Slight modifications to the second part of the bit about the Virgo cluster. http://www.rhysy.net/virgo-explorer.html
By which I mean the .blend containing the 781 images of Virgo cluster galaxies in position-velocity space is now available. I tidied up the script a bit, but it's still rough around the edges. Should be fine for just looking at the pretty pictures though.
I'm currently trying to export this to WebGL format via blend4web. That should be a lot more interesting since anyone could view this interactively in a browser without Blender. For now, here's a nice gif.
