What kind of telescope was used to get pictures of the black hole?
Event Horizon Telescope
Data collected on hard drives must be transported by jet airliner (a so-called sneakernet) from the various telescopes to the MIT Haystack Observatory in Massachusetts, USA, and the Max Planck Institute for Radio Astronomy, Bonn, Germany, where the data are cross-correlated and analyzed on a grid computer made from about 800 CPUs all connected through a 40 Gbit/s network.[12]