But the highest resolution image we've ever constructed in astronomy doesn't come from the biggest telescope, but rather from an enormous array of modestly-sized telescopes: the Event Horizon Telescope. The Event Horizon Telescope is a single mirror with a lot of masking tape over portions of it. The Event Horizon Telescope is itself an array of many different individual telescopes and individual telescope arrays. Event Horizon Telescope CollaborationRight now, the Event Horizon Telescope is limited to Earth, limited to the dishes that are presently networked together, and limited by the particular wavelengths it can measure. By making these simultaneous observations all across the world, the Event Horizon Telescope really does behave as a single telescope.

Source: Forbes May 04, 2019 15:56 UTC