🎉 Congratulations on ESO's Roofing Ceremony for the Extremely Large Telescope (ELT). This major milestone marks passing 60% construction progress.

#ESO #ExtremelyLargeTelescope #ELT #EuropeanSouthernObservatory #HARMONI #ELTinstruments #METIS
#MICADO #MORFEO #TeledyneSpaceImaging #Teledyne