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


The National Radio Astronomy Observatory (NRAO) invites scientists to participate in the Semester 2024B 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 2024B proposals is Wednesday, 31 January 2024, at 17:00 EST (22:00 UTC).

For the VLA, the A-configuration will be available. It is anticipated there will be around 1715 hours on the VLA and 800 hours on the VLBA available for science observing. Opportunities for Joint proposals will be available for ALMA, JWST (see What’s New in 24B?), HST, Swift, Chandra, XMM-Newton, and NICER. Joint Proposals with ALMA or JWST 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-10 and VLA A, D, and C configurations.

The NRAO 2024B 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 24B Proposal Call is available here and summarized in the table below:

3 January 2024 NRAO/GBO Call for Proposals
31 January 2024 NRAO/GBO Proposal Deadline @ 17:00 EST
29 February 2024 Individual Science Reviews Completed
15 March 2024 Science Review Panel (SRP)  Meetings Completed
16-17 April 2024 Telescope time allocation committee (TAC) meeting
10 May 2024 Disposition Letters Sent