<Tr> <Th> Website </Th> <Td> www.eventhorizontelescope.org </Td> </Tr> <Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> The Event Horizon Telescope (EHT) is a project to create a large telescope array consisting of a global network of radio telescopes and combining data from several very - long - baseline interferometry (VLBI) stations around the Earth . The aim is to observe the immediate environment of the Milky Way's supermassive black hole Sagittarius A *, as well as the even larger black hole in Messier 87, with angular resolution comparable to the black hole's event horizon . </P> <P> The EHT is composed of many radio observatories or radio telescope facilities around the world to produce a high - sensitivity, high - angular - resolution telescope . Through the technique of very - long - baseline interferometry (VLBI), many independent radio antennae separated by hundreds or thousands of miles can be used in concert to create a "virtual" telescope with an effective diameter of the entire planet . The effort includes development and deployment of submillimeter dual polarization receivers, highly stable frequency standards to enable very - long - baseline interferometry at 230--450 GHz, higher - bandwidth VLBI backends and recorders, as well as commissioning of new submillimeter VLBI sites . </P>

What is the purpose of the event horizon telescope