Here's a couple of apo renders I've used in some of my art. I dropped them in a gallery folder on my DA because they are ginormous. They're really good for nebula and explosions in space art though. Feel free to grab any or all of them. I'm going to add more as I make them but on this machine each render takes about 6 hours.

http://ekeller22.deviantart.com/gallery/46268916

Same here. Really like the red one. Thanks a million!