As for the observation, I began with sucker holes in a light cloud layer but fairly steady seeing; around 2 am, however, almost at transit, I had clear sky and a good view--not rock solid, but with enough momentary calm to see a fair amount of detail. Banding was very nice, with an obvious wide light zone at the equator, a broad darker band through the tropical and temperate regions, and a very narrow light zone just north of this. The north polar region was exceptionally dark, and at some point I thought I spied a light zone running around it, but I have not drawn this--it was too fleeting. The Crepe ring was beautiful across the planet's face and into the ansae (I have not rendered its shape very well here); the Encke minima were visible in the A ring, and the usual darkening of the B ring near the ansae as well. Cassini shimmered in the seeing, but was clearly visible all the way around--at one point, I thought it looked lighter where it crossed the planet, but I don't know if current illumination makes that possible, and it was probably a bit of imagination. The shadow of the planet on the rings was noted--it always heightens the sense of 3-dimensionality--I confess I photoshopped this part of my drawing after scanning it, because I couldn't make it dark enough; likewise I photoshopped the bit of space interior to the crepe ring to get it dark enough. Of the moons I only noted Titan, Rhea, Dione and Tethys.
I was extremely happy to have tracking--something I've done without since selling my old 6-inch Intes mak 10 years ago--as seeing supported quite high power for occasional moments. I was also surprised by how nice the view was, given the planet's current location in Libra, and thus for me a maximum altitude of 39 degrees.
Observation was at 2 am PDT (9:00 UT) on 27.3.13. The scope is based on an f/5.9 mirror ground by Ed Beck and reputed to be refigured by Carl Zambuto; it sports a nice 2.1 inch secondary from Protostar. Eyepiece was a Pentax 3.5mm XW for 530X.