European ARC Announcements

European ARC Announcements are provided by ESO and the European ALMA Nodes that together make up the European ALMA Regional Centre Network.

ALMA at 10 years: Past, Present, and Future

Published: 25 Sep 2022

To commemorate its first decade of science operations, the ALMA partnership is organizing a conference that will take a look back at the observatory accomplishments, highlight its latest results and look forward to future technical developments. The conference will be held in Puerto Varas, Chile on 4-8 December 2023. More information will be posted on the conference web page as it becomes available. Registration for the conference will open in early 2023.

New way to request raw data

Published: 09 Sep 2022

From the start of Cycle 9, PIs and Data Delegees will be able to request the release of raw data via a convenient new interface, rather than via the Helpdesk. Note that this has no effect on the policies applying to raw data release, especially regarding the start of the proprietary period with the release of the first QA0 PASS or SEMI-PASS observation. The new interface can be accessed via the Data tab on the ALMA Science Portal, or directly at

Results of the ACA Standalone Cycle 8 2021 Supplemental Call

Published: 07 Sep 2022

A detailed report on the results of the ACA Standalone Cycle 8 2021 Supplemental Call is now available. The report details the proposal statistics and regional distributions, as well as the proposal distribution across science categories and receiver bands.

The report can be downloaded as a pdf document.

ACA Observatory Filler Programs page now available in the Science Portal

Published: 05 Aug 2022

The ALMA Science Portal now has a dedicated page for the Atacama Compact Array (ACA) Observatory Filler Programs conducted in Cycles 5 and 6 at Nine filler programs were executed to fill specific gaps in the ACA observing schedule. The data were released through the ALMA Science Archive with no proprietary period. The programs have resulted in publication of multiple papers. We hope that ALMA users will continue to utilize those data (and all data in the Archive!) for their scientific research.

Issue affecting ALMA polarization and VLBI data taken in Cycle 8

Published: 08 Jul 2022

An issue has been identified in ALMA data taken since the start of Cycle 8 (1 October 2021). The orientation angle of the linearly polarized receiver elements is recorded incorrectly in the raw data (ASDMs). Full polarization and VLBI data are critically impacted. These data are currently being reprocessed and, when necessary, re-delivered under the observatory's QA3 policy. Any data taken in Cycle 8 other than polarization or VLBI data are not impacted, but they will still have their ASDMs updated in the archive for consistency purposes, but without reprocessing. For the remainder of Cycle 8, all data will be fixed before processing and ingestion. The issue has already been corrected in the Cycle 9 data acquisition software.

Come and visit the ARC Stand at EAS 2022!

Published: 27 Jun 2022

During the ongoing EAS 2022 meeting in Valencia, the European ARC Network will have a stand manned by staff from the ESO ARC and different ARC Nodes.

  • Come visit the stand to chat with other ALMA users from the nodes, to learn how the ARC Network can support your science, and to get some memorabilia.
  • Participate in the daily ALMA quiz for the opportunity to win a Lego ALMA antenna.
  • Join us on Friday 1 July in Lunch Session 6 to hear about an ALMA status update, archive developments and science support opportunities provided by the European ARC network.

The ALMA Configuration Schedule for Cycles 9, 10 and 11

Published: 16 Jun 2022

A preview of the Cycles 9, 10 and 11 ALMA Configuration Schedule is now available at the following link. This schedule is being released to allow ALMA users to plan their proposal strategy for the next three Cycles.

Cycle 9 Proposal Submission Statistics

Published: 03 Jun 2022

A detailed report of the Cycle 9 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. The report can be downloaded as a pdf document.

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