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General Observer Programs in Cycle 5

The 254 proposals listed below establish the program for JWST’s fifth year of science operations. Approximately 8,009 hours of prime time (including 3 Treasury, 9 Joint JWST-HST, and 1 Joint JWST-XMM programs), as well as 3 Survey, 13 Regular Archival, 8 Theory Archival, 3 Legacy Archival, 1 Pure Parallel, and 2 Calibration GO/AR programs — were awarded to observing programs in Cycle 5. STScI hosted the Cycle 5 Telescope Allocation Committee in February 2026. The Cycle 5 GO prime time is distributed as follows: 

Callout

The Cycle 5 GO Abstract Catalog is available as a PDF file to facilitate access to this information. NOTE:  The abstract information is reported as submitted, and may not be up-to-date.

End callout

  • 105 Very Small programs (≤ 20 hours) for 1,116 hours
  • 70 Small (> 20 and ≤ 50 hours) for 2,409 hours
  • 40 Medium (> 50 and ≤ 130 hours) for 3,054 hours
  • 10 Large (>130 hours) for 1,430 hours

To view details about a specific program, select a category below, then click the Program ID. 

NOTE: The listing of Co-PIs in the tables below has been limited to 4. Proposals with more than 4 Co-PIs are denoted with an asterisk. The full listing is available with the proposal.

Science Categories for GO Proposals

Abbreviations:

BOTS = Bright Object Time-series

FS = Fixed Slit

GTS = Grism Time Series

IFU = Integral Field Unit

LRS = Low Resolution Spectroscopy

MOS = Multi-object Spectroscopy

MRS = Medium Resolution Spectroscopy

SOSS = Single-object Slitless Spectroscopy

TSO = Time Series Observation

WFSS = Wide Field Slitless Spectroscopy

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The NASA James Webb Space Telescope, developed in partnership with ESA and CSA, is operated by AURA’s Space Telescope Science Institute.