Multi-wavelength observations are mandatory to understand the physical properties of astrophysical sources .
In this paper we use observations in the far infrared to radio range to derive the spectral energy distribution ( SED ) of the Carina nebula .
To do this , we carefully subtract the irregularly varying diffuse emission from the Galactic plane , which can be of the order of 10 \% of the nebula flux at these wavelengths .
We find that the far infrared SED can be modeled as emission from a dust population with a single temperature T _ { d } = ( 34.5 ^ { +2.0 } _ { -1.8 } ) , and with a spectral index of emissivity \alpha = -1.37 ^ { +0.09 } _ { -0.08 } .
We also find a total infrared luminosity of the Nebula of ( 7.4 ^ { +2.5 } _ { -1.4 } ) \times 10 ^ { 6 } L _ { \odot } and , assuming a single temperature of the dust , a mass of the dust of ( 9500 ^ { +4600 } _ { -3500 } ) M _ { \odot } .