A very clever technique (and British technology, dammit!), which may well allow kit that's no longer leading edge (like Palomar) to get a new lease on life. But I wonder if it could be used on leading edge kit, because (presumably) it must require substantially longer observation times, while you're waiting for a sufficient number of these 'lucky' moments to occur and observing time on these instruments is in great demand.

It's noticeable that the pics on the Cambridge U web site show relatively 'bright' objects. It's also the case (to my untutored eye) that the image of the Cat's Eye nebula doesn't show as much detail as existing images - e.g.

www.astro.psu.edu/~mrichards/figures/Cats_Eye_Nebula.jpg