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Information on Spectral Irradiance Data

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Information on Spectral Irradiance Data

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The radiometric data shown at the end of this section was measured in our Standards Laboratory. The wavelength calibrations are based on our spectral calibration lamps. Irradiance data from 250 to 2500 nm is based on an NIST traceable calibrated quartz tungsten halogen lamp. We validated the measurements using calibrated detectors. We used a calibrated deuterium lamp for wavelengths below ~300 nm. In both cases, we use interpolation to infer the irradiance of the calibrated lamp at other than the discrete NIST calibration wavelengths. We measured each of the lamps to be calibrated, in the most favorable orientation.

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