiroshi Terada, Daehyeon Oh

Proceedings Volume 10702, 1070211 (2018) https://doi.org/10.1117/12.2311836

KEYWORDS: Stars, Spectroscopy, Telescopes, Sensors, Cameras, Error analysis, Mirrors, Infrared telescopes, Frequency combs, Adaptive optics

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Proceedings Article | 6 June 2018 Paper

A lightweight mirror made of a magnesium alloy for space-borne telescopes and instruments

K. Enya, O. Kirino, H. Nakagawa, Y. Kawamura, T. Yamamuro

Proceedings Volume 10690, 106902L (2018) https://doi.org/10.1117/12.2312612

KEYWORDS: Mirrors, Magnesium, Space telescopes, Lightweight mirrors, Surface roughness, Diamond machining

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SPIE Journal Paper | 27 August 2015 Open Access

MuSCAT: a multicolor simultaneous camera for studying atmospheres of transiting exoplanets

Norio Narita, Akihiko Fukui, Nobuhiko Kusakabe, Masahiro Onitsuka, Tsuguru Ryu, Kenshi Yanagisawa, Hideyuki Izumiura, Motohide Tamura, Tomoyasu Yamamuro

JATIS, Vol. 1, Issue 04, 045001, (August 2015) https://doi.org/10.1117/12.10.1117/1.JATIS.1.4.045001

KEYWORDS: Cameras, CCD cameras, Stars, Exoplanets, Charge-coupled devices, Telescopes, Mirrors, Photometry, Planets, Imaging systems

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Proceedings Article | 12 September 2014 Paper

A monolithic deformable mirror with latchable mechanical actuation (LATCHAMAN) for space-borne telescopes

Keigo Enya, Hirokazu Kataza, Mitsuhiro Fukushima, Kenji Mitsui, Norio Okada, Hikaru Iwashita, Kanae Haze, Aoi Takahashi, Takayuki Kotani, Tomoyasu Yamamuro, Hitomi Kobayashi

Proceedings Volume 9219, 92190P (2014) https://doi.org/10.1117/12.2075454

KEYWORDS: Mirrors, Space telescopes, Telescopes, Exoplanets, Prototyping, Stars, Wavefronts, Aluminum, Infrared telescopes, Deformable mirrors

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Proceedings Article | 28 July 2014 Paper

Okayama astrophysical observatory wide field camera

Kenshi Yanagisawa, Yasuhiro Shimizu, Kiichi Okita, Daisuke Kuroda, Hisashi Koyano, Hironori Tsutsui, Hiroyuki Toda, Hideyuki Izumiura, Michitoshi Yoshida, Kouji Ohta, Nobuyuki Kawai, Tomoyasu Yamamuro

Proceedings Volume 9147, 91476D (2014) https://doi.org/10.1117/12.2055438

KEYWORDS: Sensors, Telescopes, Glasses, Mirrors, Observatories, Cryogenics, Cameras, Optical filters, Gamma radiation, Infrared radiation

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Proceedings Article | 24 July 2014 Paper

TMT-AGE: wide field of regard multi-object adaptive optics for TMT

Masayuki Akiyama, Shin Oya, Yoshito Ono, Hideki Takami, Shinobu Ozaki, Yutaka Hayano, Ikuru Iwata, Kazuhiro Hane, Tong Wu, Tomoyasu Yamamuro, Yuji Ikeda

Proceedings Volume 9148, 914814 (2014) https://doi.org/10.1117/12.2056320

KEYWORDS: Galactic astronomy, Adaptive optics, Photovoltaics, Tomography, Point spread functions, Spectroscopy, Mirrors, Optical design, K band, Microelectromechanical systems

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Proceedings Article | 14 July 2014 Paper

Infrared Doppler instrument (IRD) for the Subaru telescope to search for Earth-like planets around nearby M-dwarfs

Takayuki Kotani, Motohide Tamura, Hiroshi Suto, Jun Nishikawa, Bun'ei Sato, Wako Aoki, Tomonori Usuda, Takashi Kurokawa, Ken Kashiwagi, Shogo Nishiyama, Yuji Ikeda, Donald Hall, Klaus Hodapp, Jun Hashimoto, Jun-Ichi Morino, Yasushi Okuyama, Yosuke Tanaka, Shota Suzuki, Sadahiro Inoue, Jungmi Kwon, Takuya Suenaga, Dehyun Oh, Haruka Baba, Norio Narita, Eiichiro Kokubo, Yutaka Hayano, Hideyuki Izumiura, Eiji Kambe, Tomoyuki Kudo, Nobuhiko Kusakabe, Masahiro Ikoma, Yasunori Hori, Masashi Omiya, Hidenori Genda, Akihiko Fukui, Yuka Fujii, Olivier Guyon, Hiroki Harakawa, Masahiko Hayashi, Masahide Hidai, Teruyuki Hirano, Masayuki Kuzuhara, Masahiro Machida, Taro Matsuo, Tetsuya Nagata, Hirohi Onuki, Masahiro Ogihara, Hideki Takami, Naruhisa Takato, Yasuhiro Takahashi, Chihiro Tachinami, Hiroshi Terada, Hajime Kawahara, Tomoyasu Yamamuro

Proceedings Volume 9147, 914714 (2014) https://doi.org/10.1117/12.2055075

KEYWORDS: Stars, Optical fibers, Planets, Spectroscopy, Adaptive optics, Optical benches, Frequency combs, Sensors, Infrared telescopes, Ceramics

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Proceedings Article | 21 September 2012 Paper

SPICA coronagraph instrument: characterization of atmospheres and physical parameters of giant planets by direct imaging and spectroscopy

T. Kotani, K. Enya, T. Nakagawa, H. Matsuhara, H. Kataza, M. Kawada, M. Mita, K. Komatsu, H. Uchida, K. Fujiwara, S. Mitani, S. Sakai, K. Haze, H. Kaneda, S. Oyabu, D. Ishihara, T. Miyata, S. Sako, T. Nakamura, K. Asano, M. Tamura, J. Nishikawa, T. Yamashita, N. Narita, H. Hayano, S. Oya, E. Kokubo, Y. Itoh, T. Matsuo, M. Fukagawa, H. Shibai, M. Honda, N. Baba, N. Murakami, Y. Okamoto, S. Ida, M. Takami, L. Abe, O. Guyon, T. Yamamuro

Proceedings Volume 8442, 84420F (2012) https://doi.org/10.1117/12.925832

KEYWORDS: Coronagraphy, Imaging spectroscopy, Planets, Stars, Exoplanets, Point spread functions, Spectroscopy, Spectroscopes, Telescopes, Binary data

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Proceedings Article | 21 September 2012 Paper

Prototype-testbed for infrared optics and coronagraph (PINOCO)

K. Enya, K. Haze, K. Arimatsu, H. Kataza, T. Wada, T. Kotani, L. Abe, T. Yamamuro

Proceedings Volume 8442, 84425C (2012) https://doi.org/10.1117/12.925524

KEYWORDS: Coronagraphy, Cryogenics, Infrared radiation, Mid-IR, Prototyping, Mirrors, Binary data, Interferometers, Infrared telescopes, Mechanics

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Proceedings Article | 21 September 2012 Paper

A laboratory experiment for a new free-standing pupil mask coronagraph

K. Haze, K. Enya, T. Kotani, L. Abe, T. Nakagawa, H. Matsuhara, T. Sato, T. Yamamuro

Proceedings Volume 8442, 84425B (2012) https://doi.org/10.1117/12.925845

KEYWORDS: Coronagraphy, Point spread functions, Photomasks, Infrared telescopes, Space telescopes, Infrared radiation, Numerical simulations, Exoplanets, Glasses, Refractive index

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Proceedings Article | 15 September 2011 Paper

A high dynamic-range instrument for SPICA for coronagraphic observation of exoplanets and monitoring of transiting exoplanets

K. Enya, L. Abe, S. Takeuchi, T. Kotani, T. Yamamuro

Proceedings Volume 8146, 81460Q (2011) https://doi.org/10.1117/12.893508

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Exoplanets, Prisms, Point spread functions, Infrared telescopes, Mirrors, Cryogenics, Wavefronts

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Proceedings Article | 20 July 2010 Paper

First Paschen alpha imaging from the ground: the first light of Atacama Near-Infrared Camera on the miniTAO 1m telescope

Kentaro Motohara, Masahiro Konishi, Koji Toshikawa, Natsuko Mitani, Shigeyuki Sako, Yuka Uchimoto, Tomoyasu Yamamuro, Takeo Minezaki, Toshihiko Tanabe, Takashi Miyata, Shintaro Koshida, Daisuke Kato, Ryo Ohsawa, Tomohiko Nakamura, Kentaro Asano, Yuzuru Yoshii, Mamoru Doi, Kotaro Kohno, Masuo Tanaka, Kimiaki Kawara, Toshihiro Handa, Tsutomu Aoki, Takao Soyano, Ken'ichi Tarusawa, Yoshifusa Ita

Proceedings Volume 7735, 77353K (2010) https://doi.org/10.1117/12.856102

KEYWORDS: Telescopes, Protactinium, Transmittance, Near infrared, Cameras, Mirrors, Optical filters, Space telescopes, Astronomy, Device simulation

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Proceedings Article | 25 July 2008 Paper

First light of UT 15-band dichroic-mirror camera

Mamoru Doi, Junji Hayano, Hiroyuki Utsunomiya, Yutaka Ihara, Kouichi Tokita, Shigeyuki Sako, Sadanori Okamura, Naohiro Takanashi, Tomoki Morokuma, Hisanori Furusawa, Hidehiko Nakaya, Yutaka Komiyama, Masafumi Yagi, Norio Okada, Akira Arai, Makoto Uemura, Koji Kawabata, Takuya Yamashita, Takashi Ohsugi, Hiroko Ito, Hanindyo Kuncarayakti, Masanao Abe, Sunao Hasegawa, Norihide Takeyama, Tomoyasu Yamamuro, Satoru Iwamura

Proceedings Volume 7014, 70140F (2008) https://doi.org/10.1117/12.788554

KEYWORDS: Mirrors, Charge-coupled devices, Telescopes, Cameras, Lenses, Collimators, Astronomy, Imaging systems, Spectrographs, Stars

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Proceedings Article | 12 July 2008 Paper

The Infrared Camera (IRC) for AKARI: in-flight imaging performance and the post cryogen mission

Takehiko Wada, Takashi Onaka, Hideo Matsuhara, Naofumi Fujishiro, Hideaki Fujiwara, Daisuke Ishihara, Yoshifusa Ita, Hirokazu Kataza, Woojung Kim, Toshio Matsumoto, Hiroshi Murakami, Youichi Ohyama, Shinki Oyabu, Itsuki Sakon, Toshihiko Tanabé, Tsutomu Tange, Toshinobu Takagi, Satoshi Takita, Kazunori Uemizu, Munetaka Ueno, Fumihiko Usui, Hidenori Watarai, Martin Cohen, Keigo Enya, Takafumi Ootsubo, Chris Pearson, Norihide Takeyama, Tomoyasu Yamamuro, Yuji Ikeda

Proceedings Volume 7010, 70100C (2008) https://doi.org/10.1117/12.789472

KEYWORDS: Sensors, Near infrared, Telescopes, Infrared cameras, Imaging spectroscopy, Cryogenics, Space telescopes, Mirrors, Helium, Point spread functions

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Proceedings Article | 9 July 2008 Paper

ANIR: Atacama near infrared camera for Paschen alpha imaging

Kentaro Motohara, Natsuko Mitani, Shigeyuki Sako, Yuka Uchimoto, Koji Toshikawa, Tomoyasu Yamamuro, Toshihiro Handa, Masuo Tanaka, Tsutomu Aoki, Mamoru Doi, Kimiaki Kawara, Kotaro Kohno, Takeo Minezaki, Takashi Miyata, Takao Soyano, Toshihiko Tanabe, Ken'ichi Tarusawa, Yuzuru Yoshii

Proceedings Volume 7014, 70142T (2008) https://doi.org/10.1117/12.788517

KEYWORDS: Sensors, Protactinium, Cameras, Telescopes, Mirrors, Near infrared, Optical filters, Image filtering, Observatories, Imaging systems

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Proceedings Article | 9 July 2008 Paper

ISLE: near-infrared imager/spectrograph for the 1.88m Telescope at Okayama Astrophysical Observatory

Kenshi Yanagisawa, Kiichi Okita, Yasuhiro Shimizu, Masaaki Otsuka, Shogo Nagayama, Ikuru Iwata, Shinobu Ozaki, Michitoshi Yoshida, Hidehiko Nakaya, Akito Tajitsu, Shin-ichiro Okumura, Tomoyasu Yamamuro

Proceedings Volume 7014, 701437 (2008) https://doi.org/10.1117/12.788905

KEYWORDS: Sensors, Telescopes, Observatories, Spectroscopy, Spectroscopes, Optical filters, Imaging spectroscopy, Spectral resolution, Image quality, Electrons

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SPIE Journal Paper | 1 August 2006

Measurement of refractive indices of 20 optical materials at low temperatures

Tomoyasu Yamamuro, Shuji Sato, Takahiro Zenno, Norihide Takeyama, Hideo Matsuhara, Ippei Maeda, Yoshio Matsueda

OE, Vol. 45, Issue 08, 083401, (August 2006) https://doi.org/10.1117/12.10.1117/1.2336241

KEYWORDS: Refractive index, Prisms, Temperature metrology, Sensors, Optical engineering, Glasses, Mirrors, Silica, Light sources, Collimators

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Proceedings Article | 29 June 2006 Paper

ISLE: a general purpose near-infrared imager and medium-resolution spectrograph for the 1.88-m telescope at Okayama Astrophysical Observatory

Kenshi Yanagisawa, Yasuhiro Shimizu, Kiichi Okita, Shogo Nagayama, Yasuhiko Sato, Hisashi Koyano, Takafumi Okada, Ikuru Iwata, Fumihiro Uraguchi, Etsuji Watanabe, Michitoshi Yoshida, Shin-ichiro Okumura, Hidehiko Nakaya, Tomoyasu Yamamuro

Proceedings Volume 6269, 62693Q (2006) https://doi.org/10.1117/12.670956

KEYWORDS: Sensors, Telescopes, Observatories, Cameras, Electronics, Mirrors, Digital signal processing, K band, Spectroscopy, Imaging spectroscopy

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Proceedings Article | 18 August 2005 Paper

Optical system of the 12-26 micron instrument (MIR-L) for ASTRO-F

Naofumi Fujishiro, Hideo Matsuhara, Yuji Ikeda, Tomoyasu Yamamuro, Norihide Takeyama, Takashi Onaka, Hirokazu Kataza, Takehiko Wada, Kazunori Uemizu, Itsuki Sakon, Chiaki Ihara, Daisuke Ishihara, Woojung Kim, Munetaka Ueno, Hidenori Watarai, Hiroshi Murakami

Proceedings Volume 5904, 59040I (2005) https://doi.org/10.1117/12.614503

KEYWORDS: Lenses, Cryogenics, Sensors, Telescopes, Optical filters, Point spread functions, Imaging spectroscopy, Spectroscopes, Spectroscopy, Optical design

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Proceedings Article | 12 October 2004 Paper

Optical design and performance of the 12- to 26-µm channel (MIR-L) of the infrared camera on board ASTRO-F

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.551538

KEYWORDS: Sensors, Infrared cameras, Point spread functions, Cryogenics, Spectroscopy, Optical design, Lenses, Telescopes, Zemax, Infrared radiation

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Proceedings Article | 7 March 2003 Paper

SIRIUS: a near-infrared simultaneous three-band camera

Takahiro Nagayama, Chie Nagashima, Yasushi Nakajima, Tetsuya Nagata, Shuji Sato, Hidehiko Nakaya, Tomoyasu Yamamuro, Koji Sugitani, Motohide Tamura

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.460770

KEYWORDS: Telescopes, Mirrors, Clocks, Cameras, Near infrared, Data acquisition, Infrared imaging, Optical filters, Camera shutters, Astronomy

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Proceedings Article | 21 August 1998 Paper

Multicolor imaging photometer for the MAGNUM project

Yukiyasu Kobayashi, Yuzuru Yoshii, Bruce Peterson, Takeo Minezaki, Keigo Enya, Masahiro Suganuma, Tomoyasu Yamamuro

Proceedings Volume 3354, (1998) https://doi.org/10.1117/12.317212

KEYWORDS: Infrared radiation, Infrared imaging, Charge-coupled devices, Sensors, Photometry, Beam splitters, Optical filters, Telescopes, Mirrors, Channel projecting optics

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