Yongxing Yang1,2, Xinrui Wang1,2, Yunzhi Zhu3, Xinhua Lai4..., Qitong Li1,2, Beibei Chen1,2, Jingyuan Zhang1,2 and Jinpeng Li1,2,3,*|Show fewer author(s)
Author Affiliations
1University of Science and Technology of China, Hefei 230022, Anhui, China2Nanjing Research Center of Astronomical Instruments, University of Science and Technology of China, Nanjing 210042, Jiangsu, China3Nanjing Astronomical Instruments Co., Ltd., Chinese Academy of Sciences, Nanjing 210042, Jiangsu, China4Mathematics & Science College of Shanghai Normal University, Shanghai 200234, Chinashow less
Fig. 1. Lightpath of high precision jitter compensation system
Fig. 2. Lightpath of multiple target synthetic star map
Fig. 3. Lightpath for detecting vibration signals
Fig. 4. Frame of compensation mirror
Fig. 5. Zemax ray tracing diagram
Fig. 6. Star map on the detector image plane
Fig. 7. Compensation system resolution test results
Fig. 8. Detection star calibration function
Fig. 9. Test results of jitter compensation accuracy
Fig. 10. Test lightpath diagram
Fig. 11. Picture of performance test of jitter compensation accuracy
Fig. 12. Compensation mirror deflection test results along different axes. (a) X axis; (b) Y axis
Fig. 13. Compensation accuracy test results
Fig. 14. Measured star map
Fig. 15. Uncompensated star point scatter diagram
Fig. 16. Compensated star point scatter diagram
Model type | Setting |
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Light source | Source point; Total rays:100000; Polarization:random polarization; Cone angle:3° | Jitter compensation mirror | Silver-plated film; Reflectivity:98.7%; Wavelength:0.4-0.9 μm | Starlight collimating lens | Field:±6.3°; Aperture value:40 mm; Effective focal length:330.046 mm | Off-axis triple reflection system | Object type:paraxial lens; Focal length:3000 mm | Detector | Type:detector rectangle; Full width at half maximum:2.5 mm; Pixel No.:1000 | Small reflector | Diameter:20 mm; Surface property:silver plated reflective film |
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Table 1. Ray tracing parameters
Measurement serial number | Deflection angle /μrad | Star center coordinates /pixel |
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1 | 600.00 | 461.15315 | 2 | 600.05 | 461.11479 | 3 | 600.10 | 461.06843 | 4 | 600.15 | 461.02907 | 5 | 600.20 | 460.98971 | 6 | 600.25 | 460.94293 | 7 | 600.30 | 460.90499 | 8 | 600.35 | 460.86563 | 9 | 600.40 | 460.82927 | 10 | 600.45 | 460.78291 | 11 | 600.50 | 460.73255 | 12 | 600.55 | 460.69818 | 13 | 600.60 | 460.65982 |
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Table 2. Compensation resolution test results
Category | Parameter |
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Multi-star dot board | Diameter:77 mm; Transmittance:0.0001 | Single star dot board | Diameter:12.7 mm; Transmittance:0.0001; Star point size:50 μm | Starlight collimating lens | Field:±6.3°; Aperture value:40 mm; Effective focal length:330.046 mm | Off-axis triple reflection system | Field:±2°; Focal length:3000 mm; Light output aperture:300 mm | Detector | Type:detector rectangle; Full width at half maximum:2.5 mm; Pixel No.:1000 | Star sensor | Field:±2°; Focal length:1000 mm |
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Table 3. Star simulation experiment parameters