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National Aeronautics and Space Administration

Goddard Space Flight Center

Astrophysics Science Division | Sciences and Exploration

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O rbiting W ide-angle L ight-collectors (OWL)

Mission Design

OWL home
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The OWL mission will:
  • Use the Earth's atmosphere as a vast calorimeter and observe nitrogen fluorescence light of giant air showers from ABOVE.
  • Determine arrival direction to better than 1°
  • Observe same shower development with two satellites : stereo OWL
  • Perform measurements of shower energy profile and determine depth of interaction in atmosphere, required for particle identification.
  • Monitor approximately 2 million km2 sr of atmosphere, with ~ 12% observing efficiency.

OWL home This file was last modified May 4, 2004