Re: [Utah-astronomy] Curious Saturn image

Maybe they're dust or electronic hot spots or noise on the CCD chip, showing up in a raw image. Possibly NASA will process it and they will disappear. I know that when I try (TRY is the operative word!) to use my Meade CCD tracker, for every new exposure time I'm supposed to make a dark frame. This is done with the lens cap on so that light doesn't expose the chip. The microscopic computer brain in the tracker makes note of all the places where noise shows up so that it can discount them when actually guiding. -- Joe