Call for Proposals - September 2019


We invite proposals for the use of the Arecibo 305-m telescope for the Thursday, March 5, 2020 (17:00 AST, 21:00 UTC), deadline. These requests should be for telescope usage within the six-month (or in some cases one-year) period beginning July 1, 2020.

Proposals should be prepared under the procedures detailed in our guidelines. Frequently Asked Questions (FAQ) on the0 policies and procedures can be found here. The FAQ will be updated as questions come in, so please check back.

We regret that, due to Congressional restrictions on the use of NASA funds, we are unable to host on-site observers working for institutions in China. Observers from China are welcome to apply for time as remote or in-absentia observers, but should meet the criteria for these observing modes.

After submitting their cover sheet, PIs of proposals with continuing status should upload their report to ASAC via the proposal system as if it were the body of the proposal.

Please email any questions about this call for proposals to Christiano Brum (

Submit your proposal

To begin the proposal submission process, please Submit your cover sheet information and Upload your proposal body (containing the scientific and technical justification) as established in the Proposal Policies and Guidelines. .

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The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.