here's a real rig - called pixelorb - costs about $13,000

http://www.peaceriverstudios.com/pixorb/index.html

they used it for the 17 gigapixel yosemite pano here:

http://www.yosemite-17-gigapixels.com/

and then check this one out:

http://www.xrez.com/yose_proj/yose_deepzoom/index.html

zoom in and once you see little pix, keep on zooming right into those. Mouse wheel is fastest to zoom