Sam and I realized that we might be able to speed up astrometry.net by making more use of the flux-ranking of stars. If, at index time, we build quads not out of random stars but out of the brightest set that meet our angular requirements, and if, at test time, we start with the brightest quad in the image and cascade to fainter quads, then we are more likely to make matches sooner. It was a great discussion, but we put many more items onto our to-do list than we took off!
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