2006-02-26

all-sky images, astrometric WCS tweak

I spent an inordinate amount of time on the weekend tracking down a bug in the (hacked) astrometry.net prototype tweak code (take an image with a close-to-correct WCS and make it beautiful, using either SDSS or USNO-B1.0 stars). I got it, and Willman is now solving her astrometry on a bunch of images. This week is the astrometry.net group meeting, so I hope to get that code re-written by a competent programmer.

I downloaded the Bright Star Catalog, and wrote a reader for it, and plotted it—it contains all stars brighter than about V=6.5 mag—for use in some SDSS demos we make, including our famous zoom, which is very out of date. I am preparing to re-make it, but this time it will show all the constellations!

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