Also, Quanon, a note on the Skybox for Dantooine.
At one point I investigated it. It seems to have been a cube merged with a sphere. The edges of the skybox are cube-like, but the centers of each side are boweled out like a sphere would be. It messes with the UVW Mapping and seems like a bad way to do it, but it works.
Conversely, Manaan's skybox is just two parts: a half-sphere with the top cut off, and then the top part separate... UVW on that is iffy, since the texture itself is curved like someone made a cone, cut off the point, and then unrolled it...