The Jiao Tong University Spectroscopic Telescope Project  

作　　者：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 

机构地区：[1]Tsung-Dao Lee Institute,Shanghai Jiao Tong University,Shanghai 200240,China [2]Department of Astronomy,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China [3]Nanjing Institute of Astronomical Optics&Technology,Chinese Academy of Sciences,Nanjing 210042,China [4]University of Chinese Academy of Sciences,Nanjing,Nanjing 211135,China [5]University of Chinese Academy of Sciences,Beijing 101408,China [6]Lenghu Technology Innovation Industrial Park Management Committee,Lenghu 817400,China [7]Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China [8]Department of Astronomy,University of Science and Technology of China,Hefei 230026,China [9]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [10]Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China

出　　处：《Astronomical Techniques and Instruments》2024年第1期16-30,共15页天文技术与仪器（英文）

基　　金：This work is supported by“the Fundamental Research Funds for the Central Universities”,111 project No.B20019;Shanghai Natural Science Foundation,grant No.19ZR1466800.

摘　　要：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.

关 键 词：Astronomical instrumentation Optical telescopes Large-scale structure of the universe Redshift surveys Time domain astronomy Exoplanet astronomy 

分 类 号：TH743[机械工程—光学工程] P111.2[机械工程—仪器科学与技术]