CRIRES - the CRyogenic high-resolution InfraRed Echelle Spectrograph mounted on Unit Telescope 1 (UT1, Antu) of the VLT.

More information and download options:
eso.org/public/videos/uhd_vlt6_2014/

Credit:
ESO

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…