Fits to the observed spectrum of NGC 1566 using the STARLIGHT code (Cid Fernandes et al. 2005). In black is the observed total flux spectrum (as shown in Fig. 4, top panel), in red is the synthetic spectrum obtained with the code (that is composed of the stellar component in orange and of the AGN component in yellow), and in green are the residuals. Negative fluxes in the residuals are due to the uncorrected telluric absorption lines.