The telescope has now started observations and ESO is solely responsible for managing its operations and maintenance .
ESO and VSTceN collaborated in the commission phase , while ESO was responsible for the civil engineering works and the dome on site .
The telescope has now started observations and ESO is solely responsible for managing ESO 's operations and maintenance .
ESO and VSTceN collaborated in the commission phase , while ESO was responsible for the civil engineering works and the dome on site .