Use interpolation in the skydome map settings to smooth pixels. You can play with the tiling settings to concentrate the sky within the viewing frame. The previous image used only global illumination from the skydome. This image uses both the skydome and a direct light for illumination. In each picture, the sphere shows you the procedural shader used for the skydome map in that picture. I'm sure this group could come up with more impressive skies than these. SMcQ