fast-resolve residual data of the ESO137-006 reconstruction. The left panel shows the fast-resolve residual data of the last minor cycle in arbitrary units. On large scales, no significant structure of the source are left in the residual, except for some small structures at the corners of the box containing the source ESO137-006. The right panel shows a zoom into a representative region marked by the box on the left. The zoomed image shows many point sources that are not fitted by the fast-resolve reconstruction, but are left in the residual data.