Negative and positive reproduction of a very deep exposure of the M84/M86 region of the Virgo Cluster. While on the negative some fainter detail can be recognized easier, the positive resembles more the visual impression in a hypothetical high-sensitivity instrument. Note how much larger the galaxies appear in this image than in less deep images of this region (e.g., those in our collection). You may also compare this image side by side with a conventional one.
Above images are copyrighted and may be used for private purpose only. For any other kind of use, including internet mirroring and storing on CD-ROM, please contact Coral Cooksley of the Anglo Australian Observatory.
For technical info on deep astrophotography, look at David Malin's webpage on special photographic techniques.
Last Modification: 26 Apr 1998, 17:45 MET