Radial and transversal cuts of the E-ELT SCAO PSF obtained with the Fourier-based simulation under median seeing conditions with L₀ = 25 m. Reference source off-axis distances are 20″ (solid lines), 40″ (dashed lines), and 60″ (dotted lines). The PSF intensity is normalized to the PSF K-band Strehl ratio: the maximum intensity is equal to the Strehl ratio (25%, 6%, and ≈2%, respectively). Radial and transversal cuts appear superimposed.