Array

Click the markers on the map below to learn more about each site in the Event Horizon Telescope array. Green icons mark current sites, purple icons mark future sites, and blue icons mark historic sites. Zoom in on Mauna Kea in Hawaii and Atacama Desert in Chile to see nearby sites in more detail.

EHT Array in 2017
SMT at night

Submillimeter Telescope (SMT),

part of the Arizona Radio Observatory (ARO)
APEX
Atacama Pathfinder EXperiment (APEX)
IRAM
IRAM 30-meter telescope
JCMT
James Clerk Maxwell Telescope (JCMT)
LMT in sunset
Large Millimeter Telescope "Alfonso Serrano" (LMT)
SMA
Submillimeter Array (SMA)
ALMA
Atacama Large Millimeter/Submillimeter Array (ALMA)
South Pole Telescope
South Pole Telescope (SPT)
Observatories Joining the EHT Array in 2018-2020
Greenland Telescope
Greenland Telescope
IRAM NOEMA Observatory
IRAM NOEMA Observatory
KittPeakAerial25-750x500

Kitt Peak 12-meter Telescope,

part of the Arizona Radio Observatory (ARO)
Historic Sites (Decomissioned Prior to 2017)
CARMA Array
Combined Array for Research in Millimeter-wave Astronomy (CARMA)
cso_small_0
Caltech Submillimeter Observatory (CSO)