flying below radar?

I had a vision this morning, and followed that by figuring out a strategy for detecting, in multi-epoch imaging, sources that are below the detection limit at any individual epoch, and which are moving too fast to be detected in the stacked image, where all epochs have been combined. Jester describes this as detecting and measuring objects that are not detectable.

This problem is harder than the problem of just measuring the proper motion of a source you already know to be there (mentioned in earlier posts), as when the proper motion is small (so the source is visible in the stacked image). Indeed, even the PanSTARRS people (to my knowledge) have no strategy for this hard (but important, given local brown dwarfs) problem. Most methods you can imagine involve testing enormous numbers of hypotheses, which clearly costs you signal-to-noise. My method—a variant on RANSAC—limits these combinatoric costs. Now to see if it works?