In early October Jupiter shines at magnitude ~-2.8 in the eastern sky, just after sunset and is visible all night. Just as nothing beats aperture for fine telescopic views, nothing beats being close to an object for naked eye views. The Voyager I probe was just around 1,149,000 miles from Jupiter when it took this photo of the Great Red Spot on March 4, 1979. That's 320 times closer than the earth was this past September.
This photo is a mosaic compiled and processed by Björn Jónsson.
The Great Red Spot of Jupiter. Photo by the Voyager spacecraft. Processing by Bjorn Jonsson. The Great Red Spot is a giant anti-cyclonic storm (high pressure area rotating counter-clockwise), akin to a hurricane on earth. It is so large that 3 earths could fit within its boundaries and has persisted over 400 years.