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The Jiao Tong University Spectroscopic Telescope Project

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The Jiao Tong University Spectroscopic Telescope(JUST)is a 4.4-meter f/6.0 segmented-mirror telescope dedicated to spectroscopic observations.The JUST primary mirror is composed of 18 hexagonal segments,each with a diameter of 1.1 m.JUST provides two Nasmyth platforms for placing science instruments.One Nasmyth focus fits a field of view of 10′ and the other has an extended field of view of 1.2° with correction optics.A tertiary mirror is used to switch between the two Nasmyth foci.JUST will be installed at a site at Lenghu in Qinghai Province,China,and will conduct spectroscopic observations with three types of instruments to explore the dark universe,trace the dynamic universe,and search for exoplanets:(1)a multi-fiber(2000 fibers)medium-resolution spectrometer(R=4000-5000)to spectroscopically map galaxies and large-scale structure;(2)an integral field unit(IFU)array of 500 optical fibers and/or a long-slit spectrograph dedicated to fast follow-ups of transient sources for multi-messenger astronomy;(3)a high-resolution spectrometer(R～100000)designed to identify Jupiter analogs and Earth-like planets,with the capability to characterize the atmospheres of hot exoplanets.

Astronomical instrumentationOptical telescopesLarge-scale structure of the universeRedshift surveysTime domain astronomyExoplanet astronomy

JUST Team、Chengze Liu、Ying Zu、Fabo Feng、Zhaoyu Li、Yu Yu、Hua Bai、Xiangqun Cui、Bozhong Gu、Yizhou Gu、Jiaxin Han、Yonghui Hou、Zhongwen Hu、Hangxin Ji、Yipeng Jing、Wei Li、Zhaoxiang Qi、Xianyu Tan、Cairang Tian、Dehua Yang、Xiangyan Yuan、Chao Zhai、Congcong Zhang、Jun Zhang、Haotong Zhang、Pengjie Zhang、Yong Zhang、Yi Zhao、Xianzhong Zheng、Qingfeng Zhu、Xiaohu Yang

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Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai 200240,China

Department of Astronomy,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China

Nanjing Institute of Astronomical Optics&Technology,Chinese Academy of Sciences,Nanjing 210042,China

University of Chinese Academy of Sciences,Nanjing,Nanjing 211135,China

University of Chinese Academy of Sciences,Beijing 101408,China

Lenghu Technology Innovation Industrial Park Management Committee,Lenghu 817400,China

Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China

Department of Astronomy,University of Science and Technology of China,Hefei 230026,China

National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China

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Shanghai Jiao Tong University for support building the JUST telescopeQinghai provincial government and Haixi prefecture for providing the site,dome and infrastructure中央高校基本科研业务费专项高等学校学科创新引智计划(111计划)上海市自然科学基金

B2001919ZR1466800

2024

10.61977/ati2024008

天文研究与技术－国家天文台台刊
中国科学院国家天文台云南天文台

天文研究与技术－国家天文台台刊

影响因子：0.333
ISSN：1672-7673
年,卷(期)：2024.1(1)
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