PIA07556: Opposition View

Opposition View


The "opposition effect" can be seen in this image of Saturn's B ring. The bright spot occurs where the angle between the spacecraft, the Sun and the rings is near zero. Studies of the opposition effect on Saturn's rings may help scientists constrain some of the properties of ring particles, such as their sizes and spatial distribution.

Another recently released image from Cassini also shows this interesting effect of viewing geometry (see PIA07543 ).

The image was taken in visible light with the Cassini spacecraft wide-angle camera on June 26, 2005, at a distance of approximately 478,000 kilometers (297,000 miles) from Saturn. The image scale is 3 kilometers (2 miles) per pixel.

Background Info:

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 mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov . For additional images visit the Cassini imaging team homepage http://ciclops.org .

Cataloging Keywords:

Name Value Additional Values
Target Saturn Rings B Ring, Saturn
System Saturn
Target Type Ring Planet
Mission Cassini-Huygens
Instrument Host Cassini Orbiter
Host Type Orbiter
Instrument Imaging Science Subsystem (ISS)
Detector Wide Angle Camera
Extra Keywords Grayscale, Visual
Acquisition Date
Release Date 2005-08-03
Date in Caption 2005-06-26
Image Credit NASA/JPL/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA07556
Identifier PIA07556