Prof. Masanori Iye Profile

Prof. Masanori Iye

Prof. Emeritus at National Astronomical Observatory of Japan

SPIE Involvement:

Author

Publications (79)

Proceedings Article | 21 November 2017 Open Access

Open Access

Paper

Grism and immersion grating for space telescope

Noboru Ebizuka, Kiko Oka, Akiko Yamada, Mami Ishikawa, Masako Kashiwagi, Kashiko Kodate, Yasuhiro Hirahara, Shuji Sato, Koji Kawabata, Moriaki Wakaki, Shin-ya Morita, Tomoyuki Simizu, Shaohui Yin, Hitoshi Omori, Masanori Iye

Proceedings Volume 10568, 105681M (2017) https://doi.org/10.1117/12.2308014

KEYWORDS: Diffraction gratings, Diffraction, Prisms, Spectrographs, Refractive index, Spectroscopy, Space telescopes, Germanium, Spectral resolution, Prototyping

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Proceedings Article | 22 July 2014 Paper

Paper

High volume production trial of mirror segments for the Thirty Meter Telescope

Tetsuji Oota, Mahito Negishi, Hirohiko Shinonaga, Akihiko Gomi, Yutaka Tanaka, Kotaro Akutsu, Itaru Otsuka, Shun Mochizuki, Masanori Iye, Takuya Yamashita

Proceedings Volume 9145, 91451J (2014) https://doi.org/10.1117/12.2055591

KEYWORDS: Mirrors, Telescopes, Polishing, Aspheric lenses, Off axis mirrors, Prototyping, Surface finishing, Data acquisition, Astronomy, Thirty Meter Telescope

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Proceedings Article | 22 July 2014 Paper

Paper

Preliminary design study of the TMT Telescope structure system: overview

Tomonori Usuda, Yutaka Ezaki, Noboru Kawaguchi, Kazuhiro Nagae, Atsushi Kato, Junji Takaki, Masaki Hirano, Tomoya Hattori, Masaki Tabata, Yasushi Horiuchi, Yusuke Saruta, Satoru Sofuku, Noboru Itoh, Takeharu Oshima, Takashi Takanezawa, Makoto Endo, Junji Inatani, Masanori Iye, Amir Sadjadpour, Mark Sirota, Scott Roberts, Larry Stepp

Proceedings Volume 9145, 91452F (2014) https://doi.org/10.1117/12.2055767

KEYWORDS: Telescopes, Optical instrument design, Computer aided design, Mirrors, Electroluminescence, Control systems design, Control systems, Earthquakes, Safety, Thirty Meter Telescope

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We present an overview of the preliminary design of the Telescope Structure System (STR) of Thirty Meter Telescope (TMT). NAOJ was given responsibility for the TMT STR in early 2012 and engaged Mitsubishi Electric Corporation (MELCO) to take over the preliminary design work. MELCO performed a comprehensive preliminary design study in 2012 and 2013 and the design successfully passed its Preliminary Design Review (PDR) in November 2013 and April 2014. Design optimizations were pursued to better meet the design requirements and improvements were made in the designs of many of the telescope subsystems as follows: 1. 6-legged Top End configuration to support secondary mirror (M2) in order to reduce deformation of the Top End and to keep the same 4% blockage of the full aperture as the previous STR design. 2. “Double Lower Tube” of the elevation (EL) structure to reduce the required stroke of the primary mirror (M1) actuators to compensate the primary mirror cell (M1 Cell) deformation caused during the EL angle change in accordance with the requirements. 3. M1 Segment Handling System (SHS) to be able to make removing and installing 10 Mirror Segment Assemblies per day safely and with ease over M1 area where access of personnel is extremely difficult. This requires semi-automatic sequence operation and a robotic Segment Lifting Fixture (SLF) designed based on the Compliance Control System, developed for controlling industrial robots, with a mechanism to enable precise control within the six degrees of freedom of position control. 4. CO₂ snow cleaning system to clean M1 every few weeks that is similar to the mechanical system that has been used at Subaru Telescope. 5. Seismic isolation and restraint systems with respect to safety; the maximum acceleration allowed for M1, M2, tertiary mirror (M3), LGSF, and science instruments in 1,000 year return period earthquakes are defined in the requirements. The Seismic requirements apply to any EL angle, regardless of the operational status of Hydro Static Bearing (HSB) system and stow lock pins. In order to find a practical solution, design optimization study for seismic risk mitigation was carried out extensively, including the performing of dynamic response analyses of the STR system under the time dependent acceleration profile of seven major earthquakes. The work is now moving to the final design phase from April 2014 for two years.

Proceedings Article | 13 September 2012 Paper

Paper

Recent development in real time control system of Subaru LGSAO-188

Masayuki Hattori, Mai Shirahata, Yosuke Minowa, Shin Oya, Yutaka Hayano, Hideki Takami, Masanori Iye

Proceedings Volume 8447, 84472P (2012) https://doi.org/10.1117/12.927227

KEYWORDS: Control systems, Adaptive optics, Space telescopes, Telescopes, Laser guide stars, Turbulence, Computing systems, Error analysis, Wavefront sensors, Optimization (mathematics)

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Proceedings Article | 13 September 2012 Paper

Paper

Subaru laser guide adaptive optics system: performance and science operation

Yosuke Minowa, Yutaka Hayano, Hiroshi Terada, Tae-Soo Pyo, Shin Oya, Masayuki Hattori, Mai Shirahata, Hideki Takami, Olivier Guyon, Vincent Garrel, Stephen Colley, Mark Weber, Taras Golota, Makoto Watanabe, Yoshihiko Saito, Meguru Ito, Masanori Iye

Proceedings Volume 8447, 84471F (2012) https://doi.org/10.1117/12.925543

KEYWORDS: Stars, Telescopes, Laser guide stars, Adaptive optics, Space telescopes, Mirrors, K band, Wavefront sensors, Cameras, Imaging spectroscopy

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Proceedings Article | 13 September 2012 Paper

Paper

Test production of a mirror segment for the Thirty Meter Telescope

Tetsuji Oota, Hirohiko Shinonaga, Kotaro Akutsu, Yuichiro Hashimoto, Itaru Otsuka, Yasushi Iwasaki, Masanori Iye, Takuya Yamashita, Hiroshi Akitaya, Ryuji Suzuki

Proceedings Volume 8450, 84502B (2012) https://doi.org/10.1117/12.926945

KEYWORDS: Mirrors, Polishing, Surface finishing, Telescopes, Monochromatic aberrations, Segmented mirrors, Interferometers, Astronomy, Off axis mirrors, Thirty Meter Telescope

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Proceedings Article | 29 July 2010 Paper

Paper

Visible low-order wavefront sensor for the Subaru LGSAO system

Makoto Watanabe, Meguro Ito, Shin Oya, Yutaka Hayano, Yosuke Minowa, Masayuki Hattori, Yoshihiko Saito, Sebastian Egner, Hideki Takami, Masanori Iye, Olivier Guyon, Vincent Garrel, Stephen Colley, Taras Golota

Proceedings Volume 7736, 77365H (2010) https://doi.org/10.1117/12.856845

KEYWORDS: Wavefront sensors, Avalanche photodetectors, Optical fibers, Adaptive optics, Sensors, Mirrors, Stars, Cameras, Laser guide stars, Beam splitters

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Proceedings Article | 29 July 2010 Paper

Paper

Performance of Subaru adaptive optics system AO188

Yosuke Minowa, Yutaka Hayano, Shin Oya, Makoto Watanabe, Masayuki Hattori, Olivier Guyon, Sebastian Egner, Yoshihiko Saito, Meguro Ito, Hideki Takami, Vincent Garrel, Stephen Colley, Taras Golota, Masanori Iye

Proceedings Volume 7736, 77363N (2010) https://doi.org/10.1117/12.857818

KEYWORDS: Stars, Point spread functions, Adaptive optics, Wavefronts, Telescopes, Wavefront sensors, Mirrors, Sensors, Photon counting, K band

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Proceedings Article | 29 July 2010 Paper

Paper

Recent development in real-time control system of Subaru adaptive optics including laser guide star mode

Masayuki Hattori, Stephen Colley, Vincent Garrel, Sebastian Egner, Taras Golota, Olivier Guyon, Meguro Ito, Yosuke Minowa, Shin Oya, Yoshihiko Saito, Makoto Watanabe, Yutaka Hayano, Hideki Takami, Masanori Iye

Proceedings Volume 7736, 77364M (2010) https://doi.org/10.1117/12.857710

KEYWORDS: Control systems, Adaptive optics, Laser guide stars, Sensors, Telescopes, Stars, Wavefronts, Control systems design, Sodium, Wavefront sensors

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Proceedings Article | 29 July 2010 Paper

Paper

The characteristics of laser-transmission and guide star's brightness for Subaru LGS/AO188 system

M. Ito, Y. Hayano, Y. Saito, H. Takami, M. Iye, M. Hattori, S. Oya, M. Watanabe, K. Akagawa, S. Colley, T. Golota, O. Guyon

Proceedings Volume 7736, 773651 (2010) https://doi.org/10.1117/12.856341

KEYWORDS: Sodium, Scanning probe microscopy, Laser scattering, Optical fibers, Scattering, Raman scattering, Telescopes, Fiber lasers, Laser guide stars, Pulsed laser operation

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Proceedings Article | 29 July 2010 Paper

Paper

Atmospheric dispersion correction for the Subaru AO system

Sebastian Egner, Yuji Ikeda, Makoto Watanabe, Y. Hayano, T. Golota, M. Hattori, M. Ito, Y. Minowa, S. Oya, Y. Saito, H. Takami, M. Iye

Proceedings Volume 7736, 77364V (2010) https://doi.org/10.1117/12.856579

KEYWORDS: Prisms, Atmospheric corrections, Adaptive optics, Atmospheric optics, Atmospheric sciences, Point spread functions, Telescopes, Mechanical engineering, Optical design, Visualization

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Proceedings Article | 29 July 2010 Paper

Paper

The performance of the laser guide star system for the Subaru Telescope

Yoshihiko Saito, Yutaka Hayano, Meguro Ito, Yosuke Minowa, Sebastian Egner, Shin Oya, Makoto Watanabe, Masayuki Hattori, Vincent Garrel, Kazuyuki Akagawa, Olivier Guyon, Stephen Colley, Taras Golota, Norihito Saito, Akira Takazawa, Mayumi Ito, Hideki Takami, Satoshi Wada, Masanori Iye

Proceedings Volume 7736, 773653 (2010) https://doi.org/10.1117/12.856484

KEYWORDS: Telescopes, Fiber lasers, Sodium, Control systems, Laser guide stars, Laser systems engineering, Electroluminescence, Collimation, Mirrors, Diagnostics

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Proceedings Article | 29 July 2010 Paper

Paper

Tip/tilt offload of Subaru AO188 by telescope secondary mirror

Shin Oya, Masayuki Hattori, Yosuke Minowa, Satoru Negishi, Daigo Tomono, Hiroshi Terada, Tae-Soo Pyo, Makoto Watanabe, Megru Ito, Yoshihiko Saito, Sebastian Egner, Yutaka Hayano, Hideki Takami, Masanori Iye, Olivier Guyon, Vincent Garrel, Stephen Colley, Taras Golota

Proceedings Volume 7736, 77363U (2010) https://doi.org/10.1117/12.857387

KEYWORDS: Telescopes, Mirrors, Adaptive optics, Telecommunications, Secondary tip-tilt mirrors, Infrared telescopes, Digital signal processing, Control systems, Infrared radiation, Data conversion

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Proceedings Article | 28 July 2010 Paper

Paper

Commissioning status of Subaru laser guide star adaptive optics system

Yutaka Hayano, Hideki Takami, Shin Oya, Masayuki Hattori, Yoshihiko Saito, Makoto Watanabe, Olivier Guyon, Yosuke Minowa, Sebastian Egner, Meguru Ito, Vincent Garrel, Stephen Colley, Taras Golota, Masanori Iye

Proceedings Volume 7736, 77360N (2010) https://doi.org/10.1117/12.857567

KEYWORDS: Laser guide stars, Telescopes, Stars, Wavefront sensors, Adaptive optics, Mirrors, Wavefronts, Deformable mirrors, Laser systems engineering, Fiber lasers

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Proceedings Article | 23 July 2010 Paper

Paper

Studies on evaluating and removing subsurface damage on the ground surface of CLEARCERAM-Z HS

Hiroshi Akitaya, Takuya Yamashita, Norio Ohshima, Masanori Iye, Toshinori Maihara, Hitoshi Tokoro, Keisuke Takahashi

Proceedings Volume 7739, 77392E (2010) https://doi.org/10.1117/12.856645

KEYWORDS: Surface finishing, Magnetorheological finishing, Etching, Polishing, Segmented mirrors, HF etching, Abrasives, Mirrors, Lens grinding equipment, Thirty Meter Telescope

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Proceedings Article | 16 July 2010 Paper

Paper

Performance characterization of the HiCIAO instrument for the Subaru Telescope

Ryuji Suzuki, Tomoyuki Kudo, Jun Hashimoto, Joseph Carson, Sebastian Egner, Miwa Goto, Masayuki Hattori, Yutaka Hayano, Klaus Hodapp, Meguro Ito, Masanori Iye, Shane Jacobson, Ryo Kandori, Nobuhiko Kusakabe, Masayuki Kuzuhara, Taro Matsuo, Michael Mcelwain, Jun-Ichi Morino, Shin Oya, Yoshihiko Saito, Richard Shelton, Vern Stahlberger, Hiroshi Suto, Hideki Takami, Christian Thalmann, Makoto Watanabe, Hubert Yamada, Motohide Tamura

Proceedings Volume 7735, 773530 (2010) https://doi.org/10.1117/12.857361

KEYWORDS: K band, Stars, Sensors, Distortion, Telescopes, Planets, Coronagraphy, Speckle pattern, Point spread functions, Adaptive optics

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Proceedings Article | 23 July 2008 Paper

Paper

Application of zero-expansion pore-free ceramics to a mirror of an astronomical telescope

Hiroshi Akitaya, Masanori Iye, Kiichi Okita, Motoyasu Sato, Hiroyuki Matsuo, Takeshi Itazu, Takeshi Uno, Masao Yamaguchi, Zen-ei Tanaka, Takuya Yamashita, Koji Kawabata, Makoto Uemura, Mikio Kurita

Proceedings Volume 7018, 70183H (2008) https://doi.org/10.1117/12.788884

KEYWORDS: Mirrors, Ceramics, Telescopes, Glasses, Astronomical telescopes, Aspheric lenses, Polishing, Manufacturing, Surface finishing, Lens grinding equipment

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Proceedings Article | 23 July 2008 Paper

Paper

Novel direct vision prism and Wollaston prism assembly for diffraction limit applications

Noboru Ebizuka, Hideo Yokota, Fumiyoshi Kajino, Koji Kawabata, Masanori Iye, Shuji Sato

Proceedings Volume 7018, 70184S (2008) https://doi.org/10.1117/12.788528

KEYWORDS: Prisms, Diffraction, Refractive index, Spectroscopy, Glasses, Crystals, Diffraction gratings, Solids, Fourier transforms, Titanium dioxide

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Proceedings Article | 15 July 2008 Paper

Paper

Development of a dichroic beam splitter for Subaru AO188

Yosuke Minowa, Hideki Takami, Makoto Watanabe, Yutaka Hayano, Masaaki Miyake, Masanori Iye, Shin Oya, Masayuki Hattori, Naoshi Murakami, Olivier Guyon, Yoshihiko Saito, Meguru Itoh, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota

Proceedings Volume 7015, 701561 (2008) https://doi.org/10.1117/12.788597

KEYWORDS: Beam splitters, Transmittance, Optical coatings, Thin film coatings, Humidity, Near infrared, Telescopes, Adaptive optics, Thorium, Absorption

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Proceedings Article | 15 July 2008 Paper

Paper

Implementation of 188-element curvature-based wavefront sensor and calibration source unit for the Subaru LGSAO system

Makoto Watanabe, Shin Oya, Yutaka Hayano, Hideki Takami, Masayuki Hattori, Yosuke Minowa, Yoshihiko Saito, Meguru Ito, Naoshi Murakami, Masanori Iye, Olivier Guyon, Stephen Colley, Michael Eldred, Taras Golota, Matthew Dinkins

Proceedings Volume 7015, 701564 (2008) https://doi.org/10.1117/12.789882

KEYWORDS: Adaptive optics, Calibration, Wavefront sensors, Mirrors, Avalanche photodetectors, Stars, Laser guide stars, Cameras, Telescopes, Optical fibers

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Proceedings Article | 14 July 2008 Paper

Paper

Characterization of vibrating shape of a bimorph deformable mirror

Shin Oya, Yosuke Minowa, Masayuki Hattori, Makoto Watanabe, Yutaka Hayano, Megru Itoh, Yoshihiko Saito, Hideki Takami, Masanori Iye, Olivier Guyon, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota

Proceedings Volume 7015, 70153R (2008) https://doi.org/10.1117/12.789600

KEYWORDS: Deformable mirrors, Adaptive optics, Sensors, Spectrum analysis, Mirrors, Finite element methods, Telescopes, Control systems, Shape analysis, Optical amplifiers

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Proceedings Article | 14 July 2008 Paper

Paper

High redshift galaxy surveys

Masanori Iye

Proceedings Volume 7016, 701602 (2008) https://doi.org/10.1117/12.807875

KEYWORDS: Galactic astronomy, Lanthanum, Stars, Hydrogen, Gamma radiation, Spectroscopy, Ultraviolet radiation, Charge-coupled devices, Galaxy groups and clusters, Hubble Space Telescope

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Proceedings Article | 10 July 2008 Paper

Paper

Current status of the laser guide star adaptive optic system for Subaru Telescope

Yutaka Hayano, Hideki Takami, Olivier Guyon, Shin Oya, Masayuki Hattori, Yoshihiko Saito, Makoto Watanabe, Naoshi Murakami, Yosuke Minowa, Meguru Ito, Stephen Colley, Michael Eldred, Taras Golota, Matthew Dinkins, Nobunari Kashikawa, Masanori Iye

Proceedings Volume 7015, 701510 (2008) https://doi.org/10.1117/12.789992

KEYWORDS: Adaptive optics, Telescopes, Stars, Laser guide stars, K band, Gold vapor lasers, Optical fibers, Waveguides, Sodium, Point spread functions

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Proceedings Article | 9 July 2008 Paper

Paper

Optimal fabrication of volume phase holographic grism with high efficiency and high dispersion, and its applications for astronomical observation

Kaoru Nakajima, Noboru Ebizuka, Masanori Iye, Kashiko Kodate

Proceedings Volume 7014, 70141Q (2008) https://doi.org/10.1117/12.790107

KEYWORDS: Diffraction gratings, Diffraction, Refractive index, Modulation, Astronomy, Prisms, Telescopes, Wavefronts, Holography, K band

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Proceedings Article | 9 July 2008 Paper

Paper

Cryogenic VPH grisms for MOIRCS

Takashi Ichikawa, Kotaro Ichiyama, Noboru Ebizuka, Chihiro Murata, Yuichiro Taniguchi, Tsutomu Okura, Masakazu Harashima, Yuka Katsuno Uchimoto, Miyoko Maruyama, Masanori Iye, Kazuhiro Shimasaku

Proceedings Volume 7014, 70141S (2008) https://doi.org/10.1117/12.788051

KEYWORDS: Cryogenics, Astronomy, Temperature metrology, Spectral resolution, Prisms, Spectrographs, Infrared radiation, Telescopes, Glasses, Galactic astronomy

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Proceedings Article | 19 September 2007 Paper

Paper

TOPS: a small space telescope using phase induced-amplitude apodization (PIAA) to image rocky and giant exo-planets

Olivier Guyon, James R. P. Angel, Charles Bowers, James Burge, Adam Burrows, Johanan Codona, Thomas Greene, Masanori Iye, James Kasting, Hubert Martin, Donald McCarthy, Victoria Meadows, Michael Meyer, Eugene Pluzhnik, Norman Sleep, Motohide Tamura, Domenick Tenerelli, Robert Vanderbei, Bruce Woodgate, Robert Woodruff, Neville Woolf

Proceedings Volume 6693, 66930J (2007) https://doi.org/10.1117/12.735160

KEYWORDS: Coronagraphy, Planets, Telescopes, Wavefronts, Stars, Apodization, Mirrors, Space telescopes, Wavefront sensors, Optics manufacturing

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Proceedings Article | 12 December 2006 Paper

Paper

Development of all-solid-state coherent 589 nm light source: toward the realization of sodium lidar and laser guide star adaptive optics

Norihito Saito, Kazuyuki Akagawa, Mayumi Kato, Akira Takazawa, Yutaka Hayano, Yoshihiko Saito, Meguru Ito, Hideki Takami, Masanori Iye, Satoshi Wada

Proceedings Volume 6409, 64091H (2006) https://doi.org/10.1117/12.697363

KEYWORDS: Sodium, Mode locking, Nd:YAG lasers, Light sources, Adaptive optics, LIDAR, Nonlinear crystals, Thermal effects, Laser guide stars, Crystals

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Proceedings Article | 7 July 2006 Paper

Paper

Telescope to Observe Planetary Systems (TOPS): a high throughput 1.2-m visible telescope with a small inner working angle

Olivier Guyon, James R. Angel, Charles Bowers, James Burge, Adam Burrows, Johanan Codona, Thomas Greene, Masanori Iye, James Kasting, Hubert Martin, Donald McCarthy, Jr., Victoria Meadows, Michael Meyer, Eugene Pluzhnik, Norman Sleep, Tony Spears, Motohide Tamura, Domenick Tenerelli, Robert Vanderbei, Bruce Woodgate, Robert Woodruff, Neville Woolf

Proceedings Volume 6265, 62651R (2006) https://doi.org/10.1117/12.672498

KEYWORDS: Coronagraphy, Planets, Mirrors, Wavefronts, Space telescopes, Telescopes, Wavefront sensors, Stars, Apodization, Phase modulation

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Proceedings Article | 6 July 2006 Paper

Paper

Novel immersion grating, VPH grating, and quasi-Bragg grating

Noboru Ebizuka, Keiko Oka, Akiko Yamada, Masako Kashiwagi, Kashiko Kodate, Koji Kawabata, Mariko Uehara, Chie Nagashima, Kotaro Ichiyama, Takashi Ichikawa, Tomoyuki Shimizu, Shinya Morita, Yutaka Yamagata, Hitoshi Omori, Hitoshi Tokoro, Yasuhiro Hirahara, Shuji Sato, Masanori Iye

Proceedings Volume 6273, 62732G (2006) https://doi.org/10.1117/12.671100

KEYWORDS: Diffraction gratings, Spectrographs, Prisms, Diffraction, Telescopes, Space telescopes, Reflection, Mirrors, Spectral resolution, Astronomy

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Proceedings Article | 28 June 2006 Paper

Paper

The laser guide star facility for Subaru Telescope

Yutaka Hayano, Yoshihiko Saito, Meguru Ito, Norihito Saito, Mayumi Kato, Kazuyuki Akagawa, Akira Takazawa, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota, Olivier Guyon, Masayuki Hattori, Shin Oya, Makoto Watanabe, Hideki Takami, Satoshi Wada, Masanori Iye

Proceedings Volume 6272, 627247 (2006) https://doi.org/10.1117/12.672583

KEYWORDS: Telescopes, Laser guide stars, Adaptive optics, Fiber lasers, Space telescopes, Laser systems engineering, Relays, Astronomy, Photonic crystal fibers, Diagnostics

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Proceedings Article | 28 June 2006 Paper

Paper

Transmission characteristics of high-power 589-nm laser beam in photonic crystal fiber

Meguru Ito, Yutaka Hayano, Norihito Saito, Kazuyuki Akagawa, Mayumi Kato, Yoshihiko Saito, Akira Takazawa, Hideki Takami, Masanori Iye, Satoshi Wada, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota, Olivier Guyon, Masayuki Hattori, Shin Oya, Makoto Watanabe

Proceedings Volume 6272, 627245 (2006) https://doi.org/10.1117/12.671972

KEYWORDS: Polarization, Laser scattering, Scattering, Optical fibers, Raman scattering, Telescopes, Relays, Sodium, Fiber lasers, Light scattering

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We are developing Laser Guide Star Adaptive Optics (LGSAO) system for Subaru Telescope at Hawaii, Mauna Kea. We achieved an all-solid-state 589.159 nm laser in sum-frequency generation. Output power at 589.159 nm reached 4W in quasi-continuous-wave operation. To relay the laser beam from laser location to laser launching telescope, we used an optical fiber because the optical fiber relay is more flexible and easier than mirror train. However, nonlinear scattering effect, especially stimulated Raman scattering (SRS) and stimulated Brillouin scattering (SBS), will happen when the inputted laser power increases, i.e., intensity at the fiber core exceed each threshold. In order to raise the threshold levels of each nonlinear scattering, we adopt photonic crystal fiber (PCF). Because the PCF can be made larger core than usual step index fiber (SIF), one can reduce the intensity in the core. We inputted the high power laser into the PCF whose mode field diameter (MFD) is 14 μm and the SIF whose MFD is 5 μm, and measured the transmission characteristics of them. In the case of the SIF, the SRS was happen when we inputted 2 W. On the other hand, the SRS and the SBS were not induced in the PCF even for an input power of 4 W. We also investigated polarization of the laser beam transmitting through the PCF. Because of the fact that the backscattering efficiency of exciting the sodium layer with a narrowband laser is dependent on the polarization state of the incident beam, we tried to control the polarization of the laser beam transmitted the PCF. We constructed the system which can control the polarization of input laser and measure the output polarization. The PCF showed to be able to assume as a double refraction optical device, and we found that the output polarization is controllable by injecting beam with appropriate polarization through the PCF. However, the Laser Guide Star made by the beam passed through the PCF had same brightness as the state of the polarization.

Proceedings Article | 28 June 2006 Paper

Paper

589 nm sum-frequency generation laser for the LGS/AO of Subaru Telescope

Yoshihiko Saito, Yutaka Hayano, Norihito Saito, Kazuyuki Akagawa, Akira Takazawa, Mayumi Kato, Meguru Ito, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota, Olivier Guyon, Masayuki Hattori, Shin Oya, Makoto Watanabe, Hideki Takami, Masanori Iye, Satoshi Wada

Proceedings Volume 6272, 627246 (2006) https://doi.org/10.1117/12.671964

KEYWORDS: Mode locking, Nd:YAG lasers, Laser guide stars, Laser development, Nonlinear crystals, Fiber lasers, Laser systems engineering, Telescopes, Oscillators, Sodium

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Proceedings Article | 28 June 2006 Paper

Paper

SUPY: an infrared pyramid wavefront sensor for Subaru

M. Feldt, Y. Hayano, H. Takami, T. Usuda, M. Watanabe, M. Iye, M. Goto, P. Bizenberger, S. Egner, D. Peter

Proceedings Volume 6272, 62722A (2006) https://doi.org/10.1117/12.671248

KEYWORDS: Sensors, Adaptive optics, Wavefront sensors, Infrared sensors, Telescopes, Stars, Device simulation, Infrared radiation, Calibration, Mirrors

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Proceedings Article | 28 June 2006 Paper

Paper

Performance of the deformable mirror for Subaru LGSAO

Shin Oya, Aurelien Bouvier, Olivier Guyon, Makoto Watanabe, Yutaka Hayano, Hideki Takami, Masanori Iye, Masayuki Hattori, Yoshihiko Saito, Meguru Itoh, Stephen Colley, Matthew Dinkins, Michael Eldred, Taras Golota

Proceedings Volume 6272, 62724S (2006) https://doi.org/10.1117/12.670773

KEYWORDS: Deformable mirrors, Finite element methods, Electrodes, Adaptive optics, Glasses, Ferroelectric materials, Data modeling, Telescopes, Mirrors, Laser optics

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Proceedings Article | 27 June 2006 Paper

Paper

Implementation of modal optimization system of Subaru-188 adaptive optics

Masayuki Hattori, Taras Golota, Guyon Olivier, Matthew Dinkins, Shin Oya, Stephen Colley, Michael Eldred, Makoto Watanabe, Meguru Itoh, Yoshihiko Saito, Yutaka Hayano, Hideki Takami, Masanori Iye

Proceedings Volume 6272, 62725G (2006) https://doi.org/10.1117/12.671027

KEYWORDS: Adaptive optics, Wavefronts, Servomechanisms, Optimization (mathematics), Control systems, Telescopes, Mirrors, Error analysis, Stars, Wavefront sensors

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Proceedings Article | 27 June 2006 Paper

Paper

Status of Subaru laser guide star AO system

Hideki Takami, Stephen Colley, Matt Dinkins, Michael Eldred, Olivier Guyon, Taras Golota, Masayuki Hattori, Yutaka Hayano, Meguru Ito, Masanori Iye, Shin Oya, Yoshihiko Saito, Makoto Watanabe

Proceedings Volume 6272, 62720C (2006) https://doi.org/10.1117/12.670568

KEYWORDS: Adaptive optics, Laser guide stars, Telescopes, Mirrors, Wavefront sensors, Fiber lasers, Sensors, Avalanche photodetectors, Stars, Laser systems engineering

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Proceedings Article | 27 June 2006 Paper

Paper

Current and future Subaru instruments

M. Iye

Proceedings Volume 6269, 626905 (2006) https://doi.org/10.1117/12.672806

KEYWORDS: Spectrographs, Telescopes, Adaptive optics, Cameras, Infrared cameras, Astronomical imaging, Infrared radiation, Spectroscopes, Imaging systems, Cesium

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Proceedings Article | 23 December 2004 Paper

Paper

Cassegrain and Nasmyth adaptive optics systems of 8.2-m Subaru telescope

Masanori Iye, Hideki Takami, Naruhisa Takato, Shin Oya, Yutaka Hayano, Olivier Guyon, Stephen Colley, Masayuki Hattori, M. Watanabe, Michael Eldred, Yoshihiko Saito, N. Saito, Kazuyuki Akagawa, Satoshi Wada

Proceedings Volume 5639, (2004) https://doi.org/10.1117/12.581238

KEYWORDS: Adaptive optics, Telescopes, Stars, Mirrors, Wavefront sensors, K band, Laser systems engineering, Wavefronts, Deformable mirrors, Control systems

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Proceedings Article | 25 October 2004 Paper

Paper

Laser guide star AO project at the Subaru Telescope

Hideki Takami, Makoto Watanabe, Naruhisa Takato, Stephen Colley, Michael Eldred, Thomas Kane, Olivier Guyon, Masayuki Hattori, Miwa Goto, Masanori Iye, Yutaka Hayano, Yukiko Kamata, Nobou Arimoto, Naoto Kobayashi, Yosuke Minowa

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.550839

KEYWORDS: Adaptive optics, Laser guide stars, Mirrors, Wavefront sensors, Telescopes, Sensors, Stars, Deformable mirrors, Avalanche photodetectors, Control systems

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Proceedings Article | 25 October 2004 Paper

Paper

Design of the Subaru laser guide star adaptive optics module

Makoto Watanabe, Hideki Takami, Naruhisa Takato, Stephen Colley, Michael Eldred, Thomas Kane, Olivier Guyon, Masayuki Hattori, Miwa Goto, Masanori Iye, Yutaka Hayano, Yukiko Kamata, Nobuo Arimoto, Naoto Kobayashi, Yosuke Minowa

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551032

KEYWORDS: Mirrors, Adaptive optics, Telescopes, Sensors, Wavefront sensors, Avalanche photodetectors, Stars, Wavefronts, Laser guide stars, Infrared telescopes

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Proceedings Article | 25 October 2004 Paper

Paper

Deformable mirror design of Subaru LGSAO system

Shin Oya, Olivier Guyon, Makoto Watanabe, Yutaka Hayano, Hideki Takami, Masanori Iye, Nobuo Arimoto, Stephen Colley, Michael Eldred, Thomas Kane, Masayuki Hattori, Yoshihiko Saito, Yukiko Kamata, Naoto Kobayashi, Yosuke Minowa, Miwa Goto, Naruhisa Takato

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551907

KEYWORDS: Deformable mirrors, Adaptive optics, Laser optics, Ferroelectric materials, Finite element methods

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Proceedings Article | 25 October 2004 Paper

Paper

Design of laser system for Subaru LGS AO

Yutaka Hayano, Yoshihiko Saito, Norihito Saito, Kazuyuki Akagawa, Yukiko Kamata, Tomio Kanzawa, Tomio Kurakami, Naruhisa Takato, Stephen Colley, Michael Eldred, Thomas Kane, Olivier Guyon, Shin Oya, Makoto Watanabe, Masayuki Hattori, Taras Golota, Matthew Dinkins, Naoto Kobayashi, Yosuke Minowa, Miwa Goto, Nobuo Arimoto, Satoshi Wada, Hideki Takami, Masanori Iye

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551015

KEYWORDS: Fiber lasers, Telescopes, Laser systems engineering, Laser guide stars, Adaptive optics, Optics manufacturing, Relays, Laser development, Laser optics, Mode locking

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Proceedings Article | 25 October 2004 Paper

Paper

Subaru Telescope LGSAO: overview of expected performance

Olivier Guyon, Nobuo Arimoto, Celia Blain, Stephen Colley, Michael Eldred, Miwa Goto, Masayuki Hattori, Yutaka Hayano, Masanori Iye, Yukiko Kamata, Thomas Kane, Naoto Kobayashi, Makoto Watanabe, Yosuke Minowa, Shin Oya, Yoshihiko Saito, Hideki Takami, Naruhisa Takato

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551942

KEYWORDS: Adaptive optics, Stars, Electrodes, Telescopes, Laser guide stars, Wavefronts, Wavefront sensors, Actuators, Wave propagation, Sensors

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Proceedings Article | 25 October 2004 Paper

Paper

Subaru adaptive optics system after two years of open use

Shin Oya, Naruhisa Takato, Hideki Takami, Yutaka Hayano, Masanori Iye, Hiroshi Terada, Koji Murakawa, Yosuke Minowa, Masayuki Hattori, Makoto Watanabe, Yukiko Kamata, Tomio Kanzawa, Thomas Kane, Wolfgang Gaessler

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551814

KEYWORDS: Adaptive optics, Wavefront sensors, Deformable mirrors, Telescopes

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Proceedings Article | 30 September 2004 Paper

Paper

Subaru instrumentation: today and tomorrow

Masanori Iye

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.552485

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

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Proceedings Article | 29 September 2004 Paper

Paper

An experiment for developing a micro-crack alert system for large thin mirror

Naruhisa Takato, Ryuji Miyagawa, Kiyoshi Shigemori, Masanori Iye, Kiichi Okita, Akihiko Miyashita, Toshiyuki Sasaki, Tomonori Usuda, Masuo Sonoda, Hiroshi Kubota

Proceedings Volume 5495, (2004) https://doi.org/10.1117/12.552453

KEYWORDS: Mirrors, Sensors, Telescopes, Signal detection, Transducers, Acoustic emission, Wave propagation, Signal attenuation, Acoustics, Lead

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Proceedings Article | 28 September 2004 Paper

Paper

Concept study of Japan Extremely Large Telescope

Masanori Iye, Jelt Wg

Proceedings Volume 5489, (2004) https://doi.org/10.1117/12.552290

KEYWORDS: Mirrors, Telescopes, Surface finishing, Large telescopes, Polishing, Adaptive optics, Cements, Optical design, Aspheric lenses, Aspheric optics

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Proceedings Article | 24 September 2004 Paper

Paper

Optimal design and fabrication of high dispersion VPH grism for Subaru Telescope

Masako Kashiwagi, Keiko Oka, Misako Irisawa, Noboru Ebizuka, Masanori Iye, Kashiko Kodate

Proceedings Volume 5494, (2004) https://doi.org/10.1117/12.551038

KEYWORDS: Diffraction gratings, Diffraction, Refractive index, Modulation, Prisms, Glasses, Optical design, Holography, Telescopes, Light sources

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Proceedings Article | 7 July 2004 Paper

Paper

Japan’s future planning of optical/infrared astronomy

Masanori Iye

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566120

KEYWORDS: Telescopes, Adaptive optics, Surface finishing, Space telescopes, Astronomy, Cements, Astronomical imaging, Space operations, Mirrors, Polishing

Read Abstract +

Proceedings Article | 7 March 2003 Paper

Paper

Properties of FOCAS optical components

Koji Kawabata, Noboru Ebizuka, Toshiyuki Sasaki, Kazuhiro Sekiguchi, Masanori Iye, Kentaro Aoki, Ryo Asai, Motoko Inata, Nobunari Kashikawa, George Kosugi, Youichi Ohyama, Kiichi Okita, Tomohiko Ozawa, Yoshihiko Saito, Yasuhiro Shimizu, Hiroko Taguchi, Tadafumi Takata, Yasushi Yadoumaru, Michitoshi Yoshida

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461923

KEYWORDS: Optical components, Prisms, Telescopes, Imaging spectroscopy, Spectral resolution, Polarimetry, Charge-coupled devices, Optical filters, Spectroscopy, Manufacturing

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Proceedings Article | 7 March 2003 Paper

Paper

Multi-object spectroscopy of FOCAS: software and its performance

Yoshihiko Saito, Youichi Ohyama, Nobunari Kashikawa, Michitoshi Yoshida, Toshiyuki Sasaki, George Kosugi, Tadafumi Takata, Yasuhiro Shimizu, Motoko Inata, Kiichi Okita, Kentaro Aoki, Kazuhiro Sekiguchi, Koji Kawabata, Ryo Asai, Hiroko Taguchi, Noboru Ebizuka, Yasushi Yadoumaru, Tomohiko Ozawa, Masanori Iye

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.462588

KEYWORDS: Molybdenum, Telescopes, Distortion, Charge-coupled devices, Target acquisition, Astronomical imaging, Stars, Imaging spectroscopy, Laser cutting, Observatories

Read Abstract +

Proceedings Article | 13 February 2003 Paper

Paper

Scientific results with the Subaru Telescope

Masanori Iye

Proceedings Volume 4834, (2003) https://doi.org/10.1117/12.456649

KEYWORDS: Galactic astronomy, Stars, Telescopes, Absorption, Magnesium, Clouds, Lead, Chemical elements, Near infrared, Galaxy groups and clusters

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Proceedings Article | 7 February 2003 Paper

Paper

Software and algorithms of Subaru AO

Wolfgang Gaessler, Hideki Takami, Naruhisa Takato, Yutaka Hayano, Yukiko Kamata, David Saint-Jacques, Yosuke Minowa, Masanori Iye

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.457144

KEYWORDS: Adaptive optics, Control systems, Avalanche photodetectors, Mirrors, Sensors, Telescopes, Human-machine interfaces, Computing systems, Sun, Real-time computing

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Proceedings Article | 7 February 2003 Paper

Paper

Upgrade plans for the Subaru AO system

Yutaka Hayano, Hideki Takami, Wolfgang Gaessler, Naruhisa Takato, Miwa Goto, Yukiko Kamata, Yosuke Minowa, Naoto Kobayashi, Masanori Iye

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459679

KEYWORDS: Adaptive optics, Telescopes, Control systems, Stars, Laser systems engineering, Mirrors, K band, Electrodes, Control systems design, Dye lasers

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Proceedings Article | 7 February 2003 Paper

Paper

Spectroscopy with adaptive optics: spectral slope variations

Miwa Goto, Yutaka Hayano, Naoto Kobayashi, Hiroshi Terada, Tae-Soo Pyo, Alan Tokunaga, Hideki Takami, Naruhisa Takato, Yosuke Minowa, Wolfgang Gaessler, Masanori Iye

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459251

KEYWORDS: Adaptive optics, Spectroscopy, Stars, Point spread functions, Calibration, Wavefronts, Telescopes, Binary data, Absorption, Spectrographs

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Proceedings Article | 7 February 2003 Paper

Paper

Performance of Subaru adaptive optics system and the scientific results

Hideki Takami, Naruhisa Takato, Yutaka Hayano, Masanori Iye, Yukiko Kamata, Yosuke Minowa, Tomio Kanzawa, Wolfgang Gaessler

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459239

KEYWORDS: Adaptive optics, Stars, K band, Wavefront sensors, Imaging systems, Mirrors, Telescopes, Deformable mirrors, Spectroscopy, Sensors

Read Abstract +

Proceedings Article | 30 January 2003 Paper

Paper

Development of a volume phase holographic (VPH) grism for visible to near-infrared instruments of the 8.2-m Subaru telescope

Noboru Ebizuka, Keiko Oka, Akiko Yamada, Mami Watanabe, Kayo Shimizu, Kashiko Kodate, Masami Kawabata, Takashi Teranishi, Koji Kawabata, Masanori Iye

Proceedings Volume 4842, (2003) https://doi.org/10.1117/12.458041

KEYWORDS: Diffraction gratings, Prisms, Diffraction, Astronomy, Spectroscopy, Holography, Telescopes, Refractive index, Volume holography, Modulation

Read Abstract +

Proceedings Article | 4 February 2002 Paper

Paper

First results from the Subaru AO system

Wolfgang Gaessler, Hideki Takami, Naruhisa Takato, Yutaka Hayano, Yukiko Kamata, David Saint-Jacques, Yosuke Minowa, Masanori Iye

Proceedings Volume 4494, (2002) https://doi.org/10.1117/12.454806

KEYWORDS: Adaptive optics, Mirrors, Stars, Telescopes, Deformable mirrors, Imaging systems, Sensors, Infrared radiation, K band, Avalanche photodetectors

Read Abstract +

Proceedings Article | 16 August 2000 Paper

Paper

Fiber multi-object spectrograph (FMOS) for the Subaru Telescope

Toshinori Maihara, Kouji Ohta, Naoyuki Tamura, Hiroshi Ohtani, Masayuki Akiyama, Junichi Noumaru, Norio Kaifu, Hiroshi Karoji, Masanori Iye, Gavin Dalton, Ian Parry, David Robertson, Ray Sharples, Deqing Ren, Jeremy Allington-Smith, Keith Taylor, Peter Gillingham

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395429

KEYWORDS: Spectrographs, Optical spheres, Telescopes, Near infrared, Mirrors, Astronomical imaging, Spectroscopy, Stars, Optical components, Galactic astronomy

Read Abstract +

Proceedings Article | 16 August 2000 Paper

Paper

Overview of Subaru instrumentation

Masanori Iye, Takuya Yamashita

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395484

KEYWORDS: Telescopes, Spectrographs, Adaptive optics, Cameras, Infrared radiation, Charge-coupled devices, Infrared cameras, Infrared imaging, Spectral resolution, Imaging spectroscopy

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Proceedings Article | 16 August 2000 Paper

Paper

FOCAS: faint object camera and spectrograph for the Subaru Telescope

Nobunari Kashikawa, Motoko Inata, Masanori Iye, Koji Kawabata, Kiichi Okita, George Kosugi, Youichi Ohyama, Toshiyuki Sasaki, Kazuhiro Sekiguchi, Tadafumi Takata, Yasuhiro Shimizu, Michitori Yoshida, Kentaro Aoki, Yoshihiko Saito, Ryo Asai, Hiroko Taguchi, Noboru Ebizuka, Tomohiko Ozawa, Yasushi Yadoumaru

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395414

KEYWORDS: Charge-coupled devices, Telescopes, Imaging spectroscopy, Cameras, Optical components, Spectroscopes, Spectrographs, Distortion, Spectroscopy, Collimators

Read Abstract +

Proceedings Article | 7 July 2000 Paper

Paper

Preliminary experiments of prototype laser guide star system for the Subaru telescope

Yutaka Hayano, Hideki Takami, Naruhisa Takato, Tomio Kanzawa, Yukiko Kamata, Koji Nakashima, Masanori Iye, Shin Oya

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390339

KEYWORDS: Laser guide stars, Telescopes, Laser systems engineering, Adaptive optics, Stars, Sodium, Dye lasers, Prototyping, Continuous wave operation, Telecommunications

Read Abstract +

Proceedings Article | 29 June 2000 Paper

Paper

Scientific results and prospects from the 8.2-m Subaru Telescope: extragalactic astronomy

Masanori Iye

Proceedings Volume 4005, (2000) https://doi.org/10.1117/12.390161

KEYWORDS: Galactic astronomy, Telescopes, Cameras, Astronomical telescopes, Image analysis, Galaxy groups and clusters, Infrared cameras, Astronomy, Ions, Spatial resolution

Read Abstract +

Proceedings Article | 16 June 2000 Paper

Paper

Software structure and its performance on FOCAS instrument control, a MOS design, and an analyzing package

Michitoshi Yoshida, Yasuhiro Shimizu, Toshiyuki Sasaki, George Kosugi, Tadafumi Takata, Kazuhiro Sekiguchi, Nobunari Kashikawa, Kentaro Aoki, Ryo Asai, Youichi Ohyama, Koji Kawabata, Motoko Inata, Yoshihiko Saito, Hiroko Taguchi, Noboru Ebizuka, Yasushi Yadoumaru, Tomohiko Ozawa, Masanori Iye

Proceedings Volume 4009, (2000) https://doi.org/10.1117/12.388394

KEYWORDS: Control systems, Molybdenum, Process control, Charge-coupled devices, Telescopes, Java, Human-machine interfaces, Astronomy, Fourier transforms, Observatories

Read Abstract +

Proceedings Article | 11 September 1998 Paper

Paper

Adaptive optics system for Cassegrain focus of Subaru 8.2-m telescope

Hideki Takami, Naruhisa Takato, Masashi Otsubo, Tomio Kanzawa, Yukiko Kamata, Koji Nakashima, Masanori Iye

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321685

KEYWORDS: Adaptive optics, Telescopes, Stars, Wavefront sensors, Control systems, Deformable mirrors, K band, Sensors, Computing systems, Prototyping

Read Abstract +

Proceedings Article | 9 July 1998 Paper

Paper

Fiber pupil-slicer: a versatile light feed for spectrographs

Masanori Iye, Noboru Ebizuka, Hideki Takami

Proceedings Volume 3355, (1998) https://doi.org/10.1117/12.316770

KEYWORDS: Spectrographs, Telescopes, Spectral resolution, Astronomical imaging, Microlens array, Optical fibers, Mirrors, Collimators, Spectroscopy, Microlens

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Proceedings Article | 9 July 1998 Paper

Paper

Overview of Subaru instrumentation

Masanori Iye

Proceedings Volume 3355, (1998) https://doi.org/10.1117/12.316753

KEYWORDS: Telescopes, Spectrographs, Cameras, Infrared telescopes, Adaptive optics, Imaging spectroscopy, Infrared cameras, Infrared radiation, Charge-coupled devices, Mid-IR

Read Abstract +

Proceedings Article | 9 July 1998 Paper

Paper

Development of high-dispersion grisms and immersion gratings for spectrographs of the Subaru Telescope

Noboru Ebizuka, Masanori Iye, Toshiyuki Sasaki, Moriaki Wakaki

Proceedings Volume 3355, (1998) https://doi.org/10.1117/12.316818

KEYWORDS: Spectrographs, Crystals, Zinc, Refractive index, Crystal optics, Prisms, Astronomy, Geometrical optics, Spectral resolution, Excimer lasers

Read Abstract +

Proceedings Article | 18 September 1997 Paper

Paper

Control system of the FOCAS instrument for the Subaru Telescope

Toshiyuki Sasaki, Michitoshi Yoshida, Yasuhiro Shimizu, George Kosugi, Nobunari Kashikawa, Yasushi Yadoumaru, Tadafumi Takata, Masanori Iye

Proceedings Volume 3112, (1997) https://doi.org/10.1117/12.278827

KEYWORDS: Control systems, Process control, Telescopes, Data acquisition, Imaging spectroscopy, Galactic astronomy, Human-machine interfaces, Image processing, CCD cameras, Calibration

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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

Subaru Adaptive Optics Program

Hideki Takami, Masanori Iye, Naruhisa Takato, Tomio Kanzawa, Masashi Otsubo, Koji Nakashima

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.268978

KEYWORDS: Adaptive optics, Stars, Deformable mirrors, Sensors, Mirrors, Wavefront sensors, Telescopes, Prototyping, Computing systems, Control systems

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Proceedings Article | 21 March 1997 Paper

Paper

Coronagraphic spectrometer

Masanori Iye, Motohide Tamura, Noboru Ebizuka, Yoichi Itoh, Koji Murakawa

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269029

KEYWORDS: Spectroscopy, Coronagraphy, Galactic astronomy, Adaptive optics, Light scattering, Telescopes, Imaging systems, Infrared telescopes, Image resolution, Stars

Read Abstract +

Proceedings Article | 1 June 1994 Paper

Paper

Faint Object Camera and Spectrograph for the 8-m SUBARU Telescope

Toshiyuki Sasaki, Masanori Iye, T. Yamashita, Takanori Shibata

Proceedings Volume 2198, (1994) https://doi.org/10.1117/12.176710

KEYWORDS: Telescopes, Galactic astronomy, Cameras, Charge-coupled devices, Spectrographs, Adaptive optics, Fabry–Perot interferometers, Optical instrument design, Imaging spectroscopy, Optical components

Read Abstract +

Proceedings Article | 1 June 1994 Paper

Paper

Primary mirror blank fabrication of SUBARU Telescope

Aki Sasaki, Izumi Mikami, Noriko Shimoyama, Ken-Ichi Nishiguchi, William Powell, Mary Edwards, Hiroyasu Ando, Masanori Iye

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176185

KEYWORDS: Mirrors, Error analysis, Finite element methods, Thermal effects, Telescopes, Glasses, Algorithms, Optimization (mathematics), Analytical research, Large telescopes

Read Abstract +

Proceedings Article | 1 June 1994 Paper

Paper

Instrumentation plans proposed for the Japan National Large Telescope (JNLT)

Masanori Iye

Proceedings Volume 2198, (1994) https://doi.org/10.1117/12.176726

KEYWORDS: Adaptive optics, Spectrographs, Infrared radiation, Imaging spectroscopy, Cameras, Telescopes, Infrared imaging, Prototyping, Charge-coupled devices, Image resolution

Read Abstract +

Proceedings Article | 1 June 1994 Paper

Paper

Primary mirror support system for the SUBARU Telescope

Masanori Iye, Keiichi Kodaira

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176247

KEYWORDS: Mirrors, Actuators, Telescopes, Control systems, Imaging systems, Sensors, Wavefront sensors, Electroluminescence, Large telescopes, Numerical simulations

Read Abstract +

Proceedings Article | 31 May 1994 Paper

Paper

Membrane deformable mirror for SUBARU adaptive optics

Hideki Takami, Masanori Iye

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176110

KEYWORDS: Adaptive optics, Deformable mirrors, Electrodes, Mirrors, Prototyping, Wavefronts, Astronomy, Telescopes, Surface finishing, Aluminum

Read Abstract +

Proceedings Article | 1 July 1990 Paper

Paper

Performance of Japan TI CCD housed in a microminiature refrigerator

Naruhisa Takato, Tsutomu Aoki, Shinichi Ichikawa, Masanori Iye

Proceedings Volume 1235, (1990) https://doi.org/10.1117/12.19089

KEYWORDS: Charge-coupled devices, CCD cameras, Astronomy, Imaging systems, Telescopes, Observatories, Electrons, Information operations, Control systems, Cryogenics

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Proceedings Article | 1 July 1990 Paper

Paper

Active optics experiments with a 62-cm thin mirror

Masanori Iye, Takeshi Noguchi, Yasuo Torii, Yoshitaka Mikami, Yasumasa Yamashita, Wataru Tanaka, Masaki Tabata, Noboru Itoh

Proceedings Volume 1236, (1990) https://doi.org/10.1117/12.19261

KEYWORDS: Mirrors, Actuators, Monochromatic aberrations, Active optics, Control systems, Telescopes, Optical telescopes, Computing systems, Wavefronts, Electroluminescence

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Showing 5 of 79 publications

Proceedings Volume Editor (4)

SPIE Conference Volume | 23 June 2006

Ground-based and Airborne Instrumentation for Astronomy

SPIE Conference Volume | 30 September 2004

Ground-based Instrumentation for Astronomy

SPIE Conference Volume | 7 March 2003

Instrument Design and Performance for Optical/Infrared Ground-based Telescopes

SPIE Conference Volume | 16 August 2000

Optical and IR Telescope Instrumentation and Detectors

Conference Committee Involvement (10)

SPIE Astronomical Telescopes + Instrumentation

26 June 2016 | Edinburgh, United Kingdom

SPIE Astronomical Telescopes + Instrumentation

22 June 2014 | Montréal, Canada

SPIE Astronomical Telescopes + Instrumentation

27 June 2010 | San Diego, United States

Ground-based and Airborne Telescopes

23 June 2008 | Marseille, France

SPIE Astronomical Telescopes + Instrumentation

23 June 2008 | Marseille, France

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