Barron showed up today and we worked on getting the USNO-B paper ready for resubmission, after a very prompt (thanks, anonymous referee!) referee report from the AJ. We also discussed his system for determination of image dates, which involves precise astrometric calibration to a set of minutely different astrometric catalogs (each set to a different epoch), and decided that we should write it up now, with the thought that writing it up will focus the issues.
Mierle and I spent a few minutes discussing astrometric tweak
at the end of our new, weekly Astrometry.net telecon; getting the output of Astrometry.net to be precise enough for use—unmodified—by scientific users is at the top of our priorities for the coming months. Mierle and I are convinced that a ransac-like approach will work, though neither of us has demonstrated this with functional code. Roweis and Lang are not convinced. Mierle put a bunch of tickets in our trac system to help get a ransac testbed working.
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