A Light Source System of Multi-star Simulator with Adjustable Background and Controllable Magnitude

查看全文 作　　者：SUN [1,2]Gaofei;LIU [1,2]Shi;ZHANG [1,2]Guoyu;ZHANG [3]Yu;LEI [3]Jie;MA [3]Yiyuan 机构地区：[1]College of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022;[2]Optical Measurement and Control Instrumentation, Jilin Province Engineering Research Center, Changchun 130022;[3]Key Laboratory of Space System Simulation, Beijing 100853 出　　处：《空间科学学报》索引2017年第37卷第6期,共6页 基　　金：Supported by Jilin Province Key Scientific and Technological Projects(20160204008GX);National Key Laboratory Fund Project(61420020210162002);Changchun University of Science and Technology Innovation Fund(XJJLG-2016-15) 摘　　要：A light source of multi-star simulator capable of background adjustment and magnitude control has been designed.Two integrating spheres are employed as the star-point light source and the background light source respectively.A beam splitter prism has been designed to serve as the beam combiner for the star-point and the background light sources,and a mathematical model has been constructed respectively to compute the light flux of the two integrating spheres.A magnitude testing system and a background testing system have been created using low-light illuminometer,luminance meter,and testing instruments to measure the star-point magnitude and the background luminance of the multi-star simulator.The test results suggest that the star-point magnitude is adjustable from0 to+5 m_v,with a simulation precision superior to ±0.026 m_v.The maximum background luminance is 3.8×10~5 cd·m^(-2),and the minimum background luminance is6.4×10^(-2)cd·m^(-2).The designed light source system can meet the requirements for simulating the stellar map with a sky background. 关 键 词：Adjustable background Controllable magnitude Multi-Star simulator Light source