Welcome to ALMA and the European ALMA Regional Centre!

ALMA (Atacama Large Millimeter/submillimeter Array) is the world's largest ground-based facility for observations in the millimeter/submillimeter regime located on the Chajnantor plateau, 5000 meters altitude in northern Chile. It enables transformational research into the physics of the cold Universe, probes the first stars and galaxies, and directly images the formation of planets. ALMA comprises a giant array of fifty 12-m antennas, which can be configured to achieve baselines up to 16 km. It is equipped with state-of-the-art receivers that cover all the atmospheric windows up to 1 THz. In addition, a compact array of 7-m and 12-m antennas greatly enhance ALMA's ability to image extended sources.

The European ALMA Regional Centre (ARC) provides the interface between the ALMA project and the European science community. It supports its users mainly in the areas of proposal preparation, observation preparation, data reduction, and data analysis.

Below you can read the latest Announcements from the European ARC Network.. More details and up-to-date information can be found in the News section and the ALMA Science Portal.

Amplitude calibration issue affecting some ALMA data

Published: 15 Jun 2021

A visibility amplitude calibration error that affects fields containing strong astronomical emission has been discovered in ALMA interferometer observations up to and including Cycle 7.

ALMA Cycle 7 Science Observations Status Update

Published: 31 May 2021

Over the past several weeks, ALMA has continued to conduct PI science observations on a best-effort basis while the recovery of the Arrays has been ongoing. The first set of antenna relocations was completed on May 10, 2021, moving the 12-m Array into the C43-6 configuration. In addition, PI science using eight antennas on the 7-m Array began on May 18, 2021. The plan is to go through all remaining configurations (C43-7 to C43-10) by the end of Cycle 7, although for a shorter duration than originally planned for each configuration.

Cycle 8 2021 Proposal Submission Statistics

Published: 28 May 2021

A detailed report of the Cycle 8 2021 Proposal Submission Statistics is now available. The report provides a summary of items such as the number of submitted proposals and time requested, subscription rates, and comparisons with the number of hours requested in previous Cycles.

I-TRAIN #7: Polarisation observations with ALMA

Published: 14 May 2021

The European ARC Network invites users to an online training on polarisation observations with ALMA. The session will be held on Thursday June 24, 2021, 11:00 CEST [Zoom link]. In this training session, participants will learn about ALMA’s polarisation capabilities and data products available in the archive. In particular, instructions on how to inspect the diagnostic information on data calibration and how to produce polarisation images will be given.

Vacancy Notice: ALMA Regional Centre Astronomer

Published: 22 Apr 2021

For its ALMA Regional Centre at the Headquarters in Garching near Munich, Germany, ESO is opening the position of:

ALMA Regional Centre Astronomer

The closing date for receipt of applications to be considered for the position is 10 May, 2021.  

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