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.

News and updates on tools for Cycle 13

Published: 29 Oct 2026

With the successful start of Cycle 13, ALMA users will be able to benefit from features recently implemented or updated in various ALMA tools and interfaces. These include the web-based OT, SnooPI, the ALMA Pipeline, and the ALMA Science Archive. Click "Read More" to read a brief overview with links to more detailed documentation.

Communicating your science findings with the public

Published: 26 Oct 2026

Are you an author on an upcoming publication based on ALMA data that could be relevant to the wider public? If so, pitch your result to press@eso.org! You can read more about the types of stories we are after at: https://www.eso.org/public/news/pitch-your-research/. You can also check previously published releases for inspiration at https://www.eso.org/public/news/.

Since the process of evaluating, preparing and reviewing ESO press releases can be lengthy, please send your paper to us as soon as it has been submitted to a journal (no later than 4-6 weeks prior to expected publication). While only a few pitches are successful, the reward is high: if your science does make it into an ESO press release, blog post or picture of the week, it will reach a broad community of people around the world. 

ALMASPACE: designing the computational future of the European ALMA community in the WSU era

Published: 19 Oct 2026

The ALMASPACE (ALMA Science Platforms for Analysis and Calibration in Europe) development study officially kicked off in Gothernburg on 21 September 2026. Over the next two years, the study will investigate how the European ALMA Regional Centre (ARC) network can support its user community with the computing and storage resources needed to fully exploit the scientific potential of the ALMA Wideband Sensitivity Upgrade (WSU). 

By bringing together the expertise, infrastructure and user-support experience of the entire European ARC network, ALMASPACE aims to turn the Science Platform concept into a concrete and scalable pathway for the next generation of ALMA science.

Successful close of Cycle 12 and start of Cycle 13

Published: 15 Oct 2026

ALMA successfully started Cycle 13 observations during the Chilean afternoon of September 30th. That also marked the successful close of Cycle 12 with another record! During Cycle 12, ALMA successfully acquired and delivered more than 4700 hours of science-quality data (QA0 PASS) with the 12-m Array and set a new record on all three arrays (12-m, 7-m, and Total Power Arrays). This was achieved despite Cycle 12 having the most observing time lost due to weather in the past decade. Following the successes of Cycle 10 and Cycle 11, this achievement further demonstrates the maturity and efficiency of ALMA operations.

Development study on the next-generation ALMA vacuum windows by GARD kicks off

Published: 22 Sep 2026

A new ALMA development study, titled 'Next-Generation ALMA Vacuum Windows Sub-Wavelength Surface Structuring,' was officially kick-off at Chalmers university on 22 September 2026. The study is led by the Group of Advanced Receiver Development (GARD), Chalmers University, Gothenburg, Sweden in collaboration with the NOVA sub-mm group, in Groningen, the Netherlands.

Quick Links