Radial MTF for different scenarios as a function of the frequency (normalized by the critical frequency of the telescope): an ideal 1-m class critically-sampled and aberration-free telescope with no central obscuration (blue), an aberration-free telescope with the 32.4% central obscuration of SUNRISE III (orange), a telescope affected only by the amount of jitter as the one sensed for the lowest-contrast image of Fig. 6 (green), a telescope affected only by the aberrations sensed through PD (red), and a telescope affected both by jitter and aberrations (violet). Compared to an ideal case, the MTF amplitude decreases when introducing wavefront aberrations and/or jitter. The net effect of these two factors effectively reduces the cut-off frequency of the telescope.