Upper panels: 32 × 32 arcsec frame in the r′ filter showing the LSB galaxy PEG J231956+081253.7 (left) and the residuals left by the subtraction of the model built from the brightness profile obtained with ELLIPSE (right). Lower panels: Sérsic law fits to the absorption corrected g′, r′ and i′ brightness profiles of the LSB galaxy PEG J231956+081253.7. The residuals Δμ = μ(obs)−μ(fit) are shown in the lower panel. The dotted vertical lines indicate the inner region of the profiles excluded to perform the fits in order to avoid seeing effects.