Low- and Mid-Temperature Precision Blackbody Models for Radiometry and Radiation Thermometry

Low- and mid-temperature blackbody models with operating temperatures in the range 80–1200 K are considered. These types of models function as components of verification systems for preflight calibrations of onboard optical radiometric space equipment operating in the infrared range of wavelengths. Radiation sources with tunable temperature and models based on fixed reference temperature points of the melting–solidification phase transitions of Ga and In are described.