Joint James Webb Space Telescope (JWST)/NASA Keck Proposals

This opportunity does not affect NASA Keck proposal submissions for semester 2023A due September 15, 2022.

This is an advance notice that by agreement with NASA HQ, the NASA Exoplanet Science Institute (NExScI) and the Space Science Telescope Institute (STScI), the JWST Telescope Allocation Committee (TAC) will award NASA Keck time to highly ranked proposals that request observations from both JWST and NASA Keck. Proposers will submit a single proposal to STScI/JWST to request time on both observatories for JWST Cycle 2 and NASA Keck semesters 2023B and 2024A. This procedure is meant to avoid having to submit separate proposals to and be approved by both the JWST and Keck TACs.

This opportunity does not affect NASA Keck proposal submissions for semester 2023A, due September 15, 2022.

The only criterion above and beyond the usual review criteria is that both sets of data are required to meet the science goals. The proposed project does NOT need to require simultaneous JWST and Keck observations.

This joint program will start with the JWST Cycle 2 proposal solicitation which is expected to be released in November 2022 with proposals due in January 2023. No NASA Keck time awarded to a joint program will be scheduled prior to the start of the 2023B observing semester (August 1, 2023). Preliminary information on the joint program is given below. The JWST Cycle 2 proposal call will include complete details of the joint program.

  • Joint JWST/Keck proposals will be submitted to STScI
  • JWST Cycle 2 Call for Proposals will be released November 15, 2022
  • JWST Cycle 2 proposals will be due January 27, 2023
  • Up to 10-15 nights per year can be allocated by the JWST TAC, split between the 2023B and 2024A semesters.
  • Up to 2 partner Keck Target of Opportunity/cadence interrupts per semester can be awarded by the JWST TAC.
  • Multi-semester proposals of up to 2 semesters (1 JWST proposal cycle) will be permitted.
  • Keck data collected under this joint program are subject to same nominal period of exclusive use as the JWST data.
  • Keck observations approved through this joint program will be scheduled in a similar fashion to all other Keck programs. Keck observations lost to weather or instrument/telescope issues will not be rescheduled.
  • Requests for contemporaneous/simultaneous JWST/Keck observations will be considered but cannot be guaranteed.
  • NASA Keck time will only be awarded in conjunction with new JWST observations, not with Archival or Theory proposals.
  • Major results from these programs should be credited to both JWST and NASA/Keck.
  • Proposers to the JWST TAC will be required to submit a WMKO coversheet on which instrumentation information and lead observers will be designated. It is a WMKO requirement that first-time users of an instrument have at least one lead observer present at Keck for the initial observing run.
  • NExScI will perform a technical review of the Keck portion of the joint proposals approved by the JWST TAC and reserves the right to reject any approved observation determined to be infeasible, impossible to schedule, and/or dangerous to the telescopes or instruments. Any Keck observations that prove infeasible or impossible could jeopardize the overall science program and may cause revocation of the corresponding JWST time allocation. We, therefore, urge proposers to discuss technical concerns with appropriate staff at both observatories.
  • Proposers will be required to check if appropriate archival Keck data exist in the Keck Observatory Archive (KOA) and provide clear scientific and technical justification for any new Keck observations of previously observed targets.
  • Although teams may propose a similar or the same program to both the NASA/Keck and JWST TACs, STScI and NExScI personnel will examine approved programs to avoid duplication of proposals/programs in the use of NASA Keck time.

(last updated August 16th, 2022 12:49:35)