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Chinese Journal of Space Science ›› 2017, Vol. 37 ›› Issue (6): 760-765.doi: 10.11728/cjss2017.06.760

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

SUN Gaofei1,2, LIU Shi1,2, ZHANG Guoyu1,2, ZHANG Yu3, LEI Jie3, MA Yiyuan3   

  1. 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
  • Received:2016-08-08 Revised:2017-04-23 Online:2017-11-15 Published:2017-11-10
  • Supported by:

    Supported by Jilin Province Key Scientific and Technological Projects (20160204008GX), National Key Laboratory Fund Project (61420020210162002) and Changchun University of Science and Technology Innovation Fund (XJJLG-2016-15)

Abstract:

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 from 0 to +5mv, with a simulation precision superior to ±0.026mv. The maximum background luminance is 3.8×105 cd·m-2, and the minimum background luminance is 6.4×10-2 cd·m-2. The designed light source system can meet the requirements for simulating the stellar map with a sky background.

Key words: Adjustable background, Controllable magnitude, Multi-Star simulator, Light source

CLC Number: