  After describing in short some problems and methods regarding the smoothness
of null infinity for isolated systems, I present numerical calculations in
which both spatial and null infinity can be studied. The reduced conformal
field equations based on the conformal Gauss gauge allow us in spherical
symmetry to calculate numerically the entire Schwarzschild-Kruskal spacetime in
a smooth way including spacelike, null and timelike infinity and the domain
close to the singularity.
