The Event Horizon Telescope Collaboration is a global effort to image, measure, and understand astrophysical black holes, by combining radio telescopes all around the world. So far, the collaboration has succeeded in zooming into the closest neighborhood of supermassive black holes in the centers of galaxies: M87 and our own Milky Way.


Event Horizon Telescope
A virtual telescope the size of the Earth
- Duration
- 2000
- Project type
- Research
In 2000, Radboud University professor Heino Falcke proposed to combine telescopes around the world to form a virtual telescope: the Event Horizon Telescope the size of the Earth using the imaging technique Very Long Baseline Interferometry (VLBI). This technique links millimetre telescopes all around the globe to act as an interferometer: a virtual mm-telescope.

The EHT Consortium is formed by world leading institutions, including:
- our Radboud University
- the Academia Sinica Institute of Astronomy and Astrophysics
- the University of Arizona
- the University of Chicago
- the East Asian Observatory
- Goethe University Frankfurt
- Smithsonian Astrophysical Observatory (part of the Center for Astrophysics)
- Institut de radioastronomie millimétrique (IRAM, itself a collaboration between the French CNRS, the German Max Planck Society, and the Spanish Instituto Geográfico Nacional),
- Large Millimeter Telescope Alfonso Serrano
- Max Planck Institute for Radio Astronomy
- MITHaystack Observatory
- National Astronomical Observatory of Japan
- Perimeter Institute for Theoretical Physics
The European part of the EHT is formed by the BlackholeCam project.