ASD Inc.The SeaSpec spectroradiometer from Analytical Spectral Devices Inc. can be submerged to provide the radiance and irradiance measurements required by the bio-optics community. This dual-CCD instrument employs two spectrometers that provide a spectral range from 380 to 900 nm. Unlike bandpass radiometers that supply just a few spectral bands, SeaSpec's spectrometers provide continuous spectra, allowing the user to model information received from the sensor. 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