Dr. Yasumasa Yamasaki Profile

Dr. Yasumasa Yamasaki

at National Astronomical Observatory of Japan

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Author

Publications (10)

Proceedings Article | 23 August 2024 Presentation + Paper

Lunar meter-wave telescope (TSUKUYOMI) as one of Japanese lunar plans

Satoru Iguchi, Toru Yamada, Yasumasa Yamasaki, Toshikazu Onishi, Daisuke Yamauchi, Fuminori Tsuchiya, Keitaro Takahashi, Takeru Matsumoto, Naoki Isobe, Takahiro Iwata, Naoto Usami, Yutaro Sekimoto, Yasuyuki Miyazaki, Takanao Saiki, Osamu Mori, Tetsuo Yoshimitsu

Proceedings Volume 13092, 130922L (2024) https://doi.org/10.1117/12.3018410

KEYWORDS: Antennas, Calibration, Signal detection, Cosmology, Astronomy, Telescopes, Design, Exoplanets, Spectroscopy, Absorption

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Proceedings Article | 23 August 2024 Poster + Paper

A 1–50 MHz short dipole antenna for observing the 21 cm global signal on the Moon

Yasumasa Yamasaki, Takeru Matsumoto, Satoru Iguchi, Toshikazu Onishi, Toru Yamada, Daisuke Yamauchi, Fuminori Tsuchiya, Keitaro Takahashi, Naoki Isobe, Takahiro Iwata, Naoto Usami, Yutaro Sekimoto, Yasuyuki Miyazaki, Takanao Saiki, Osamu Mori, Tetsuo Yoshimitsu

Proceedings Volume 13092, 1309278 (2024) https://doi.org/10.1117/12.3018545

KEYWORDS: Antennas, Reflection, Receivers, Simulations, Dielectrics, Calibration, Absorption, Signal detection, Resistance

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Proceedings Article | 23 August 2024 Poster + Paper

Low-frequency antenna design to observe the 21 cm global signal from the Dark Ages with the lunar telescope, TSUKUYOMI

Takeru Matsumoto, Yasumasa Yamasaki, Toshikazu Onishi, Satoru Iguchi, Toru Yamada, Daisuke Yamauchi, Fuminori Tsuchiya, Keitaro Takahashi, Naoki Isobe, Takahiro Iwata, Naoto Usami, Yutaro Sekimoto, Yasuyuki Miyazaki, Takanao Saiki, Osamu Mori, Tetsuo Yoshimitsu

Proceedings Volume 13092, 1309279 (2024) https://doi.org/10.1117/12.3018734

KEYWORDS: Antennas, Calibration, Resistance, Design, Capacitance, Simulations, Signal detection, Telescopes, Temperature metrology, Capacitors

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Proceedings Article | 16 August 2024 Poster + Paper

Development of a wideband receiver for dual-band and dual-polarization observations in 230 and 345 GHz bands

Sho Masui, Sana Kawashita, Yasumasa Yamasaki, Yutaka Hasegawa, Takafumi Kojima, Takeru Matsumoto, Ikko Fujitomo, Yuma Nishikawa, Ryo Nakagawa, Hideo Ogawa, Toshikazu Onishi

Proceedings Volume 13102, 131022L (2024) https://doi.org/10.1117/12.3018561

KEYWORDS: Waveguides, Multiplexers, Phase shifts, Circular polarizers, Receivers, Polarization, Reflection, Prototyping, Telescopes, Phase measurement

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Proceedings Article | 16 August 2024 Poster + Paper

Development of 86 GHz low-noise wideband receiver

Akira Kameyama, Shoki Kondo, Shuto Dakie, Nozomi Okada, Satoko Sawada-Satoh, Hideo Ogawa, Toshikazu Onishi, Yasumasa Yamasaki, Sho Masui, Kazuyoshi Sunada, Tomoaki Oyama, Shunsaku Suzuki, Yuji Ueno, Mareki Honma, Kazuyoshi Yamashita, Kazuhiro Hada, Shoko Koyama, Mieko Takamura

Proceedings Volume 13102, 1310229 (2024) https://doi.org/10.1117/12.3019667

KEYWORDS: Receivers, Waveguides, Telescopes, Signal attenuation, Quantum receivers, Design, Tunable filters, Optical isolators, Observatories, Cryocoolers

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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

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Proceedings Article | 13 December 2020 Poster + Paper

Development of the new multi-beam receiver and telescope control system for NASCO

Atsushi Nishimura, Akio Ohama, Kimihiro Kimura, Daichi Tsutsumi, Yudai Matsue, Rin Yamada, Mariko Sakamoto, Kenta Matsunaga, Yutaka Hasegawa, Taisei Minami, Takeru Matsumoto, Kazuki Shiotani, So Okuda, Kakeru Fujishiro, Keisuke Sakasai, Masahiro Suzuki, Shun Saeki, Kouki Satani, Kousuke Urushihara, Chiharu Kato, Takashi Kondo, Kazuki Okawa, Daiki Kurita, Tetsuta Inaba, Shohei Maruyama, Masako Koga, Kenya Noda, Mikito Kohno, Hiroaki Iwamura, Yuichi Hori, Kaoru Nishikawa, Takeru Nishioka, Thoqin Pang, Hidetoshi Sano, Rei Enokiya, Satoshi Yoshiike, Shinji Fujita, Katsuhiro Hayashi, Kazufumi Torii, Takahiro Hayakawa, Akio Taniguchi, Kisetsu Tsuge, Yumiko Yamane, Yusuke Hattori, Takahiro Ohno, Shota Ueda, Sho Masui, Yasumasa Yamasaki, Hiroshi Kondo, Kazuji Suzuki, Kazuhiro Kobayashi, Yasunori Fujii, Yumi Fujii, Tetsuhiro Minamidani, Takeshi Okuda, Hiroaki Yamamoto, Kengo Tachihara, Toshikazu Onishi, Akira Mizuno, Hideo Ogawa, Yasuo Fukui

Proceedings Volume 11453, 114533Z (2020) https://doi.org/10.1117/12.2562053

KEYWORDS: Receivers, Control systems, Telescopes, Submillimeter telescopes, Mirrors, Spectrometers, Robotics, Reliability

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Proceedings Article | 13 December 2020 Poster + Paper

Development of a wideband waveguide diplexer for simultaneous observation at 210-375 GHz

Sho Masui, Taisei Minami, Masanari Okawa, Yasumasa Yamasaki, Koki Yokoyama, Shota Ueda, Yutaka Hasegawa, Atsushi Nishimura, Toshikazu Onishi, Hideo Ogawa, Takafumi Kojima, Alvaro Gonzalez

Proceedings Volume 11453, 114534F (2020) https://doi.org/10.1117/12.2561355

KEYWORDS: Waveguides, Telescopes, Receivers, Observatories, Clouds, Astronomy, Oscillators, Waveguide modes

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Proceedings Article | 13 December 2020 Poster + Paper

Optical design of the 1.85-m mm-submm telescope in 210–375 GHz band

Yasumasa Yamasaki, Sho Masui, Masanari Okawa, Koki Yokoyama, Taisei Minami, Shota Ueda, Yutaka Hasegawa, Atsushi Nishimura, Toshikazu Onishi, Hideo Ogawa, Nozomi Okada, Kimihiro Kimura, Alvaro Gonzalez, Takafumi Kojima, Keiko Kaneko, Ryo Sakai

Proceedings Volume 11453, 114534H (2020) https://doi.org/10.1117/12.2561955

KEYWORDS: Optical design, Telescopes, Receivers, Mirrors, Clouds, Reflectors, Antennas, Optical instrument design, Device simulation, Optical simulations

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Proceedings Article | 13 December 2020 Poster + Paper

Current status and future plan of Osaka Prefecture University 1.85-m mm-submm telescope project

Atsushi Nishimura, Kazuki Tokuda, Ryohei Harada, Yutaka Hasegawa, Shota Ueda, Sho Masui, Ryotaro Konishi, Yasumasa Yamasaki, Hiroshi Kondo, Koki Yokoyama, Takeru Matsumoto, Taisei Minami, Masanari Okawa, Shinji Fujita, Ayu Konishi, Yuka Nakao, Shimpei Nishimoto, Sana Kawashita, Sho Yoneyama, Tatsuyuki Takashima, Kenta Goto, Nozomi Okada, Kimihiro Kimura, Yasuhiro Abe, Kazuyuki Muraoka, Hiroyuki Maezawa, Toshikazu Onishi, Hideo Ogawa

Proceedings Volume 11445, 114457F (2020) https://doi.org/10.1117/12.2560955

KEYWORDS: Waveguides, Observatories, Galactic astronomy, Telescopes, Clouds, Spatial resolution, Molecules, Modulators, Circular polarizers, Transducers

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Showing 5 of 10 publications

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