Whilst checking the latest images of the E-21 flyby returned by the Cassini probe, I've noticed that some of them show interesting optical phenomena that I'm not sure I can explain;
For example, on this one, there are two spotlight-like beams of light at the top part of the image, crossing each other just above the Enceladus' plume at the image center:
Cassini Solstice Mission image N00250060, taken on October 28, 2015 and pointing towards Enceladus (non-filtered)
My thinking is that the beam going from the top left towards image center is forward scattered light of Saturn shine through the E Ring, and the beam going from top right towards image center could be coherent backscatter amplified reflection of the Sun by Saturn's main rings, but the latter makes less sense to me as coherent backscatter should be visible when the spacecraft is directly between the Sun and the surface reflecting its light, so maybe there's some other type of light amplification going on there.
So, since I fail to explain it better and I doubt these beams are actual features of the E Ring as they don't appear in all subsequent images (e.g. they're not visible here), neither do I think these are lens flares or other image artifacts as they still appear on several other images (e.g. this one only shows one of them, but not the other), here's my question:
Could these optical effects be explained with the help of Cassini's position relative to Saturn and the Sun when images they appear on were taken? Or are they some other optical phenomena? Or are they actual tangible features, perhaps the E Ring tendrils?