Spectral energy distribution of the Carina Nebula complex. The thick squares show the fluxes derived from our Herschel maps for a 1° radius area. The crosses show the mid- and far-infrared fluxes determined from the IRAS and MSX maps by Smith & Brooks (2007) for a very similar region. The cross with the upwards triangle shows the lower limit to the total 870   μm flux derived from our LABOCA map that covered the central 1.25°  ×  1.25° area. The diamond symbols show the fluxes taken from Salatino et al. (2012). The thick solid line is the sum of the spectrum resulting from the radiative transfer model and a power-law spectrum of the form (following Salatino et al. 2012).