Making VLTI go deeper

A joint ESO/CNRS/INAF announcement has been issued on an achievement I was part of : observing the faintest-ever object with a combination of long-baseline interferometry and spectroscopy. Indeed, We pointed the AMBER instrument at the quasar 3C273, which is the farest galaxy ever observed by long-baseline interferometry. It was already observed with interferometry, but here we used the spectroscopic [...]