Fig. 1. Working principle of equipment

Fig. 2. Optical structure of stellar ultraviolet radiometer

Fig. 3. Performance comparison of dichroic mirror

Fig. 4. Detection channel schematic

Fig. 5. Optical design of stellar ultraviolet radiometer

Fig. 6. Imaging channel spot diagram

Fig. 7. Detection channel energy concentration

Fig. 8. Outfield test

Fig. 9. Guide star situation

Fig. 10. Relationships between measured data and atmospheric mass. (a) Results of processing the measurement data; (b) linear fitting results

Fig. 11. Atmospheric transmittance of each subchannel

Fig. 12. Comparisons of atmospheric transmittance measurements with simulation results. (a) u1; (b) u2; (c) u3; (d) u4