Dr. Yoshito Niwa Profile

Dr. Yoshito Niwa

at National Astronomical Observatory of Japan

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 2 August 2014 Paper

Structure design of the telescope for Small-JASMINE program

Shin Utsunomiya, Susumu Yasuda, Taihei Yano, Yoshito Niwa, Yukiyasu Kobayashi, Shingo Kashima, Naoteru Goda, Yoshiyuki Yamada

Proceedings Volume 9143, 91430Z (2014) https://doi.org/10.1117/12.2055929

KEYWORDS: Telescopes, Space telescopes, Mirrors, Satellites, Stars, Structural design, Calibration, Optical instrument design, Aerospace engineering, Infrared radiation

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Proceedings Article | 23 July 2014 Paper

Measurement of pixel response functions of a fully depleted CCD

Yukiyasu Kobayashi, Yoshito Niwa, Taihei Yano, Naoteru Gouda, Takuji Hara, Yoshiyuki Yamada

Proceedings Volume 9154, 91541W (2014) https://doi.org/10.1117/12.2055582

KEYWORDS: Charge-coupled devices, Light sources, Monte Carlo methods, Light emitting diodes, Diffusion, Silicon, Temperature metrology, Astronomy, Satellites, Radiation effects

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Proceedings Article | 21 September 2012 Paper

Nano-JASMINE: cosmic radiation degradation of CCD performance and centroid detection

Yukiyasu Kobayashi, Yuki Shimura, Yoshito Niwa, Taihei Yano, Naoteru Gouda, Yoshiyuki Yamada

Proceedings Volume 8442, 844247 (2012) https://doi.org/10.1117/12.924870

KEYWORDS: Charge-coupled devices, Stars, Light sources, Satellites, Device simulation, Point spread functions, Computer simulations, Telescopes, Light emitting diodes, Astronomy

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Proceedings Article | 11 August 2010 Paper

Nano-JASMINE: current status and data output

Yukiyasu Kobayashi, Taihei Yano, Naoteru Gouda, Yoshito Niwa, Jyunpei Murooka, Yoshiyuki Yamada, Nobutada Sako, Shin'ichi Nakasuka

Proceedings Volume 7731, 77313Z (2010) https://doi.org/10.1117/12.856068

KEYWORDS: Satellites, Telescopes, Charge-coupled devices, Stars, Space telescopes, Astronomy, Distance measurement, Sun, Gyroscopes, Sensors

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Proceedings Article | 11 August 2010 Paper

CCD centroiding analysis for Nano-JASMINE observation data

Yoshito Niwa, Taihei Yano, Hiroshi Araki, Naoteru Gouda, Yukiyasu Kobayashi, Yoshiyuki Yamada, Seiichi Tazawa, Hideo Hanada

Proceedings Volume 7731, 773141 (2010) https://doi.org/10.1117/12.857763

KEYWORDS: Stars, Charge-coupled devices, Photons, Space telescopes, Satellites, Image analysis, Point spread functions, Distance measurement, Astronomy, Observatories

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Proceedings Article | 12 July 2008 Paper

Development of laser interferometric high-precision geometry monitor for JASMINE

Yoshito Niwa, Koji Arai, Akitoshi Ueda, Masaaki Sakagami, Naoteru Gouda, Yukiyasu Kobayashi, Yoshiyuki Yamada, Taihei Yano

Proceedings Volume 7010, 70104L (2008) https://doi.org/10.1117/12.788734

KEYWORDS: Mirrors, Interferometers, Heterodyning, Interferometry, Telescopes, Laser development, Motion measurement, Space telescopes, Signal detection, Actuators

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Proceedings Article | 15 June 2006 Paper

Laser interferometric high-precision angle monitor for JASMINE

Yoshito Niwa, Koji Arai, Masaaki Sakagami, Naoteru Gouda, Yukiyasu Kobayashi, Yoshiyuki Yamada, Taihei Yano

Proceedings Volume 6265, 626546 (2006) https://doi.org/10.1117/12.671400

KEYWORDS: Mirrors, Fabry–Perot interferometers, Sensors, Near field optics, Ferroelectric materials, Transmission electron microscopy, Interferometry, Motion measurement, Actuators, Wavefront sensors

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Proceedings Article | 15 June 2006 Paper

JASMINE: galactic structure surveyor

Naoteru Gouda, Yukiyasu Kobayashi, Yoshiyuki Yamada, Taihei Yano, Takuji Tsujimoto, Masahiro Suganuma, Yoshito Niwa, Masahiro Yamauchi, Yasuhiro Kawakatsu, Hideo Matsuhara, Atsushi Noda, Atsuo Tsuiki, Masayoshi Utashima, Akira Ogawa

Proceedings Volume 6265, 626542 (2006) https://doi.org/10.1117/12.670911

KEYWORDS: Stars, Galactic astronomy, Space operations, Infrared radiation, Space telescopes, Satellites, Motion measurement, Charge-coupled devices, Telescopes, Distance measurement

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Proceedings Article | 3 April 2000 Paper

Nd:YAG oscillator-amplifier with a photorefractive phase conjugator

Kazuyoku Tei, Yoshito Niwa, Masaaki Kato, Fumiaki Matsuoka, Yoichiro Maruyama, Takashi Arisawa

Proceedings Volume 3889, (2000) https://doi.org/10.1117/12.380941

KEYWORDS: Nd:YAG lasers, Mirrors, Phase conjugation, Amplifiers, Oscillators, Crystals, Telescopes, Diffraction, Laser crystals, Ferroelectric materials

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SPIE Journal Paper | 1 January 2000

High-repetition-rate 2-J Nd:YAG oscillator-amplifier system

Kazuyoku Tei, Masaaki Kato, Fumiaki Matsuoka, Yoshito Niwa, Yoichiro Maruyama, Tohru Matoba, Takashi Arisawa

OE, Vol. 39, Issue 01, (January 2000) https://doi.org/10.1117/12.10.1117/1.602329

KEYWORDS: Nd:YAG lasers, Crystals, Optical amplifiers, Oscillators, Telescopes, Laser development, Laser crystals, Laser systems engineering, Laser stabilization, Second-harmonic generation

Proceedings Article | 27 May 1998 Paper

LD-pumped 0.62-J 105-W Nd:YAG green laser

Kazuyoku Tei, Masaaki Kato, Yoshito Niwa, Sayaka Harayama, Yoichiro Maruyama, Tohru Matoba, Takashi Arisawa

Proceedings Volume 3265, (1998) https://doi.org/10.1117/12.308674

KEYWORDS: Nd:YAG lasers, Crystals, Optical amplifiers, Amplifiers, Oscillators, Semiconductor lasers, Second-harmonic generation, Pulsed laser operation, Laser development, Relays

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Showing 5 of 11 publications

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