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Instrument

FEGS
Fly's Eye GLM Simulator

The Fly’s Eye GLM Simulator (FEGS) is an airborne radiometer designed to calibrate and validate the Geostationary Lightning Mapper (GLM) on the GOES-16 satellite. It features a 5 x 5 array of radiometers that measure the optical radiance emitted by lightning at 777.4 nm. Additionally, it has five extra spectral channels at 337, 400, 500, 660, and 675 nm. FEGS offers a spatial resolution of 2 x 2 km and a temporal resolution of 10 μs.

Image of the FEGS instrument
NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Instrument Details

Spectrometer/Radiometer
Earth Science > Atmosphere > Atmospheric Electricity > Lightning
Troposphere
10 μs
2x2 km
386, 890, 750, 600, 455, 444, 300-750 THz
Currently unavailble

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