The Hyperspectral Thermal Emissions Spectrometer (HyTES) is an airborne imaging spectrometer that collects high spatial and spectral resolution measurements of brightness temperature, emissivity, and land surface temperatures. It operates with 256 spectral channels in the thermal infrared part of the electromagnetic spectrum, and it incorporates several technologies including a Dyson spectrometer. 

Data from HyTES are useful for a number of applications, including high-resolution surface temperature and emissivity measurements, detection of trace gases such as methane, and volcano observations. 

Since its first flights in July 2012, HyTES has been deployed on NASA’s Twin Otter, ER-2, and GulfStream V aircraft.