I first heard about deconvolution many years ago from a friend who told me about the image-processing software CCD Sharp
from Santa Barbara Instrument Group. When you used the software, and if everything was just right, you watched in awe as your celestial image mysteriously sharpened.
The one drawback to this procedure was the background of your image: More often than not, it “curdled” and ended up looking like cottage cheese.Astronomy magazine subscribers can read the full column for free. Just make sure you're registered with the website.