In this paper we present a dust emission map of the starless core TMC-1C taken at 2100 µm .
Along with maps at 160 , 450 , 850 and 1200 µm , we study the dust emissivity spectral index from the ( sub ) millimeter spectral energy distribution , and find that it is close to the typically assumed value of \beta = 2 .
We also map the dust temperature and column density in TMC-1C , and find that at the position of the dust peak ( A _ { V } \sim 50 ) , the line-of-sight-averaged temperature is \sim 7 K. Employing simple Monte Carlo modeling , we show that the data are consistent with a constant value for the emissivity spectral index over the whole map of TMC-1C .