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.

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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

KPNO aerial view

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 Telescope Caltech Submillimeter Observatory (CSO)