ALMA Cycle 12 Call for Proposals
The ALMA Director, on behalf of the Joint ALMA Observatory (JAO) and the partner organizations in East Asia, Europe, and North America, is pleased to announce the ALMA Cycle 12 Call for Proposals (CfP) for scientific observations to be scheduled from October 2025 to September 2026. For this CfP, the JAO anticipates having 4300 hours of approved science time on each of the 12-m, 7-m, and the Total Power arrays. Together, the 7-m Array and Total Power Array form the Atacama Compact Array (ACA), also known as the Morita Array. Observations that are strongly encouraged include:
- ACA, especially in the LST range of 20h to 1h (note that ACA stand-alone proposals had, on average, a very high acceptance rate of 82% in Cycle 11)
- High frequency (Bands 8, 9, and 10) in any configuration
- Low frequency (Bands 1, 3, and 4) at long baselines (C-7 and C-8)
ALMA Cycle 12 proposal submission will open at
15:00 UTC on Thursday, 20 March 2025
The Cycle 12 proposal submission deadline is
15:00 UTC on Thursday, 24 April 2025
The key dates for the CfP in Cycle 12 are given in the following Table.
|
Date |
Milestone |
|
20 March 2025 (15:00 UTC) |
Release of Cycle 12 CfP, Observing Tool, and supporting documents, and opening of the Archive for proposal submission |
|
24 April 2025 (15:00 UTC) |
Proposal submission deadline for Cycle 12 proposals |
|
4 June 2025 (15:00 UTC) |
Deadline to submit reviews for the distributed peer review system |
|
August 2025 |
Announcement of the outcome of the proposal review process |
|
1 October 2025 |
Start of ALMA Cycle 12 science observations (anticipated) |
|
30 September 2026 |
End of ALMA Cycle 12 |
The ALMA Proposer’s Guide on the Science Portal contains all pertinent information regarding this ALMA CfP. A comprehensive description of the ALMA observatory and its components can be found in the ALMA Technical Handbook. Users should submit a Helpdesk ticket if they have any questions about ALMA or the Cycle 12 Call for Proposals.