Continuum images of IRAS 16293-2422 at 1.3 mm (left) and 0.87 mm (right). In the left panel the contours are given in steps of 0.1 Jy beam^-1 to 1.0 Jy beam^-1 and from there in steps of 0.2 Jy beam^-1 and in the right in steps of 0.2 Jy beam^-1 to 2.0 Jy beam^-1 and from there in steps of 0.4 Jy beam^-1 (in the continuum data the noise level is determined by the interferometer dynamic range). The white plus-signs indicate the pointing centers of the observations, except those from 2007 March 22 for which the pointing center is indicated by the black plus-sign in the right panel.