The Roque de los Muchachos Observatory (La Palma)
Stack of 20 8-second exposures. Sky and landscape are stacked separately.
On the hill, the large dome to the right is the 10.4m GTC. The dome near the left edge is the 4.2m WHT. The one in the foreground with segmented mirrors is a 17m atmospheric Cherenkov telescope called MAGIC.