Optical system research of multi-object fiber spectroscopic survey telescope  

作　　者：Hua Bai Ding-Qiang Su Ming Liang Stephen A.Shectman Xiang-Yan Yuan Xiang-Qun Cui 白华;苏定强;梁明;Stephen A.Shectman;袁祥岩;崔向群(National Astronomical Observatories/Nanjing Institute of Astronomical Optics&Technology,Chinese Academy of Sciences,Nanjing 210042,China;CAS Key Laboratory of Astronomical Optics&Technology,Nanjing Institute of Astronomical Optics&Technology,Nanjing 210042,China;School of Astronomy and Space Science&Key Laboratory of the Ministry of Education,Nanjing University,Nanjing 210023,China;Observatories of the Carnegie Institution for Science,813 Santa Barbara Street,Pasadena,CA 91101,USA)

机构地区：[1]National Astronomical Observatories/Nanjing Institute of Astronomical Optics&Technology,Chinese Academy of Sciences,Nanjing 210042,China [2]CAS Key Laboratory of Astronomical Optics&Technology,Nanjing Institute of Astronomical Optics&Technology,Nanjing 210042,China [3]School of Astronomy and Space Science&Key Laboratory of the Ministry of Education,Nanjing University,Nanjing 210023,China [4]Observatories of the Carnegie Institution for Science,813 Santa Barbara Street,Pasadena,CA 91101,USA

出　　处：《Research in Astronomy and Astrophysics》2021年第6期199-206,共8页天文和天体物理学研究（英文版）

摘　　要：In the first part of this paper,four different Cassegrain optical systems with their correctors are designed and studied for multi-object fiber slit spectroscopic survey.The aperture in 6.5 m and field of view 3°are taken for these optical systems.Assuming observation wavelength range is 0.365-0.95μm,the maximum zenith distance for observing is 60°,the maximum diameter of these lenses is 1.66 m,the altitude of the telescope site is 2500 m,two correctors are composed of 4-piece lenses and the other two are 5-piece lenses.The results obtained are:f-ratio about 3.7,the image quality for all four systems with EE80D≤0.60″,the linear diameter of the focal surface is about 1.2 m and 11 000 fibers can be set on it.Considering the limit of size of fused silica and optical glass,the maximum diameter for lens is about 1.7 m.Such a 6.5 m telescope is about the largest one if using the above correctors.Considering the multiobject spectroscopic survey is greatly important,we also studied some telescope optical systems having their aperture near or larger than 10 m used for the multi-object fiber spectroscopic survey.Such ideas are introduced in the last section of this paper.

关 键 词：telescopes techniques:miscellaneous techniques:spectroscopic methods:miscellaneous surveys instrumentation:miscellaneous 

分 类 号：P111[天文地球—天文学]