Spectrum of the SN2005ku (SDSS10805) host galaxy (black), together with the best STARLIGHT fit (red) and the pure nebular emission line spectrum (the difference is in blue). We note that this method accounts for the absorption produced at Balmer emission line positions. In-box panels contain the distributions of the percentual contribution of the SSP models used in the STARLIGHT fit, weighted to the mass (left) and the light (right) of the host galaxy.