eROSITA normalized point-source profiles as a function of redshift in bins of 20 kpc. Each curve represents the average point-source profile in a redshift bin of width of 0.05: 0.05–0.1, 0.1–0.15, 0.15–0.2, 0.2–0.25, 0.25–0.3. The labeled number gives the mean redshift of the bin. At the mean redshift of the sample (z ∼ 0.2), the half width at half maximum (HWHM) of the empirical PSF corresponds to about 60 kpc.