Hide and Seek with Janus. Click for larger. Image Credit: NASA/JPL/Space Science Institute

The folks at Cassini almost got me – almost. I saw this image as a thumbnail and was thinking “gee that’s Janus, seems awful big?”. A second look and the little moon stood out pretty easily against the larger moon Rhea and behind the rings.

I especially like this particular look at the rings.  You need to see the image larger to appreciate it fully, give the image above a click.

You can see the image and caption in their original context at the NASA page and here’s some excerpts:

The small moon Janus is almost hidden between the planet’s rings and the larger moon Rhea.
The northern part of Janus can be seen peeking above the rings in this image of a “mutual event” in which Janus (179 kilometers, or 111 miles across) moved past Rhea (1,528 kilometers, or 949 miles across). Mutual event observations such as this one, in which one moon passes close to or in front of another, help scientists refine their understanding of the orbits of Saturn’s moons.
The view was acquired at a distance of approximately 2.7 million kilometers (1.7 million miles) from Janus and about 3.1 million kilometers (1.9 million miles) from Rhea. Rhea is a slightly overexposed in this image.
This view looks toward the northern, sunlit side of the rings from just above the ringplane.