Modelling the HST PSF using a Moffat and a Gaussian function. A comparison of bulge Sérsic indices, effective radii, effective surface brightnesses, and point source magnitudes for a dozen LeMMINGs galaxies obtained from multiple Sérsic model fits PSF-convolved using a Moffat and a Gaussian function. To explore the marked effects of the HST PSFs in the HST data, the galaxies were selected to have a steep inner light profile slope. The solid lines represent one-to-one relations. The good agreement between the best-fitting structural parameters suggests that the light profile decomposition does not depend appreciably on selecting either of the two HST PSF modelling functions employed.