X-ray analysis of A1068. Upper left panel:Chandra 0.5–7.0 keV image. The black arcs indicate the position of cold fronts. The green and red ellipses represent the shape of the extraction regions. Upper central panel: GGM filtered image. Upper right panel: Residual image after the subtraction of a double β-model. Middle left panel: SB profiles extracted using regions with ellipticity ratio of 2.0. Middle central panel: SB profiles extracted using regions with ellipticity ratio of 1.15. Middle right panel: best-fitting double β-model (blue line) with associated residuals of the NW profile (ellipticity ratio of 1.15). Lower left panel: same as before for the SE profile (ellipticity ratio of 2.0). Lower right panel: same as before for the SW profile (ellipticity ratio of 2.0).