You can find complete details on the build here If you really want to flex your love of determinism, have I got the paper towel holder for you! This paper towel holder adapter uses the kinematic mount points of my little turntable. Finally, a paper towel holder with a central axis that's stable despite CTE differences...amma right?...so unnecessary :)

Also, aside, but how about that mystic glow of "dirty camera lens"?