Dr. Hiroshi Akitaya Profile

Dr. Hiroshi Akitaya

Senior Staff Scientist at Chiba Institute of Technology

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 23 August 2024 Presentation + Paper

Development of an optical and near-infrared telescope onboard the HiZ-GUNDAM mission

Kohji Tsumura, Hideo Matsuhara, Koji Kawabata, Hiroshi Akitaya, Shuji Matsuura, Haruki Fukui, Akihiro Miyasaka, Keisuke Shinozaki, Akihiro Doi, Daisuke Yonetoku

Proceedings Volume 13092, 130922B (2024) https://doi.org/10.1117/12.3013597

KEYWORDS: Prisms, Telescopes, Satellites, Optical design, Thermal modeling

Read Abstract +

Proceedings Article | 23 August 2024 Poster + Paper

Design and fabrication of the double Kösters prism for NIR telescope of HiZ-GUNDAM satellite

Koji Kawabata, Kohji Tsumura, Daisuke Yonetoku, Hideo Matsuhara, Shuji Matsuura, Akihiro Doi, Hiroshi Akitaya, Tomoya Hori

Proceedings Volume 13092, 130926Z (2024) https://doi.org/10.1117/12.3016203

KEYWORDS: Prisms, Adhesives, Telescopes, Near infrared, Design, Silica, Satellites, Fabrication, X-ray telescopes

Read Abstract +

Proceedings Article | 21 August 2024 Presentation + Paper

High-z gamma-ray bursts unraveling the dark ages and extreme space-time mission: HiZ-GUNDAM

Daisuke Yonetoku, Akihiro Doi, Tatehiro Mihara, Hideo Matsuhara, Takanori Sakamoto, Kohji Tsumura, Kunihito Ioka, Makoto Arimoto, Teruaki Enoto, Kenjiro Fujimoto, Hatsune Goto, Shuichi Gunji, Junko Hiraga, Shintaro Ikunaga, Nobuyuki Kawai, Ryuji Kondo, Shunsuke Kurosawa, Junyi Li, Yoshitomo Maeda, Ikuyuki Mitsuishi, Toshio Murakami, Issin Nagataka, Yujin Nakagawa, Naoki Ogino, Taiki Owari, Ryuji Sato, Masataka Sato, Tomoya Sato, Tatsuya Sawano, Motoko Serino, Hsien-Chieh Shen, Satoshi Sugita, Shuta Takahashi, Toru Tamagawa, Keisuke Tamura, Takaaki Tanaka, Toru Tanimori, Makoto Tashiro, Takumi Togashi, Hiroshi Tomida, Keito Watanabe, Kazutaka Yamaoka, Makoto Yamauchi, Yoichi Yatsu, Atsumasa Yoshida, Hiroshi Akitaya, Akihiko Fukui, Haruki Fukui, Yoshifusa Ita, Koji Kawabata, Shuji Matsuura, Akihiro Miyasaka, Kentaro Motohara, Norio Narita, Hirofumi Noda, Hirofumi Okita, Kei Sano, Keisuke Shinozaki, Sou Tajima, Yuji Urata, Takehiko Wada, Kenshi Yanagisawa, Michitoshi Yoshida, Nobutaka Bando, Ichiro Jikuya, Kenji Minesugi, Yasuyuki Miyazaki, Yusuke Kono, Naoki Takase, Shunichi Nakatsubo, Tooru Kaga, Katsuaki Asano, Kohei Inayoshi, Susumu Inoue, Hirotaka Ito, Hideyuki Izumiura, Norita Kawanaka, Tomoya Kinugawa, Shota Kisaka, Kenta Kiuchi, Koutarou Kyutoku, Jin Matsumoto, Akira Mizuta, Kohta Murase, Hiroki Nagakura, Shigehiro Nagataki, Yoshikazu Nakada, Takashi Nakamura, Yuu Niino, Yudai Suwa, Keitaro Takahashi, Takahiro Tanaka, Kenji Toma, Tomonori Totani, Ryo Yamazaki, Jun'ichi Yokoyama, Yuichi Harikane, Masaomi Tanaka, Shigeo Kimura, Mariko Kimura

Proceedings Volume 13093, 1309320 (2024) https://doi.org/10.1117/12.3018571

KEYWORDS: X-rays, Telescopes, Sensors, X-ray telescopes, Satellites, Physics, Near infrared, X-ray astronomy, X-ray imaging

Read Abstract +

Proceedings Article | 21 August 2024 Poster + Paper

Development of the software algorithm for detection of gamma-ray bursts for HiZ-GUNDAM mission

Takumi Togashi, Shuichi Gunji, Ryuji Sato, Keito Watanabe, Haruaki Niinuma, Daisuke Yonetoku, Hiroshi Akitaya, Akihiro Doi, Hatsune Goto, Yousuke Kono, Hideo Matsuhara, Tatehiro Mihara, Takanori Sakamoto, Tatsuya Sawano

Proceedings Volume 13093, 130936B (2024) https://doi.org/10.1117/12.3018566

KEYWORDS: Photons, Histograms, Algorithm development, X-rays, Image sensors, Gamma radiation, Satellites, X-ray telescopes, Spatial resolution, Detection and tracking algorithms

Read Abstract +

Proceedings Article | 18 July 2024 Poster + Paper

A high throughput imager at near-ultraviolet wavelengths for a ground-based telescope

Hiroshi Akitaya, Tomoki Morokuma, Koji Kawabata

Proceedings Volume 13096, 130963G (2024) https://doi.org/10.1117/12.3013630

KEYWORDS: Imaging systems, Telescopes, Sensors, Optical filters, Atmospheric modeling, Transmittance, Quantum detection, Equipment

Read Abstract +

Proceedings Article | 12 March 2021 Paper

AA Tau polarimetric observation using Kanata HONIR instrument

Wei Liu, Koji Kawabata, Hiroshi Akitaya

Proceedings Volume 11763, 117630K (2021) https://doi.org/10.1117/12.2585776

Read Abstract +

Proceedings Article | 13 December 2020 Presentation + Paper

Development of an optical and near-infrared telescope onboard the HiZ-GUNDAM mission

Kohji Tsumura, Daisuke Yonetoku, Koji Kawabata, Shuji Matsuura, Hirofumi Noda, Yuji Urata, Yuu Niino, Kei Sano, Akisato Ohashi, Akihiro Doi, Hiroshi Akitaya, Akihiro Miyasaka, Miku Kurimata, Yoshikatsu Kawata, Makoto Arimoto, Hirofumi Okita

Proceedings Volume 11443, 114430R (2020) https://doi.org/10.1117/12.2560654

KEYWORDS: Telescopes, Infrared telescopes, Optical instrument design, X-ray telescopes, Astronomy, Gamma radiation, X-rays, Satellites, Infrared detectors, Mirrors

Read Abstract +

Proceedings Article | 13 December 2020 Presentation + Paper

Development of an optical photon counting imager using a monolithic Geiger APD array

Takeshi Nakamori, Yuga Ouchi, Risa Ogihara, Toshio Terasawa, Yuhei Kato, Shinpei Shibata, Hiroshi Akitaya, Koji Kawabata

Proceedings Volume 11454, 1145418 (2020) https://doi.org/10.1117/12.2560925

KEYWORDS: Photon counting, Imaging systems, Avalanche photodetectors, Prototyping, Astronomical imaging, Astronomy, Image resolution, Avalanche photodiodes, Sensor performance, Sensors

Read Abstract +

Proceedings Article | 13 December 2020 Poster + Paper

(KFISP) Kottamia Faint Imaging Spectro-Polarimeter: opto-mechanical design and performance analysis

Yosry Azzam, Gamal Ali, F. I. Elnagahy, I. Zead, Nasser Ahmed, Hamed Ismail, Somaya Saad, A. Shokry, Ali Takey, Y. H. Hendy, Peter Mack, Michitoshi Yoshida, Koji Kawabata, Hiroshi Akitaya, M. Darwish, Ahmed Fouad, Islam Helmy, Nohamed Ismail, Doaa Elsayed, Ola Ali, Mohamed Abdel-sabour, Mona Molham, A. Haroon, A. M. I. Osman, M. Hamdy, I. Issa, M. Abo-Elala, A. Essam

Proceedings Volume 11447, 114479U (2020) https://doi.org/10.1117/12.2561664

KEYWORDS: Optomechanical design, Polarimetry, Cameras, Calibration, Telescopes, Collimators, Optical instrument design, Astronomical telescopes, Astronomy, Observatories

Read Abstract +

Proceedings Article | 13 December 2020 Presentation + Paper

High-redshift gamma-ray burst for unraveling the Dark Ages Mission: HiZ-GUNDAM

Daisuke Yonetoku, Tatehiro Mihara, Akihiro Doi, Takanori Sakamoto, Kohji Tsumura, Kunihito Ioka, Yusuke Amaya, Makoto Arimoto, Teruaki Enoto, Takeru Fujii, Hatsune Goto, Shuichi Gunji, Junko Hiraga, Hirokazu Ikeda, Nobuyuki Kawai, Shunsuke Kurosawa, Jin Li, Yoshitomo Maeda, Ikuyuki Mitsuishi, Toshio Murakami, Yujin Nakagawa, Naoki Ogino, Masanori Ohno, Tatsuya Sawano, Kensyo Sei, Motoko Serino, Satoshi Sugita, Toru Tamagawa, Keisuke Tamura, Takaaki Tanaka, Toru Tanimori, Makoto Tashiro, Hiroshi Tomida, Hyeongsoon Wang, Tomohiro Yamaguchi, Ayumi Yamamoto, Kazutaka Yamaoka, Makoto Yamauchi, Yoichi Yatsu, Atsumasa Yoshida, Daito Yuhi, Hiroshi Akitaya, Akihiko Fukui, Yoshifusa Ita, Hidehiro Kaneda, Koji Kawabata, Yoshikatsu Kawata, Miku Kurimata, Toshio Matsumoto, Shuji Matsuura, Akihiro Miyasaka, Kentaro Motohara, Norio Narita, Hirofumi Noda, Akisato Ohashi, Hirofumi Okita, Kei Sano, Masaomi Tanaka, Yuji Urata, Takehiko Wada, Hikaru Yamaguchi, Kenshi Yanagisawa, Michitoshi Yoshida, Katsuaki Asano, Kohei Inayoshi, Susumu Inoue, Hirotaka Ito, Hideyuki Izumiura, Norita Kawanaka, Tomoya Kinugawa, Shota Kisaka, Kenta Kiuchi, Jin Matsumoto, Akira Mizuta, Kohta Murase, Hiroki Nagakura, Shigehiro Nagataki, Yoshikazu Nakada, Takashi Nakamura, Yuu Niino, Yudai Suwa, Keitaro Takahashi, Takahiro Tanaka, Kenji Toma, Tomonori Totani, Ryo Yamazaki, Jun'ichi Yokoyama

Proceedings Volume 11444, 114442Z (2020) https://doi.org/10.1117/12.2560603

KEYWORDS: Gamma radiation, Astronomy, X-ray optics, Satellite communications, Satellites, Observatories, X-ray detectors, X-ray telescopes, X-ray imaging, X-rays

Read Abstract +

Proceedings Article | 13 December 2020 Poster + Paper

Multi-wavelength SimultaneouS High throughput Imager and polarimeter (MuSaSHI): development and its performance

Yumiko Oasa, Kazutoshi Ushioda, Yoshiki Shibata, Genta Seino, Masaru Kino, Hiroshi Akitaya

Proceedings Volume 11447, 114475Z (2020) https://doi.org/10.1117/12.2560903

KEYWORDS: Polarimetry, Imaging systems, Telescopes, Charge-coupled devices, Photometry, Planets, Stars

Read Abstract +

Proceedings Article | 6 August 2014 Paper

HONIR: an optical and near-infrared simultaneous imager, spectrograph, and polarimeter for the 1.5-m Kanata telescope

Hiroshi Akitaya, Yuki Moritani, Takahiro Ui, Takeshi Urano, Yuma Ohashi, Koji Kawabata, Asami Nakashima, Mahito Sasada, Kiyoshi Sakimoto, Tatsuya Harao, Hisashi Miyamoto, Rieko Matsui, Ryosuke Itoh, Katsutoshi Takaki, Issei Ueno, Takashi Ohsugi, Hidehiko Nakaya, Takuya Yamashita, Michitoshi Yoshida

Proceedings Volume 9147, 91474O (2014) https://doi.org/10.1117/12.2054577

KEYWORDS: Polarization, Polarimetry, Imaging spectroscopy, Telescopes, Sensors, Prisms, Spectroscopy, Stars, Spectroscopes, CCD image sensors

Read Abstract +

Proceedings Article | 28 July 2014 Paper

Development of a new readout system for the near-infrared detector of HONIR

Takahiro Ui, Shigeyuki Sako, Takuya Yamashita, Hiroshi Akitaya, Koji Kawabata, Hidehiko Nakaya, Yuki Moritani, Ryosuke Itoh, Katsutoshi Takaki, Takeshi Urano, Issei Ueno, Takashi Ohsugi, Michitoshi Yoshida, Hikaru Nakao, Yasuhito Hashiba

Proceedings Volume 9147, 91476C (2014) https://doi.org/10.1117/12.2055388

KEYWORDS: Sensors, Linear filtering, Multiplexers, Electrons, Mirrors, Analog electronics, Clocks, Detector development, Imaging spectroscopy, Astronomy

Read Abstract +

Proceedings Article | 24 September 2012 Paper

An optical and near-infrared multipurpose instrument HONIR

Kiyoshi Sakimoto, Hiroshi Akitaya, Takuya Yamashita, Koji Kawabata, Hidehiko Nakaya, Hisashi Miyamoto, Tatsuya Harao, Ryosuke Itoh, Risako Matsui, Yuki Moritani, Asami Nakashima, Takashi Ohsugi, Mahito Sasada, Katsutoshi Takaki, Issei Ueno, Takahiro Ui, Takeshi Urano, Michitoshi Yoshida

Proceedings Volume 8446, 844673 (2012) https://doi.org/10.1117/12.926425

KEYWORDS: Sensors, Telescopes, Polarimetry, Imaging spectroscopy, Infrared imaging, Cameras, Optical benches, Spectroscopes, Optical components, Beam splitters

Read Abstract +

Proceedings Article | 13 September 2012 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

Read Abstract +

Proceedings Article | 23 July 2010 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

Read Abstract +

Proceedings Article | 23 July 2008 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

Read Abstract +

Proceedings Article | 14 February 2003 Paper

Development of the high-resolution spectropolarimeter: LIPS

Yuji Ikeda, Hiroshi Akitaya, Kentaro Matsuda, Koji Kawabata, Munezo Seki, Ryuko Hirata, Akira Okazaki

Proceedings Volume 4843, (2003) https://doi.org/10.1117/12.458833

KEYWORDS: Laser induced plasma spectroscopy, Polarization, Polarimetry, Telescopes, Charge-coupled devices, Wave plates, Astronomy, Spectral resolution, Stars, Adhesives

Read Abstract +

Showing 5 of 18 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years