NASA's James Webb Space Telescope

JWST Guaranteed Time Observations (GTO) Program Details Released

News Feature June 14, 2017

Artist's conception of the James Webb Space Telescope

The Guaranteed Time Observations (GTO) program for the James Webb Space Telescope (JWST) is designed to reward scientists who helped develop the key hardware and software components or technical and inter-disciplinary knowledge for JWST. The observing time over the first three cycles will be allocated to these scientists, who include the:

  • Principal Investigators of the four science instruments (MIRI, NIRCam, NIRISS, and NIRSpec)
  • U.S. MIRI Science Lead and Science Team members
  • Six Interdisciplinary Scientists (IDS)
  • Telescope Scientist

Each GTO team submitted a description of the proposed Cycle 1 science program, with specific targets and observations. The proposals have been reviewed for duplication and adherence to allocations specified by NASA. The programs are organized by science topic, as follows:

  • Observations of Solar System Objects
  • Extra-solar Planets
  • Brown Dwarfs
  • Protostars, Protostellar Disks, and Young Stellar Objects
  • Debris Disks and Photodissociation Regions
  • Star Clusters, Star Formation Regions, Planetary Nebulae, and Galactic Transients
  • Targeted Galaxies
  • Clusters of Galaxies
  • High-redshift Quasars and Galaxy Assembly
  • Deep Fields

You can review the program information and observation specifications on JWST User Documentation site.