
ESO’s New Technology Telescope (NTT) can be seen on an adjoining peak, easily visible as the next-largest family member. Home to the High Accuracy Radial velocity Planet Searcher (HARPS) instrument, the 3.6-metre telescope is the world’s foremost ground-based planet hunter. Looming over its relatives, ESO’s 3.6-metre telescope gleams on the far left of the image. ĩ October 2017: This family portrait was captured by veteran ESO Photo Ambassador Alexandru Tudorică, and shows all of the telescopes residing at ESO’s La Silla Observatory in Chile. Visitors could also test some of the interactive demonstrations which will be on display in the exhibition of the ESO Supernova. The programme included live experiments (like the comet-making experiment here), guided tours, an exhibition on the ESO observatories, talks from ESO scientists, and a live connection to the ESO observatories in Chile. In total, a record-breaking 5600 people seized the opportunity to have their questions answered by experienced astronomers and to see what’s going on at an organisation at the forefront of astronomical research.

Before the doors had even opened at 11:00, people were waiting outside, eager to experience all the different activities available. In conjunction with other facilities based on the science campus in Garching, ESO invited visitors to experience first-hand its work as the world’s leading ground-based astronomy organisation. 23 October 2017: On Saturday 21 October, ESO Headquarters in Garching, Germany, opened its doors for the yearly Open House Day.
