1990•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
T*: a calculation aid for radiometry
Frederick O. Bartell
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Abstract
The concept of T* is introduced as a special kind of average foreground temperature. It is shown that weighting for this average depends on the projected solid angle of different items as seen from the measurement target. It is shown that T* considerations are important for most radiometric measurement tasks. The relationships among radiometry, cavity radiation theory, and T* are shown.