Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented)

Nozomi Okada; Takeru Matsumoto; Hiroshi Kondo; Tatsuyuki Takashima; Sho Masui; Shota Ueda; Atsushi Nishimura; Takeshi Manabe; Toshikazu Onishi; Hideo Ogawa; Ryoko Amari; Toshihisa Tsutsumi; Takahiro Aoki; Satoko Sawada-Satoh; Kotaro Niinuma; Kenta Fujisawa; Kimihiro Kimura; Tetsuhiro Minamidani; Chieko Miyazawa; Hiroyuki Kaneko; Kazufumi Torii; Shigeru Takahashi; Yusuke Miyamoto; Kazuhiko Miyazawa; Tomoaki Oyama; Seiji Kameno; Hiroshi Imai

doi:10.1117/12.2562137

13 December 2020 Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented)

Nozomi Okada, Takeru Matsumoto, Hiroshi Kondo, Tatsuyuki Takashima, Sho Masui, Shota Ueda, Atsushi Nishimura, Takeshi Manabe, Toshikazu Onishi, Hideo Ogawa, Ryoko Amari, Toshihisa Tsutsumi, Takahiro Aoki, Satoko Sawada-Satoh, Kotaro Niinuma, Kenta Fujisawa, Kimihiro Kimura, Tetsuhiro Minamidani, Chieko Miyazawa, Hiroyuki Kaneko, Kazufumi Torii, Shigeru Takahashi, Yusuke Miyamoto, Kazuhiko Miyazawa, Tomoaki Oyama, Seiji Kameno, Hiroshi Imai

Author Affiliations +

Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X; 1145349 (2020) https://doi.org/10.1117/12.2562137
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

We are promoting the Hybrid Installation Project in Nobeyama, Triple-band Oriented (HINOTORI), a project aiming at triple-band simultaneous single-dish and VLBI observation in the 22-, 43- and 86-GHz bands using the Nobeyama 45-m Telescope. The triple-band simultaneous observation becomes possible by developing two perforated plates and mounting them in the Nobeyama 45-m Telescope optics. One is a 22/43-GHz-band perforated plate, which transmits the higher frequency (43-GHz) band and reflects the lower frequency (22-GHz) band, and the other is a 43/86-GHz-band perforated plate, which transmits the 86-GHz band and reflects the 43-GHz band or lower. Both plates are designed to be installed in the large telescope optics with a beam diameter as large as 50 cm and insertion/reflection losses are both 0.22 dB (5%) or less in the design. The receivers used in triple-band simultaneous observation system are the H22 and H40 receivers, which are already installed in the Nobeyama 45-m Telescope, and the TZ receiver, which is a 100-GHz-band receiver including the 86-GHz band and reinstalled in the Nobeyama 45-m Telescope. A system of simultaneous observations in the 22- and 43-GHz bands of the Nobeyama 45-m Telescope with the 22/43- GHz-band perforated plate has been completed and commissioned for scientific observations. Also VLBI fringes between the Nobeyama 45-m telescope with the dual-band observation system and the VERA 20-m telescopes at 22 and 43 GHz was detected successfully.

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Nozomi Okada, Takeru Matsumoto, Hiroshi Kondo, Tatsuyuki Takashima, Sho Masui, Shota Ueda, Atsushi Nishimura, Takeshi Manabe, Toshikazu Onishi, Hideo Ogawa, Ryoko Amari, Toshihisa Tsutsumi, Takahiro Aoki, Satoko Sawada-Satoh, Kotaro Niinuma, Kenta Fujisawa, Kimihiro Kimura, Tetsuhiro Minamidani, Chieko Miyazawa, Hiroyuki Kaneko, Kazufumi Torii, Shigeru Takahashi, Yusuke Miyamoto, Kazuhiko Miyazawa, Tomoaki Oyama, Seiji Kameno, and Hiroshi Imai "Development of the multi-band simultaneous observation system of the Nobeyama 45-m Telescope in HINOTORI (Hybrid Installation project in NObeyama, Triple-band ORIented)", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 1145349 (13 December 2020); https://doi.org/10.1117/12.2562137

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