Thursday, October 12, 2006

All the rings



Check it out - Cassini took this stunner (well, these - this is a composite) when Saturn was blocking the sun ... and found two new rings!
With giant Saturn hanging in the blackness and sheltering Cassini from the sun's blinding glare, the spacecraft viewed the rings as never before, revealing previously unknown faint rings and even glimpsing its home world.

This marvelous panoramic view was created by combining a total of 165 images taken by the Cassini wide-angle camera over nearly three hours on Sept. 15, 2006. The full mosaic consists of three rows of nine wide-angle camera footprints; only a portion of the full mosaic is shown here. Color in the view was created by digitally compositing ultraviolet, infrared and clear filter images and was then adjusted to resemble natural color.

The mosaic images were acquired as the spacecraft drifted in the darkness of Saturn's shadow for about 12 hours, allowing a multitude of unique observations of the microscopic particles that compose Saturn's faint rings. Ring structures containing these tiny particles brighten substantially at high phase angles: i.e., viewing angles where the sun is almost directly behind the objects being imaged.

During this period of observation Cassini detected two new faint rings: one coincident with the shared orbit of the moons Janus and Epimetheus, and another coincident with Pallene's orbit.
Imagine it; just imagine it. New rings!

Check out the JPL Cassini page for color-enhanced and labelled versions of the photo.

Labels: , ,

0 Comments:

Post a Comment

Subscribe to Post Comments [Atom]

     <-- Older Post                     ^ Home                    Newer Post -->