Sim 2: dependence of the inversion results on the PSF used. Power spectra of the vertical component of kinetic (top panel) and magnetic energy (middle panel) and power spectra of the total magnetic energy (bottom panel). Purple lines indicate the spectra inverted with the correct PSF. Solid and dashed lines correspond to different heights, log τ = 0 and −2.0, respectively. Blue and green lines show the result when the defocus accounted for is 4 defocus steps less or more, respectively, than the defocus used in degradation.