Spectral energy distribution of Sher 25. A comparison of the reddened model flux (solid blue line) to photometric and spectrophotometric measurements (upper panel) and the difference between modelled and observed parameters measured in magnitudes (lower panel) are shown. A blackbody contribution (black dashed line) with a temperature of T = 1800 K is assumed in addition to the stellar SED (black solid line). The grey line depicts Gaia spectrophotometry. Symbol assignment is the same as in Fig. 7. In addition, near-UV Swift/UVOT photometric measurements (diamonds) are shown. Results of synthetic photometry on the model SED in the respective pass bands are also indicated (plus signs). The error bars in the lower panel depict the 1σ uncertainty range.