Paul, There's a nifty free utility available called GSpot. Google it and you'll find lots of secure DL sources. Drag any video, audio, or image file onto it, and you'll get the kind of info you're looking for. Haven't tried it with a FIT file, but it might be worth a try. Dan Heim On 8/28/2011 12:36 PM, pulind@xxxxx wrote: > Photoshop won't allow adjustment layers to be added to my FITs images, but > it will allow this on FITs images from the book "Photoshop Astronomy". How > do I find the diference in file formats between those images and mine? Is it > possible that the author has embedded JPEG images into a FITs wrapper? > > Paul Lind > > -- > See message header for info on list archives or unsubscribing, and please > send personal replies to the author, not the list. > > > > -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.