Ocean Optics radiometer

The Ocean Optics radiometer is a portable spectrometer, used for direct solar irradiance measurements. Its detector is a silicon CCD array, coupled with a grating with 600 lines/mm and thus covering the wavelengths range 400 nm - 800 nm with resolution 1.5 nm (FWHM), with integration time going from 3 ms to 65 s. The spectrometer is even coupled with a light focusing system whose FOV is 1º which is a solution ensuring that diffuse solar radiation does not affect direct solar spectra. Since the equipment is manually operated, the measurements are certainly unaffected by visible clouds passage and are mainly analysed to characterize phisical and optical properties of the atmospheric aerosols.