Research time is getting scarce this week as I prepare for travel to Heidelberg for my annual summer spa there. I have spent what time I can reading and commenting on Dustin Lang's monumental PhD thesis (advisor: Sam Roweis). As my loyal reader knows, Lang is the author of the Astrometry.net automated calibration system, which is composed of clever geometric hashing, exceedingly fast kd-tree-based index lookup, Bayesian decision theory, and lots of web, script, and WCS candy. The thesis therefore contains both nice theory and beautiful engineering. It is a pleasure seeing it come together.
[According to Blogger (tm), this is my thousandth post to this research blog!]