I can locate many sites with freely downloadable HDRi spheremaps of earthly surroundsings (gardens, ruins, deserts etc) to use as spherical texture background environment. But I can locate nearly nothing when it comes to outer space, especially containing a low orbit planet, including decent atmosphere, clouds etc etc. Of course, the latter are artificialy usually, unless it’s earth … as fotographers have some difficulties out in space I know there’s ways to do it differently, but I’d like to locate such spherical maps … I find them easiest to handle for a quick, nonrenderintensive Sci Fi setting. It should contain the planet with its strongly luminous atmopshere, though, to create some decent lighting.
Does anyone know where to get this? Alternatively, a procedural planet generators, but I have yet to see one creating realistic low orbit pictures. Terragen maybe?
Sphere or Cube with procedural universe on the inside.
Create second sphere with rectangular texture mapped to it, set it to perfect mirror and bake the outer sphere on the inner one.
You get nice results and also can place random procedural planets inside your miniverse.