Radial profile before and after iEFC with the PAPLC in the narrowband Hα filter. The blue line and red line show the contrast before and after waveſront control, respectively. The contrast is two orders of magnitude lower after control. The black line shows the contrast profile for a theoretical 4th-order coronagraph that is limited by the measured MagAO-X jitter. The contrast after iEFC follows a similar decay as the 4th-order coronagraph.