Flux density distribution of RMC 143 from IR catalogues and our ALMA and ATCA measurements. The dust component shown is a greybody fit to the MIPS24, PACS100, PACS160, and ALMA photometry. The grey and green bands show the ranges of values within twice the minimum χ² for the dust greybody and nebula free-free fits, respectively. We note that the AKARI S11 and L15 photometry have a colour correction applied assuming a T = 70 K, β = 1 greybody.