Observing > Call For Proposals > NRAO Call for Proposals: Semester 2024A


The National Radio Astronomy Observatory (NRAO) invites scientists to participate in the Semester 2024A Call for Proposals for the Karl G. Jansky Very Large Array (VLA) and the Very Long Baseline Array (VLBA), High Sensitivity Array (HSA), and Global mm VLBI Array (GMVA).

The submission deadline for Semester 2024A proposals is Wednesday, 2 August 2023, at 17:00 EDT (21:00 UTC).

For the VLA, the C and B-configurations will be available. It is anticipated there will be around 3200 hours on the VLA and 800 hours on the VLBA available for science observing. Opportunities for Joint proposals will be available for ALMA, HST, Swift, Chandra, XMM-Newton, and NICER (see What’s New in 24A?). Joint Proposals with ALMA need to be submitted to the facility requesting the larger amount of observing time.

The array configurations available for joint ALMA/VLA will be: ALMA C-1 to C-8 and VLA C and B configurations.

The NRAO 2024A Call for Proposals is for observations with the VLA and VLBA/HSA/GMVA; the corresponding call for the GBT can be found at the GBO Call for Proposals.  

A detailed timeline for the 24A Proposal Call is available here and summarized in the table below:

29 June 2023 NRAO/GBO Call for Proposals
2 August 2023 NRAO/GBO Proposal Deadline @ 17:00 EDT
31 August 2023 Individual Science Reviews Completed
15 September 2023 Science Review Panel (SRP)  Meetings Completed
16-17 October 2023 Telescope time allocation committee (TAC) meeting
7 November 2023 Disposition Letters Sent