Skip to main content

General Observers Programs

General Observers (GO) programs provide the worldwide astronomical community with opportunities to apply for observation time with JWST in a given cycle (generally 1 year in duration). GO proposals may be submitted for any amount of observing time, counted in hours, including all overheads. GO proposals are classified as Small (≤ 25 hours), Medium (> 25 and ≤ 75 hours), and Large (>75 hours). A variety of proposal types include:

  • Treasury
  • Calibration
  • Survey
  • Archival research 

Use the links below to view the approved GO proposals for each cycle: 


This site is protected by reCAPTCHA and the Google

Webb Space Telescope insignia


For technical assistance, please contact the JWST Help Desk.


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