Mercator – close to the heavens

While supervising the Master students at our telescope on La Palma last autumn, I completed the missing scenes for a new version of my Mercator time-lapse movie. Please set it to at least 720p, or go to YouTube and set it to 1080p and full screen, and enjoy! (I know this is not very recent news, but it would be a pity to not have this as a memory on the blog.)