Maps of the a) spectral index and b) opacity at 1.2 mm assuming a constant core temperature of 10 K and a constant κ_{250 μm} = 0.1 cm² g^-1 value (Hildebrand 1983). The 1.2 mm map was convolved to the 2 mm band resolution, which is 19′′ (HPBW shown by the white circle in the bottom right corner). In both cases, the crosses mark the peak of the emission corresponding to the final 1.2 mm map convolved to 19′′.