Jupiter showing its "Great Red Spot". The persistent anticyclonic storm that is responsible has been seen from the time that telescopes were capable of spotting it.
Details
2012-10-09 at 11:16 AM PST from Victoria BC
Conditions - clear, slightly overcast and calm, 2 deg C with no wind.
Equipment - Canon T3i on f10 C14" SCT with Paramount support.
Exposure - used 794 of 1588 frames taken at 1/320s and ISO 800.
Processing in Images Plus v5.0 with some enhancements in Photoshop.