Skip to content

First Very Long Baseline Observations performed by ALMA


ALMA, the Atacama Large Millimeter/submillimeter Array, has successfully combined its immense collecting area and sensitivity with that of APEX (Atacama Pathfinder Experiment) to create a new, single instrument through a process known as Very Long Baseline Interferometry (VLBI).

Larger telescopes can make sharper observations, and interferometry allows multiple telescopes to act like a single telescope as large as the separation — or baseline — between them. In VLBI, data from two independent telescopes are combined to form a virtual telescope that spans the geographic distance between them — potentially up to the diameter of the Earth — yielding extraordinary magnifying power.

— Official Announcement

ALMA Performs Its First Very Long Baseline Observations



No comments avaliable.



Published in 12/04/2019

Updated in 19/02/2021

All events in the topic Scientific developments:

29/05/1919Eddington ExpeditionEddington Expedition
10/04/2019 • 10:00:00The first image of a black hole is presented to the publicThe first image of a black hole is presented to the public
05/04/2017The telescope first aims at M87 galaxy center
28/04/2017Katie Bouman's TED Talk
04/11/191525/11/1915Einstein submits his papers on the General Theory of RelativityEinstein submits his papers on the General Theory of Relativity
01/01/1781Discovery of the M87 galaxyDiscovery of the M87 galaxy
01/01/196501/01/1967First developments of very long baseline interferometry (VLBI)
01/01/2009Creation of the Event Horizon Telescope (EHT)
27/11/1783John Michell first imagined "black holes"John Michell first imagined "black holes"
22/12/1915Karl Schwarzschild solves Einstein's equationsKarl Schwarzschild solves Einstein's equations
01/01/1995Existence of black holes is confirmed
11/03/1968Shapiro time delayShapiro time delay
01/01/1978First successful mm-VLBI observations
01/01/19941.3 mm VLBI observations between IRAM telescopes
11/01/1995 • 18:35:00Tremendous Mass Concentration in Strange Galaxy Revealed by VLBATremendous Mass Concentration in Strange Galaxy Revealed by VLBA
01/01/2003VLBI observations at 147 GHz
04/05/2011Gravity Probe B confirms frame dragging
11/02/2016LIGO first detects gravitational wavesLIGO first detects gravitational waves
12/04/2019Katie Bouman's talk at Caltech