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The 13th flight of the Space Shuttle (STS 41-G) carried the OSTA-3 (Office of Space and Terrestrial Applications) payload designed for conducting experiments in earth remote sensing. This experiment payload consisted of 1) a Shuttle Imaging Radar (SIR-B) for studies of the earth's surface, 2) a Large Format Camera (LFC) for cartographic mappings of the earth, 3) a Measurement of Air Pollution from Satellite (MAPS) experiment to determine the distribution of CO in the atmosphere, and 4) a Feature Identification and Location Experiment (FILE) for classification of surface materials. The SIR-B was an upgraded version of the SIR-A flown on the OSTA-1 payload during the STS-2 mission (NSSDC ID 81-111A-01). The MAPS and FILE sensors were the reflies of those same instruments on the OSTA-1 payload (NSSDC ID 81-111A-04 and 81-111A-03). The mission lasted 8 days and, except for SIR-B, all instruments met their prelaunch requirements.

Alternate Names

  • 15353
  • OSTA 3/STS 41G
  • STS 13
  • STS41G

Facts in Brief

Launch Date: 1984-10-05
Launch Vehicle: Shuttle
Launch Site: Cape Canaveral, United States
Mass: 10629 kg

Funding Agencies

  • NASA-Office of Space Science Applications (United States)
  • NASA-Office of Space Flight (United States)


  • Communications
  • Human Crew
  • Earth Science

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Mr. Louis J. DemasProgram ManagerNASA Headquarters
Dr. Mark SettleProgram ScientistNASA Headquarters
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