Diffuse Infrared Background Experiment

Diffuse Infrared Background Experiment
DIRBE instrument lightpath

Diffuse Infrared Background Experiment (DIRBE)[1] was an experiment on NASA's COBE mission,[1] to survey the diffuse infrared sky. The DIRBE instrument was an absolute radiometer with an off-axis folded-Gregorian reflecting telescope, with 19 cm diameter aperture.[1] The goal was to obtain brightness maps of the universe at ten frequency bands ranging from the near to far infrared (1.25 to 240 micrometer).[1] Also, linear polarization was measured at 1.25, 2.2, and 3.5 micrometers.[1] During the mission, the instrument could sample half the celestial sphere each day.[1]

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See also

References

Other infrared surveys

  • IRAS 1983
  • WISE 2010
  • WFIST 2020 (planned)

External links

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