Rhea From about 50,000 km

Cassini actually passed within 5,000 km of Rhea (a moon of Saturn) on the 30th and took a multitude of images. All the closest images are quite bright and it is unclear if the moon is just that bright, if there was an anomaly in the process or if some basic calibration has yet to occur. At any rate here are more distant images from the flyby and what happens if you register the various filtered images into one RGB (red, green, blue) file in Photoshop. The IR1 (infrered) is placed in the red channel, the GRN is placed in the green channel and the VIO (ultraviolet) is placed in the blue and you get what is truly false color, but not very far from what other natural color images have shown in the past. Rhea in IR1, GRN and VIO

Saturn (the solid color behind Rhea) seems a bit more green than expected… however, if the moon was starting to pass onto the side of the planet in darkness, it does tend to move toward green hues when in shadow.

Rhea from 5,000 km

Here is another one the further away images at 58,731 km in clear filter (B&W). You can see into one of the craters along the edge at the lower left side and peer across at the opposite side wall. It is similar to the close flyby images obtained of Dione and its deep canyon walls from last year.

And another clear filter from 61,602 km: