Introduction

The National Radio Astronomy Observatory (NRAO) invites scientists to participate in the NRAO Semester 2015A Call for Proposals for the Green Bank Telescope (GBT), Very Large Array (VLA), and Very Long Baseline Array (VLBA), High Sensitivity Array (HSA), and Very Long Baseline Interferometry (VLBI).

The submission deadline for Semester 2015A proposals is Friday, 1 August 2014, at 17:00 EDT (21:00 UTC).

The NRAO especially wishes to highlight new opportunities for joint observations with the Hubble Space Telescope and the Swift Gamma-Ray Burst Mission. The NRAO also wishes to point out that, for the first time, the Large Millimeter Telescope is being offered for inclusion in the High Sensitivity Array (HSA) for 3mm Very Long Baseline Interferometry (VLBI).

Proposal Preparation and Assistance

Proposal preparation and submission are via the NRAO Proposal Submission Tool (PST) available at NRAO Interactive Services. Note that PST use requires registration.

Proposal Assistance

Proposers who need assistance with proposal preparation or have questions regarding the Call or NRAO telescope capabilities should contact Observatory staff via the NRAO Helpdesk.

Connect with NRAO

The National Radio Astronomy Observatory and Green Bank Observatory are facilities of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.

The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."

AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.