Extinction map of the Corona Australis cloud complex smoothed with a Gaussian kernel. The resolution of the map is FWHM = 1 deg. The area enclosed by the solid polygon contains the cloud complex while avoiding contamination from the Sagitarius Dwarf Galaxy (SDG) and was used to compute the mass of the cloud (in Sect. 3.2). The two circles delimit the SDG field (red) and the Control field (black) discussed in Fig. 6. The “head” (orange) and the “tail” (blue) regions are discussed in Sect. 4.