Fig. 1. The schematic diagram of AO system for correction

Fig. 2. The real experimental optical path of AO system for the NCPA measurement and correction

Fig. 3. Initial focal plane PSF

Fig. 4. Reference PSF and PSFs after correction. (a) Reference PSF image; (b) and (c) are the PSFs corrected with different exposures by using J

Fig. 5. Metric function evolution as a function of iteration steps

Fig. 6. PSF corrected by using J_o

Fig. 7. PSF corrected by using J_lg