Notes. Summary of models and calculated properties of the corresponding point spread functions (PSF’s) for the 4 cases studied. The Strehl is the peak intensity of the PSF, normalized to that of Case I, E_core the fraction of encircled energy within the diffraction core (inside the first diffraction minimum), and ΔE_wing the fraction of encircled energy added to the diffraction rings (i.e., outside the diffraction core) for Case II-IV, relative to that of Case I.