Hi, I saw mention of a supernova in NGC4424. Was finally able to get a shot of it from my remote observatory in New Mexico last night. It is here: file:///E:/AAAstroshow/Galaxies.html If you look on the internet using Google and look for images of NGC4424 shot weeks or years ago, you see a pretty small, non-descript fuzzy blob that is the galaxy. Now it has a really bright star just to the left of the center of the galaxy that pretty much outshines the rest of the galaxy. I cropped this image greatly. Spent most of the day writing a Visual Basic script to start with a captured image (containing no significantly bright objects) in Maxim DL and create an image from it containing ONLY bad hot and bad dark pixels. Used the resultant image to create "Bad Pixel Maps" for the binnings I was using. Worked wonderfully well. I can now automatically eliminate all of the red, green, and blue dots that showed up in my processed images. This was a real break-through for me. No more dithering required. Totally solves the problem. The bad pixels are now removed automatically when the Calibration operation is invoked. The other thing I ran down last night was that I was getting light and dark horizontal bands in my images. When I finally thought to turn off the camera's fan, they went away! So now that I know what the source is I can deal with it. I am assuming that it can be resolved by replacing the fan or by adding bypass capacitors. Electrical noise for sure generated by the fan. Thanks, Howard Anderson -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.