Category: Proposal Calls

  • 25A Semester

    The Green Bank Observatory (GBO) Call for Proposals for the Semester 2024B closed on Wednesday, 31 January at 21:00 UTC. Please come back here in early July 2024 for the Semester 2025A Proposal Call.


  • 24B Semester

    24B Proposal Call The Green Bank Observatory (GBO) invites scientists to participate in the 2024B Semester Call for Proposals for the Green Bank Telescope (GBT). The submission deadline for Semester 2024B proposals was Wednesday, 31 January 2024, at 17:00 EST (22:00 UTC). The deadline is for the 24B semester observing period on the GBT: 1…


  • 24A Semester

    24A Proposal Call The Green Bank Observatory (GBO) invites scientists to participate in the 2024A Semester Call for Proposals for the Green Bank Telescope (GBT). The submission deadline for Semester 2024A proposals is Wednesday, 2 August 2023, at 17:00 EDT (21:00 UTC). The deadline is for the 24A semester observing period on the GBT: 1…


  • 23B Semester

    23B Proposal Call The Green Bank Observatory (GBO) invites scientists to participate in the 2023B Semester Call for Proposals for the Green Bank Telescope (GBT). The submission deadline for Semester 2023B proposals is Wednesday, 1 February 2023, at 17:00 EDT (22:00 UTC). The entire proposal call can be found on this page. We would like…


  • Special Proposal Call

    Special Proposal Call The Green Bank Observatory (GBO) invites Director’s Discretionary Time proposalsfor filler time observations on the Green Bank Telescope (GBT). Proposals must be submitted by January 20, 2023 at 22:00 UT. This request is for observing time at frequencies below 8 GHz.  Submissions for observations will be considered for scheduling in the 23-12…


  • 23A Semester

    23A Proposal Call The Green Bank Observatory (GBO) invites scientists to participate in the 2023A Semester Call for Proposals for the Green Bank Telescope (GBT). The submission deadline for Semester 2023A proposals is Monday, 1 August 2022, at 17:00 EDT (21:00 UTC). The entire proposal call can be found on this page. The GBO would…


  • 22B Semester

    22B Proposal Call The Green Bank Observatory (GBO) invites scientists to participate in the 2022B Semester Call for Proposals for the Green Bank Telescope (GBT). The submission deadline for Semester 2022B proposals is Tuesday, 1 February 2021, at 17:00 EST (22:00 UTC). The entire proposal call can be found on this page. The GBO would…


  • Special GBT Call for Large Proposals

    Proposal Call The Green Bank Observatory (GBO) invites submissions for large proposal observations on the Green Bank Telescope (GBT). Proposals must be submitted by December 13, 2021 at 22:00 UT. Proof of concept proposals, pilot programs and novel technique demonstration proposals that would support future large proposals will also be considered. We would like to…