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25B-26A Filler Time
Special Call for GBT 25B-26A Filler Time Proposals The Green Bank Observatory (GBO) invites the scientific community to submit Special Call proposals for filler-time observations on the Green Bank Telescope (GBT) during the 25B and 26A semesters. Approved projects will be conducted through July 31, 2026. Submission Deadline:Friday, November 28, 2025, at 22:00 UTC (17:00 Eastern Time)
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Change in balance command
We have released a change in the behavior of the Balance() command on the GBT.
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MUSTANG2 MaDCoWS Data
The Massive and Distant Clusters of WISE Survey (MaDCoWS) is a catalog of >2000 massive galaxy clusters at z~1. The goal of this GBT observing program was to observe many of the most massive MaDCoWS clusters with MUSTANG2 in order to obtain a Sunyeav-Zeldovich Effect mass estimate. 26 MaDCoWS clusters were observed and the resulting…
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26A Semester
The National Radio Astronomy Observatory/Green Bank Observatory (NRAO/GBO) Call for Proposals for the Semester 2026A closed on Wednesday, 30 July at 22:00 UTC (5:00 P.M. ET). The Semester 2026A Proposal Call information can be viewed here.
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BARFLYS Data
Bar Ammonia Radiation in Filaments, Lanes, and YSOs Survey (BARFLYS) targets the NH3 (1,1) and (2,2) transitions across the entire Milky Way Galactic Bar Dust Lanes to identify regions of dense gas and examine their properties. Acknowledgement For publications that make use of these data please cite Butterfield et al. (2025). Please also acknowledge the…
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25B Semester
The Green Bank Observatory (GBO) Call for Proposals for the Semester 2025A closed on Wednesday, 31 July at 21:00 UTC. Please come back here in early January 2025 for the Semester 2025B Proposal Call information. The National Radio Astronomy Observatory/Green Bank Observatory (NRAO/GBO) Call for Proposals for the Semester 2025B will close on Wednesday, 29…
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GOTHAM Data
GOTHAM is a broadband spectral line survey of the cold core Taurus Molecular Cloud-1 (TMC-1) Cyanopolyyne Peak with the Green Bank Telescope. Its primary goal is to investigate the chemical conditions of this region, characterized by dark cloud chemistry rich in unsaturated long-carbon-chain and aromatic molecules. Acknowledgement For publications that make use of these data…
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GBT at Full azimuth Slew Rate
The GBT has returned to the regular full azimuth slew rate.