The Following text was taken from the ESA Science site: URL: http://isowww.estec.esa.nl/science/
An ISOCAM image of Messier 83, taken through the LW2 (7 micron) filter with a 6 arcsec pixel field of view. The spiral arms, containing the star forming regions are very prominent due to emission from dust particles and Polycyclic Aromatic Hydrogen (PAH) molecules.
This image was published in the Jun 1996 issue of the French magazine "journal des astronomes francais" (JAF).
INFRARED PROCESSING AND ANALYSIS CENTER