Views of the GC region centred on the Sgr B region (represented by the black box) and smoothed to a common resolution of 0.2° with the beam shown in the lower left-hand corner. a) Fermi-LAT count map obtained by admitting only γ-rays above 6 GeV, using a linear transfer function and the intensity runs from 0 to 15 counts/bin. b) Planck dust opacity map obtained from the Planck collaboration (Planck Collaboration XIX 2011). This image has had a logarithmic transfer function applied to it to enhance the diffuse emission, and its scale runs from 0 to 4.5 × 10^-8.