Dr. Shuhei Koyama Profile

Dr. Shuhei Koyama

at Univ of Tokyo

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Author

Publications (6)

Proceedings Article | 11 September 2024 Poster + Paper

The University of Tokyo Atacama Observatory 6.5-m telescope: screen camera system for the telescope mirror alignment

Kazuya Matsubayashi, Emon Kodama, Takeo Minezaki, Hidenori Takahashi, Takashi Horiuchi, Shigeyuki Sako, Takashi Miyata, Yuzuru Yoshii, Mamoru Doi, Kotaro Kohno, Kentaro Motohara, Fumi Egusa, Itsuki Sakon, Masahiro Konishi, Takafumi Kamizuka, Hiroaki Sameshima, Mitsuyoshi Yamagishi, Masataka Imai, Shuhei Koyama, Yuki Hirao, Kosuke Kushibiki, Natsuko Kato, Mizuki Numata

Proceedings Volume 13094, 130944E (2024) https://doi.org/10.1117/12.3016581

KEYWORDS: Telescopes, Cameras, Mirrors, Spatial resolution, CMOS sensors, Observatories, Monochromatic aberrations, Imaging systems

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Proceedings Article | 11 September 2024 Presentation + Paper

The University of Tokyo Atacama Observatory 6.5m telescope: project status 2024

Takashi Miyata, Yuzuru Yoshii, Mamoru Doi, Kotaro Kohno, Takeo Minezaki, Kentaro Motohara, Shigeyuki Sako, Fumi Egusa, Itsuki Sakon, Masahiro Konishi, Hidenori Takahashi, Takafumi Kamizuka, Kazuya Matsubayashi, Hiroaki Sameshima, Mitsuyoshi Yamagishi, Masataka Imai, Shuhei Koyama, Takashi Horiuchi, Yuki Hirao, Kosuke Kushibiki, Natsuko Kato, Mizuki Numata, Leonardo Bronfman, Maria Ruiz, Rene Mendez, Guido Garay, Andrés Escala, Patricio Rojo

Proceedings Volume 13094, 130940S (2024) https://doi.org/10.1117/12.3018570

KEYWORDS: Telescopes, Mirrors, Equipment, Roads, Observatories, Astronomy, Imaging systems, Astronomical telescopes, Spectrographs, Windows

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SPIE Journal Paper | 4 March 2024 Open Access

Development of a near-infrared wide-field integral field unit by ultra-precision diamond cutting

Kosuke Kushibiki, Shinobu Ozaki, Masahiro Takeda, Takuya Hosobata, Yutaka Yamagata, Shin-ya Morita, Toshihiro Tsuzuki, Keiichi Nakagawa, Takao Saiki, Yutaka Ohtake, Kenji Mitsui, Hirofumi Okita, Yutaro Kitagawa, Yukihiro Kono, Kentaro Motohara, Hidenori Takahashi, Masahiro Konishi, Natsuko Kato, Shuhei Koyama, Nuo Chen

JATIS, Vol. 10, Issue 01, 015004, (March 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.015004

KEYWORDS: Mirrors, Telescopes, Image quality, Mirror surfaces, Vignetting, Surface roughness, Engineering, Stars, Optical components, Off axis mirrors

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Proceedings Article | 29 August 2022 Poster + Paper

Development status of a near-infrared integral field unit SWIMS-IFU

Kosuke Kushibiki, Shinobu Ozaki, Masahiro Takeda, Takuya Hosobata, Yutaka Yamagata, Shinya Morita, Keiichi Nakagawa, Takao Saiki, Yutaka Ohtake, Toshihiro Tsuzuki, Kenji Mitsui, Hirofumi Okita, Kentaro Motohara, Hidenori Takahashi, Masahiro Konishi, Natsuko M. Kato, Shuhei Koyama, Nuo Chen, Shogo Homan, Akino Yasuda

Proceedings Volume 12188, 121882V (2022) https://doi.org/10.1117/12.2627205

KEYWORDS: Mirrors, Image quality, Vignetting, Optical fabrication, Stray light, Fabrication, Tolerancing, Surface roughness

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Proceedings Article | 29 August 2022 Presentation + Paper

The University of Tokyo Atacama Observatory 6.5m telescope: project status 2022

Takashi Miyata, Yuzuru Yoshii, Mamoru Doi, Kotaro Kohno, Masuo Tanaka, Kentaro Motohara, Takeo Minezaki, Shigeyuki Sako, Tomoki Morokuma, Toshihiko Tanabe, Bunyo Hatsukade, Masahiro Konishi, Hidenori Takahashi, Takafumi Kamizuka, Fumi Egusa, Hiroaki Sameshima, Kentaro Asano, Atsushi Nishimura, Shuhei Koyama, Natsuko Kato, Mizuki Numata, Tsutomu Aoki, Leonardo Bronfman, Maria Ruiz, Mario Hamuy, Rene Mendez, Guido Garay, Andrés Escala

Proceedings Volume 12182, 1218211 (2022) https://doi.org/10.1117/12.2628146

KEYWORDS: Telescopes, Mirrors, Observatories, Astronomy, Coating, Astronomical telescopes, Mid-IR, Spectrographs, Optical fabrication, Actuators

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Proceedings Article | 29 August 2022 Poster + Paper

Development status of TAO/MIMIZUKU: performance test of the near-infrared channel

Takafumi Kamizuka, Takashi Miyata, Shigeyuki Sako, Ryou Ohsawa, Kentaro Asano, Atsushi Nishimura, Kengo Tachibana, Tsubasa Michifuji, Hirokazu Iida, Akira Naruse, Mizuho Uchiyama, Itsuki Sakon, Takashi Onaka, Hirokazu Kataza, Sunao Hasegawa, Fumihiko Usui, Naruhisa Takato, Noboru Ebizuka, Takuya Hosobata, Tsutomu Aoki, Mamoru Doi, Fumi Egusa, Bunyo Hatsukade, Natsuko Kato, Kotaro Kohno, Masahiro Konishi, Shintaro Koshida, Shuhei Koyama, Takeo Minezaki, Tomoki Morokuma, Kentaro Motohara, Mizuki Numata, Hiroaki Sameshima, Hidenori Takahashi, Yoichi Tamura, Toshihiko Tanabe, Masuo Tanaka, Kosuke Kushibiki, Nuo Chen, Shogo Homan, Yuzuru Yoshii

Proceedings Volume 12184, 121845J (2022) https://doi.org/10.1117/12.2628600

KEYWORDS: Near infrared, Imaging systems, Spectroscopy, Sensors, Mid-IR

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Showing 5 of 6 publications

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