Averages of 10 000 images that show the resulting coronagraphic PSFs when the LDFC loop is closed and open. (a) Average PSF when the LDFC loop is open. (b) Average PSF when the LDFC loop is closed. (c) Average PSF when the LDFC loop is open and the reference PSF is subtracted. (d) Average PSF when the LDFC loop is closed and the reference PSF is subtracted. The colorbar shows the normalized intensity in logarithmic scale and is equal for all subfigures.