Jupiter, Io and possible impact mark Gerhard Dangl Image taken: Jul. 20, 2009 Location: Nonndorf, Austria Details: I imaged Jupiter, moon Io and the possible impact mark with a video camera. To enhance the contrast I used an IR pass filter and a methane band filter. The mark is very faint on the images. WAT-120N, FL=2800mm, f11, stacked video ©2013, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.