Time lapse of stay by two researchers at the Observatorio del Roque de los Muchachos (La Palma).A. Sánchez de Miguel and F. Ocaña)

You can see the nightfall, the Milky Way, the moonset, as domes move Willan telescopes Herschel Telescope (WHT), Grantecan NOT and TNG.

The images were taken during midnights granted as  Director Time at the WHT. 17,18 and May 19, 2013.