Two-dimensional, two-component (PSF + Sérsic) fit to the GN20 light distribution. The panels represent the original MIRI F560W image (top left), the best-fit model obtained with Lenstronomy (top right), and its residuals (bottom left), respectively. Bottom right panel shows the radial profile of the original image (blue dots), best-fit model (black line), and residuals (red crosses) maps. In addition, blue and orange dashed lines represent the radial profiles of the nuclear point-source and extended components used in the modelling of the light distribution. Contours represent the F560W isophotes at 5σ, 10σ, 20σ, and 35σ levels.