摘要
极大望远镜由于其口径大、焦比快的特点,与大、中、小型望远镜相比在镜筒设计上有更高的位置精度和动力学要求.为了设计满足要求的极大望远镜镜筒,保证极大望远镜成像质量,根据中国极大望远镜的镜筒设计参数与要求设计了笼式镜筒和脚架镜筒.通过对比评估,确定最优方案,并对最优方案进行优化.经过分析优化,极大望远镜的镜筒采用脚架结构,主副镜轴向最大相对位移1.61 mm,径向最大相对位移4.58 mm,最大相对偏转角1.29′,镜筒固有频率4.21 Hz,满足设计要求.首次针对极大望远镜设计满足要求的全钢材脚架式镜筒,为极大望远镜,焦比快的望远镜在这方面的工作提供了技术储备.
Because of large caliber and small focus ratio,the giant telescope has higher positional precision and dynamics requirements in the design of the telescope tube,compared with large,medium,and small telescopes.In order to design the telescope tube which meets the above requirements and ensure the image quality of the telescope,the cage tube and the quadripod structure are designed according to the particularity of the giant telescope.By comparing and evaluating,the optimal scheme is determined and optimized.After analysis and optimization,the maximum relative axial displacement of the primary and secondary mirrors is 1.61 mm,the maximum relative radial displacement is 4.58 mm,the maximum relative deflection angle is 1.29′,and the natural frequency is 4.21 Hz,which meets the design requirements.Steel quadripod tube of giant telescope which meets the requirements,for the first time,is designed in this paper,which provides a technical reserve for the work of the giant telescope or telescope with small focus ratio.
作者
徐洁倩
王国民
崔向群
XU Jie-qian;WANG Guo-min;CUI Xiang-qun(Nanjing Institute of Astronomical Optics&Technology,National Astronomical Observatories,Chinese Academy of Sciences,Nanjing 210042;Key Laboratory of Astronomical Optics&Technology,Nanjing Institute of Astronomical Optics& Technology,Chinese Academy of Sciences,Nanjing 210042;University of Chinese Academy of Sciences,Beijing 100049)
出处
《天文学报》
CSCD
北大核心
2018年第6期63-73,共11页
Acta Astronomica Sinica
基金
中国科学院知识创新工程重要方向项目(Y0A0061000)资助
关键词
望远镜
仪器
自适应光学
方法
分析
方法
数据分析
telescopes,instrumentation
adaptive optics,methods
analytical,methods
data analysis
