Dereddened spectral energy distribution of V383 Sco obtained from the data given in Table 5 (points). The dashed line (blue in the electronic version of this paper) shows the F0I-type supergiant from the 1993 Kurucz Stellar Atmospheres Atlas (Kurucz 1993). The dot-dashed line (red in the electronic version) marks the SED of the SRb-type pulsating star RX Boo, built using the VOSpec virtual observatory tool. The dotted line (magenta in the electronic version) shows a black body with T = 500 K. The continuous line (orange in the electronic version) shows the sum of all 3 components appropriately rescaled (by a factor of 1.9 × 10^-20 for the Kurucz model of an F0I star and by a factor of 1.3 × 10^-4 for the observational SED of RX Boo) to fit the SED of V383 Sco. Triangles denote IRAS data with very low flux density quality (marked with the number 1 in the revised version of the IRAS Point Source Catalog), i.e. upper estimates: from the IRAS FSC catalogue (filled triangles) and from the IRAS PSC catalogue (open triangles).