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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 of lightning at 777.4 nm, along with five additional spectral channels at 337, 400, 500, 660, and 675 nm. FEGS provides 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 unavailable

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