I don’t know enough about z depth to think of that – I did consider depth-of-field which I’ve used before, but I’m not competent enough with it to fiddle with it when I’m trying to get something done quickly, and I only wanted a little bit of blur to soften the star noise. Compositor’s Blur Node is something Millani showed me last year, but unlike that time I was unwilling to blur the whole thing. I could’ve easily rendered the backdrop separately and composited in GIMP, but I thought that Blender’s Compositor had to have a way to do it, and it shouldn’t be hard to figure out. Was a bit harder to figure out than I thought it would be. And the compositing would have enough effect on the final that after doing it in another program I’d’ve marked my submission Open, I wanted to keep it Pure.