This is model of large, textured sphere. It's used to completely replace need for background images.
Place your scene and camera in the center of the sphere and wherever you point the camera, you
will get a proper picture in right perspective.
6 textures, covering the sphere are in 4000x4000 px, and they are painted in special manner to avoid
distortions where textures connect. Result is seamless and flawless, and can be used even for animations.
There are two sphere versions: one with spaceships in scene and other, only with stars and planets.
Model in different formats 'Without ships' with textures
Model in different formats 'With ships' with textures