Image 55 of 442: Full Resolution

And the result of the donut test is... check out that donut! Look in the third panel, and you can see a very faint ring, showing the difference in PSF from a star (center) and Arrokoth (left). That means that we're finally resolving Arrokoth. It's no longer a point source, but is just barely resolved... perhaps only 1.1 pixels across now, but that counts!