The SED of IRAS 18345. The filled circles show the data in WFCAM K band, IRCAM L′ and M′ bands, Spitzer-IRAC Bands 1 and 3, michelle 12.5 μm, IRAS 60 μm, AKARI at 65–140 μm, Spitzer-MIPS 70 μm, SCUBA 450 and 850 μm, Bolocam 269 GHz and IRAM 240 GHz data. The downward-directed triangles show AKARI-IRC 18 μm, MSX band-E and WISE band-4 data which are treated as upper limits. The continuous line shows the best fit model. The grey lines show subsequent good fits for () per data point <3. The dashed line corresponds to the stellar photosphere for the central source of the best fitting model, as it would look in the absence of circumstellar dust (but including interstellar extinction).