A specific thermal emission model is applied to observations of 67P/Churyumov-Gerasimenko surface by the high-resolution channel of VIRTIS. Signal inversion provides both an effective surface temperature (averaged inside the FoV) and a reflectance spectrum corrected from thermal emission. Details of the organic material band at 3.2 μm [1] and longer wavelengths can then be studied at resolution R ~ 1500-3000 with increased contrast and accuracy
