Andreas Quirrenbach
University of Heidelberg

Optical/IR Interferometry from 2009 to 2029

Interferometry at visible and infrared wavelengths has become a productive
tool of stellar astrophysics. Initial observations of active galactic
nuclei have also been carried out. The next decade should see an
improvement of the current instruments and facilities, but their
fundamental limitations will remain. The science case for a sensitive
optical interferometer with kilometric baselines is strong; such a
facility could be realized as an international project in the time after
2020.