Craig, still not happy with 253. I've shot it so many times now and there does not seem to be a definate edge to the galaxy. It seems to just dissolve into dust. I always thought it was an imaging problem and so I have shot it over and over again and get the same result every time. This one is 4 hours with really long exposures and I got the same result so I guess the galaxy just disolves into dust on it's boundaries