In this image the Great Red Spot (GRS) is visible in the lower left of the planet.
Taken on April 15, 2004 at the Astronomical Society of Harriburg's Naylor Observatory using a 12.5" f/6.5 Cave Newtonian telescope and a 2x barlow. The image is a stack of 125 frames taken with an ibot firewire webcam and stacked with Keith's Image Stacker.
Jupiter and Jupiter's Moon Io by Robert Altenburg In this image the Great Red Spot (GRS) is visible in the lower left of the planet. Taken on April 15, 2004 at the Astronomical Society of Harriburg's Naylor Observatory using a 12.5" f/6.5 Cave Newtonian