Cassini caught this glimpse of Saturn's second largest moon, 1528 kilometer- (949 mile-) wide Rhea on August 16, 2004. Notable here is a brightening near the terminator.
The image was taken in visible light with the narrow angle camera from a distance of 8.5 million kilometers (5.3 million miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 86 degrees. The image scale is 51 kilometers (32 miles) per pixel. The image has been high pass filtered and magnified by a factor of four to aid visibility.
The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.