The article [1] linked on ESO page mentions that "observations lasted for 75 min with 61 min spent on source". It also mentions only 47 antennas. [1] h

The article [1] linked on ESO page mentions that "observations lasted for 75 min with 61 min spent on source". It also mentions only 47 antennas. [1] https://arxiv.org/pdf/1706.06021.pdf https://arxiv.org/pdf/1706.06021.pdf