I scanned this image from my Banthatracks number 28, 1985. The blurb reads:
On November 12, 1980, scientists at Jet Propulsion Labratory were amazed as the image scanned across their monitor screens. As the picture of Saturn's moon 'Mimas' took shape, they realized it looked like another familiar celestial object--The Death Star.
Then, the caption for the image of Mimas says Office of Public Information, Jet Propulsion Labratory, California Institute of Technology, National Aeronautics and Space Administration, Pasadena, California 91109