I made this observation of Jupiter this morning. I observed the King for 45 minutes before making the sketch. When I began, it was still dark but by the time of the sketch it was major twilight. I used the filters while it was dark but found the view more pleasing in integrated light (IL) after twilight began.
The seeing was just good enough for me to use my 8mm BO/TMB Planetary eyepiece--it's a nice one. Since Jupiter was so low, I took out the diagonal and just looked straight through, hence the "classical" south up, preceding (west) to the left view.
The Great Red Spot (GRS) had just turned the corner when I began my observation around 0845 UT and it didn't take long to move into view. The GRS Hollow was outlined with a fairly dark oval, but the center of the spot was quite pale. I did not detect any festoons, although I suspected a couple--the dark barge is possibly the base of a festoon.
Europa was eclipsed by the Jovian shadow, but the other three Galilean moons were strung out on the preceding side with Io closest to Jupiter, following Ganymede and Callisto respectively. Mu Cap was to the north and in the FOV but Jupiter had moved noticeably to the east in the 24 hours since my previous look.
I'd like to dedicate this sketch to my mother-in-law, Rosalie Stennett, who passed away on May 20th at the age of 88 years. She always enjoyed looking at the heavens.