Comparison between fastwind (full black line) and LLmodels (dashed red line) theoretical fluxes, calculated with the fundamental parameters derived for HD 47777, with TD1 (green triangles), Johnson (red pluses), 2MASS (blue diamonds), Spitzer-IRAC (black crosses), WISE (purple squares), and Spitzer-MIPS (yellow asterisk) photometry converted into physical units. The UV and optical spectral regions are shown in the left panel, while the right panel shows the IR band. The synthetic fluxes take into account the cluster distance and reddening given in the text and a stellar radius of 3.50 R_⊙. The horizontal bars show the full width at half maximum of the photometric filters.