Optical system research of multi-object fiber spectroscopic survey telescope
Optical system research of multi-object fiber spectroscopic survey telescope作者机构:National Astronomical Observatories/Nanjing Institute of Astronomical Optics&TechnologyChinese Academy of SciencesNanjing 210042China CAS Key Laboratory of Astronomical Optics&TechnologyNanjing Institute of Astronomical Optics&TechnologyNanjing 210042China School of Astronomy and Space Science&Key Laboratory of the Ministry of EducationNanjing UniversityNanjing 210023China Observatories of the Carnegie Institution for Science813 Santa Barbara StreetPasadenaCA 91101USA
出 版 物:《Research in Astronomy and Astrophysics》 (天文和天体物理学研究(英文版))
年 卷 期:2021年第21卷第6期
页 面:199-206页
核心收录:
学科分类:07[理学] 070401[理学-天体物理] 0704[理学-天文学]
主 题:telescopes techniques:miscellaneous techniques:spectroscopic methods:miscellaneous surveys instrumentation:miscellaneous
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 *** aperture in 6.5 m and field of view 3°are taken for these optical *** 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 *** 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 *** the limit of size of fused silica and optical glass,the maximum diameter for lens is about 1.7 *** a 6.5 m telescope is about the largest one if using the above *** 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 *** ideas are introduced in the last section of this paper.