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Optical system is the core component of autonomous navigation star sensor to realize the collection of star light and high-precision attitude measurement. In this paper, the optical system of high precision star sensor was taken as the research object, the influence mechanism of the accuracy of optical system for detecting different color temperature stars were studied and analyzed. It is difficult to suppress the centroid drift caused by the changes of star color temperature and ambient temperature through later calibration, which needs to be controlled under the stage of optical design. The calculation model and allocation method of optical system design wavelength weight were established, and the performance evaluation was carried out. In addition to the conventional energy concentration, distortion and asymmetric aberrations, the centroid drift of star color temperature and ambient temperature change were proposed as the main index of accuracy evaluation. According to the application requirements, a long focal star sensor optical system based on space satellite platform was designed, with the focal length of 95 mm, the relative aperture of f 2.4, the field view of 8°× 8°, the spectrum range of 450-1 000 nm, and the energy concentration of more than 85% in 3×3 pixels. Based on the regular glass materials, the lateral color aberration of the optical system was corrected under ultra-wide spectral range and long focal. The lateral color aberration of the full field was less than 0.9 μm; The results of accuracy analysis show that the accuracy of centroid position is less than 0.36 μm in the range of 2 600-9800 K, and the change of focal length is less than 2.7 μm in the range of 0-40℃, and the accuracy of centroid position caused by temperature is less than 0.45 μm.

According to the characteristics of a catadioptric omnidirectional imaging system in larger fields and higher noise shielding,the catadioptric omnidirectional optical system with a field of view in 360° horizontal azimuth and 45° to 90° elevation and operating in the region of Solar Blind UV was developed to detect UV targets.The key elements of the UV detection technology were overviewed and the design parameters for the catadioptric omnidirectional imaging system in Solar Blind UV(SBUV) were determined.Based on the aberration theory and characters of UV optical system, the processes of optical design including the allocation of parameters,solution of initial structure and the lens splitting were presented.The design results show that the diameter of 80% encicled energy of SBUV panoramic imaging system is 20 μm,which is smaller than the pixel size of ICCD,and the MTF value of the system is higher than 0.7@17lp/mm over all fields.These data satisfy the requirements of the system.Furthermore,experiments are carried out to verity the feasibility of panoramic imaging in corona detection,and the results indicate that the image obtained has good quality.