Thanks to Arne who gave me a chance, I have used iraf to chop a piece out of a large image. This now has a complete fits header that seems to work when the image is examined with DS9. As Michael would say: Rah! The image is 291 KBytes zipped, so I don't want to send it through the list. If someone can put it up where people who want it can get it, let me know and I will send it. Tom Droege