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.

Italian ARC Node proposal preparation day

Published: 26 Feb 2025

In preparation for the ALMA Cycle 12 proposal deadline on 24th April 2025, the Italian node of the European ALMA Regional Centre (ARC) is organising a community meeting (in person and online) on Friday 4th April 2025. This meeting is to inform all potential users of new capabilities and the most important changes concerning the proposal preparation and the available tools.

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Allegro Cycle 12 proposal preparation support

Published: 26 Feb 2025

Allegro offers support for ALMA users preparing proposals for Cycle 12. Users can request support via e-mail (alma@strw.leidenuniv.nl) at any time. Turn around time for answers will be especially fast during the Allegro proposal-preparation office hours, from 15:00-17:00 on April 8, 10, 15, 17, 22 and 24; outside these hours, we aim to answer your questions within 1 working day.

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German ARC Node Community Day

Published: 26 Feb 2025

The next Call for Proposals for observing time with ALMA (Cycle 12) is anticipated to be issued on 20 March 2025, with a deadline on 25 April 2025. As a focal point during the proposal preparation period, the German ARC node cordially invites its community to gather for the German ALMA Community Day 2025 at the Argelander-Institut für Astronomie in Bonn on Friday, 4 April 2025.

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Nordic ARC Node proposal preparation days

Published: 26 Feb 2025

In preparation for the upcoming ALMA proposal deadline (April 24), the Nordic ARC node is preparing a few events to which the community is invited. On April 1 and 10, we meet at Chalmers University, Gothenburg (Sweden), for two in-person proposal preparation events. And for April 8-9 we are preparing and ALMA proposal preparation workshop at the University of Helsinki, Finland. Everyone is welcome to attend.

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Status update on "The ALMA 2030 Wideband Sensitivity Upgrade" at the upcoming EAS 2025 meeting

Published: 25 Feb 2025

Lunch session LS6 on "The ALMA 2030 Wideband Sensitivity Upgrade: status update" will take place on the 26th of June, during the European Astronomical Society (EAS) 2025 annual meeting in Cork (Ireland). 

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Quick Links

  • ALMA Web site: The main ALMA Web site maintained by the Joint ALMA Observatory.
  • ALMA Science Portal: The primary web interface between ALMA and the science community.
  • ALMA Helpdesk: Please use the Helpdesk to contact us for questions of any kind.