This disk contains the JPEG color images of 20 planetary nebulae. Each frame is documented. The files were created using GIF converter 2.3.2 - standard Mac software downloaded along with Mosaic. These files, typically 6K in size, are suitable for use with Mosaic.However, each file contains a resource fork. They must be converted to RAW format (using, say, Fetch) before non-Mac computers can read them. These files are distributed under the condition that they will not be used for profit, sold, or limited in their distribution in any way. In addition, the contents of this "00readme first" file must be distributed with the images. If you cannot agree to these conditions then please do not use the images at all. Bruce Balick Astronomy FM-20 University ofWashington Seattle WA 98195