timelapse

This is something I've been meaning to do for a while: a daily record of the contrails (or lack of contrails) in the sky, in a known location, compared to a daily record of the atmospheric conditions in that location, specifically the relative humidity at typical aircraft cruising height. I'm...

This thread is for sharing your own time-lapse videos of the sky. Please don't post it unless it's a video you took yourself, or your have permission to share it. If possible, please give the time and place, and identify any aircraft. I'd like to build a collection that illustrates some of the...