Thanks, I made them in Cinema 4D using the noise shaders to create the nebulas on the inside of a large sphere, I used similar techniques to this sky tut but with purples/blues etc
http://www.psionic.pwp.blueyonder.co.uk/c4dtuts/c4dsky.htmlI also created a camera in the centre of the scene, with the FOV set to 90 degrees and the render size a square aspect (512x512) then rendered, rotated the cam 90 degrees, rendered etc etc for all 6 sides..manually ;-))