Dr. Atsushi Nishimura Profile

Dr. Atsushi Nishimura

at National Astronomical Observatory

SPIE Involvement:

Author

Publications (16)

SPIE Journal Paper | 11 August 2023 Open Access

Development of a flat calibration unit for accurate flat fielding in the mid-infrared region

Akira C. Naruse, Takafumi Kamizuka, Takashi Miyata, Shigeyuki Sako, Ryou Ohsawa, Kentaro Asano, Atsushi Nishimura, Itsuki Sakon, Kengo Tachibana, Hirokazu Iida

JATIS, Vol. 9, Issue 03, 038004, (August 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.3.038004

KEYWORDS: Black bodies, Calibration, Mirrors, Reflection, Silicon, Photometry, Absorption, Tunable filters, Observational astronomy, Mid-IR

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 31 August 2022 Presentation + Paper

Extended Q-band (eQ) receiver for Nobeyama 45-m Telescope

Chau-Ching Chiong, Fumitaka Nakamura, Atsushi Nishimura, Ross Burns, Chen Chien, Kazuhito Dobashi, Yasunori Fujii, Chin-Ting Ho, Ted Huang, Yuh-Jing Hwang, Shou-Ting Jian, Ryohei Kawabe, Kimihiro Kimura, Sheng-Yuan Liu, Shih-Ping Lai, Hideo Ogawa, Nozomi Okada, Seiji Kameno, Tomomi Shimoikura, Shigehisa Takakuwa, Kotomi Taniguchi, Wei-Hao Wang, You-Ting Yeh, Yasumasa Yamasaki, Yoshinori Yonekura

Proceedings Volume 12190, 121900M (2022) https://doi.org/10.1117/12.2629811

KEYWORDS: Receivers, Telescopes, Astronomy, Radio astronomy, Observatories, Polarization

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Development of a flat calibration unit for TAO/MIMIZUKU

Akira C. Naruse, Takafumi Kamizuka, Takashi Miyata, Shigeyuki Sako, Atsushi Nishimura, Itsuki Sakon, Ryou Ohsawa, Kentaro Asano, Kengo Tachibana, Tsubasa Michifuji, Hirokazu Iida

Proceedings Volume 12188, 121883U (2022) https://doi.org/10.1117/12.2629163

KEYWORDS: Black bodies, Sensors, Mid-IR, Calibration, Stars, Silicon, Mirrors, Absorption, Telescopes, Photons

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Development of a high-speed identification model for infrared-ring structures using deep learning

Shimpei Nishimoto, Shota Ueda, Shinji Fujita, Atsushi Nishimura, Toshikazu Onishi, Kazuki Tokuda, Ryuki Yoneda, Yoshito Shimajiri, Yusuke Miyamoto, Yasutomo Kawanishi, Atsushi M. Ito, Kaoru Nishikawa, Daisuke Yoshida, Hiroyuki Kaneko, Tsuyoshi Inoue, Shunya Takekawa, Shuyo Nakatani

Proceedings Volume 12189, 121891Q (2022) https://doi.org/10.1117/12.2628664

KEYWORDS: Data modeling, Infrared radiation, Thermal modeling, Machine learning, Stars, Performance modeling, Observatories, Detector development

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Active surface measurements for large aperture millimeter/submillimeter-wave telescopes using a photogrammetry technique

Atsushi Nishimura, Kengo Tachihara, Shimpei Nishimoto, Shinji Fujita, Kaoru Nishikawa, Ryuki Yoneda, Kazuyuki Handa, Tomio Kurakami, Hideo Ogawa, Toshikazu Onishi

Proceedings Volume 12182, 1218222 (2022) https://doi.org/10.1117/12.2629126

KEYWORDS: Photogrammetry, Telescopes, Reflectors, Device simulation, Reflector telescopes, Mirrors, Radio telescopes, Monte Carlo methods, Antennas

Read Abstract +

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

Read Abstract +

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

Read Abstract +