Wisconsin High Altitude Ballooning -- 81,000ft - 93,000ft: Sunset over Wisconsin

Flight of a balloon attached to a payload containing two cameras (one still, one video) and a phone with GPS tracking capabilities. The balloon was launched from Delafield, WI on 10/9/11 at 4:45 pm and was recovered about 3 hours later at a farm about 20 miles north. This video was taken with the onboard video camera and recovered following the flight. The ascent rate was about 800ft/min, so this should correspond to about 12,000ft of ascent. We calculate that the balloon is likely between 81,000ft an