Science > Science Program

NRAO Science Program

NRAO observing proposal submission deadlines for the VLA, VLBA, and the GBT are 1 February and 1 August each year. The 1 February deadline applies to requests for observing time from 1 August–31 January; the 1 August deadline applies to requests for time from 1 February–31 July. If a proposal submission deadline date fall on a Saturday or Sunday, then the deadline is moved to the following Monday. 

The science programs for each semester are listed in the left column of this page. The Active Large Proposal page summarizes the active large proposals for the VLA, VLBA, and GBT. The Active Triggered Proposal page lists the active triggered VLA, VLBA, and GBT proposals, including their expiration date.