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  • FieldSpec 4 Hi-Res

    High resolution spectroradiometer

    FieldSpec ® 4 Hi-Res is a high resolution spectroradiometer designed for faster and more accurate spectral data measurements for a wide range of remote sensing applications.

    High resolution spectrometer for very accurate contact reflectance measurements

    The 3 nm VNIR, the 8 nm SWIR spectral resolution of the FieldSpec 4 Hi-Res spectroradiometer, provides superior spectral performance across the full range solar radiation spectrum (350-2500 nm). The improved spectral resolution in the SWIR range (1000 – 2500 nm) is particularly useful for detecting and identifying compounds with narrow spectral characteristics at longer wavelengths, such as alteration mineralogy and gases for atmospheric analysis.

    In addition, the 8 nm resolution meets or exceeds the spectral resolution of most hyperspectral sensors, making the FieldSpec 4 Hi-Res spectroradiometer an excellent choice for sensor validation and calibration, in addition to terrestrial exchange and construction of spectral libraries .

    Like all ASD FieldSpec spectroradiometers, FieldSpec 4 Hi-Res can be used as a high resolution spectrometer for very accurate contact reflectance measurements.

    Spectral scale 350-2500 nm
    Spectral Resolution 3 nm @ 700 nm
    8 nm @ 1400/2100 nm
    Sampling interval 1,4 nm @ 350-1000 nm
    1,1 nm @ 1001-2500 nm
    Scan time 100 milissegundos
    Specification of scattered light VNIR 0,02%, SWIR 1 e 2 0,01%
    Wavelength reproducibility 0,1 nm
    Wavelength accuracy 0,5 nm
    Maximum brightness VNIR 2X Solar, SWIR 10X Solar
    Channels 2151
    Detector  

    VNIR detector (350-1000 nm):

    SWIR 1 detector of 512 element silicon matrix (1001-1800 nm): Photographic Index

    Graduated InGaAs, Cooled Two-Stage TE SWIR 2 Detector (1801-2500 nm): Graded InGaAs Photodiode Index, Two Stage Cooled TE

    Input 1.5 m optical fiber (25 ° field of view). Optional more restricted field of view fiber available.
    Noise (NEdL) VNIR 1,0 X10 -9  W / cm 2 / nm / sr @ 700 nm
    SWIR 1 1,4 X10 -9   W / cm 2 / nm / sr @ 1400 nm
    SWIR 2 2,2 X10 -9   W / cm 2 / nm / sr @ 2100 nm
    weight 5,44 kg (12 lbs)
    
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