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ASD Inc FieldSpec 4 Hi-Res: High Resolution Spectroradiometer

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FieldSpec 4 Hi-Res: High Resolution Spectroradiometer

The FieldSpec® 4 Hi-Res is a high resolution spectroradiometer designed for faster, more precise spectral data measurements for a wide array of remote sensing applications. 
The 3 nm VNIR, 8 nm SWIR spectral resolution of the FieldSpec 4 Hi-Res spectroradiometer provides superior spectral performance across the full range solar irradiance spectrum (350 – 2500 nm). The enhanced spectral resolution in the SWIR range (1000 – 2500 nm) is particularly useful for detecting and identifying compounds with narrow spectral features in the longer wavelengths such as alteration mineralogy and gases for atmospheric analysis. 
 
Additionally 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, as well as ground truthing and building spectral libraries. 
 
Like all ASD FieldSpec spectroradiometers, the FieldSpec 4 Hi-Res can be used as a high resolution spectrometer for very accurate contact reflectance measurements.
FieldSpec 4 Hi-Res: High Resolution Spectroradiometer
Attributes
Additional Specifications Spectral Range 350-2500 nm 
Spectral Resolution 3 nm @ 700 nm 
8 nm @ 1400/2100 nm 
Spectral sampling (bandwidth) 1.4 nm @ 350-1000 nm 
1.1 nm @ 1001-2500 nm 
Scanning Time 100 milliseconds 
Stray light specification VNIR 0.02%, SWIR 1 & 2 0.01% 
Wavelength reproducibility 0.1 nm 
Wavelength accuracy 0.5 nm 
Maximum radiance VNIR 2X Solar, SWIR 10X Solar 
Channels 2151 
Detectors VNIR detector (350-1000 nm): 512 element silicon array 
SWIR 1 detector (1001-1800 nm): Graded Index InGaAs Photodiode, Two Stage TE Cooled 
SWIR 2 detector (1801-2500 nm): Graded Index InGaAs Photodiode, Two Stage TE Cooled 
Input 1.5 m fiber optic (25° field of view). Optional narrower field of view fiber optics available.

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