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HINOTORI and Maser Observations

Published online by Cambridge University Press:  07 February 2024

Keisuke Nakashima Open the ORCID record for Keisuke Nakashima [Opens in a new window] ,
Ka-Yiu Shum Open the ORCID record for Ka-Yiu Shum [Opens in a new window] ,
Hiroshi Imai Open the ORCID record for Hiroshi Imai [Opens in a new window]  and
HINOTORI Collaboration
Keisuke Nakashima*
Affiliation:
Faculty of Science, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan,
Ka-Yiu Shum
Affiliation:
Faculty of Science, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan,
Hiroshi Imai
Affiliation:
Amanogawa Galaxy Astronomy Research Center, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan Center for General Education, Institute for Comprehensive Education, Kagoshima University, 1-21-30 Korimoto, Kagoshima 890-0065, Japan
*
email: k8024878@kadai.jp
Rights & Permissions [Opens in a new window]

Abstract

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HINOTORI (Hybrid Integration Project in Nobeyama, Triple-band Oriented) has constructed a higher sensitivity 22/43 GHz and a 22/43/86 GHz simultaneous observation systems in the Nobeyama 45-m telescope by introducing new frequency separation filters in the telescope’s quasi-optics. The performance of the observation systems, such as the beam squint, the aperture efficiency, the system noise temperature when inserting the filters, and the phase stability of the signal path have been evaluated. It is indicated that the established systems have sufficient performance for single-dish and VLBI observations. The single-dish observation demonstrations using the triple-band system were successfully conducted in acquiring scientific data including multiple maser lines.

Keywords

masersinstrumentation: interferometers
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 380 - 382
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

References

Imai, H., Ogawa, H., Niimura, K., et al. 2022, Proceedings of the 2022 Asian-Pacific Microwave Conference (APMC), 587Google Scholar
Okada, N., Matsumoto, T., Kondo, H., et al. 2020, Proceedings of SPIE 11453, 1145349Google Scholar
Qiu, J.-J., Zhang, Y., Nakashima, J.-i., et al. 2023, A&A, 669, A121 Google Scholar