Shot recreation from Rogue one. The Death Star's textures ended up being 16K resolution to capture the small details of the surface and small surface structures. The darker sections of the two hemispheres were painted in photoshop using the recreated hemispheres from Rogue one, featured in the youtube video "Star Wars Archaeology Panel | Star Wars Celebration Europe 2016". link below. These were then converted into a normal map in Ndo along with various layers of noise and displacement maps which were generated in JSplacment.
Star wars panel featuring John Knull of ILM:
https://www.youtube.com/watch?v=JUafi3EWBY8