Lang and I, working towards the Astrometry.net main paper, built an SDSS-based quad index and verification system (using the command-line tools of the Astrometry.net codebase), optimized to calibrate (blind) images as small as those produced by the Hubble Space Telescope. We succeeded in calibrating some images.
We spent the evening—into the wee hours—working on computational photography (treating the output of the Astrometry.net digital camera as scientific data). That's Friday night at Astrometry.net world headquarters! While we hacked, Stumm was being wined and dined by the museum set at the American Association of Museums Annual Meeting for his work on web-2.0 museum interactions with Flickr and Astrometry.net.