This is an observation of the King I made under good seeing conditions (7-8/10 Pickering/Antoniadi II). The CSC had predicted excellent conditions after local midnight and Attila Danko and Co. were pretty close.
The eyepiece view was so sharp at 261x that I bumped it up to 340x. While that view was almost as good, the contrast and colors suffered so I went back to 261x for the bulk of the observation. I never bothered with any filters this time.
At the beginning of the session, Oval BA was approaching the preceding limb but still quite visble as a small. pale, undefined splotch. By the time I was ready to sketch, the oval was so close to the limb that I could only discern a hint of it.
The view of the Great Red Spot (GRS) was striking in that it was completely encircled by a bright border. The turbulent wake following the GRS appeared to be about as large as the great storm itself.
Colors were in evidence, perhaps because of the good conditions. I don't usually see much color, although the large aperture of my Cat has helped me considerably. The GRS and Oval BA were both a pale salmon color and the big festoon on the southern edge of the North Equatorial Belt was a much darker blue than what I am used to seeing. The South Tropical Zone has appeared yellowish for several observations now.
Ganymede and Io were escorting the King on the preceding side with Callisto following and Europa behind the scene.
I used a 2B and 4B pencil for the sketch. The template was larger than what I normally use and some detail was lost in compression.
Sure is nice to have good seeing once in a while.