Science > Science Program

NRAO Science Program

NRAO observing proposal submission deadlines for the VLA, VLBA, and/or 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 the proposal submission deadline dates fall on a Saturday or Sunday, then the deadline is moved to the following Monday. Thus, the NRAO proposal submission deadlines in 2015 will be Monday, 2 February 2015 for Semester 2015B proposals; and Monday, 3 August 2015 for Semester 2016A proposals.

The science programs for each semester are listed on the left. 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.