The upper panel shows the spectroscopic T_eff vs. (V_T − K_S) for the giants in our sample. The filled circles show targets for which we were able to measure the reddening, whereas the open triangles have not been corrected for reddening. The solid red line shows the calibration from in Bruntt et al. (2012) based on 93 main sequence and sub-giant stars. The dashed blue line shows the calibration from Casagrande et al. (2010). The two lower panels show the residuals.