These pictures are remarkable.
However, something like the same ideas, combining the occaisional good shots in a sequence of blurred images, has been used for sometime in "gating" in medical imaging, where motion artifacts are removed by using ony shots corresponding to the hearts beat sequence.
Similarly, high speed strobes, allows one to observe rotors spinning at high speed for signs of damage!
Here, however, the astronomers have to select the rare images through an irregularly changing layer of atmospheric distortion. This is much harder and a brilliant achievement!
Still, I wonder why no one thought of this before!
Asher