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NIR Spectrometers for Portable & OEM Applications

StellarNet’s newest NIR spectrometer, the DWARF-Star, is small, robust, and equipped with high performance InGaAs detector array for the 900-1700nm wavelength range and achieves resolving resolutions to 1.25nm. The DWARF-Star features no moving parts and is packaged in a small rugged metal enclosure (5”x3”x2”) for portable, process, and OEM applications.Advancements in electronic and optical design have a lowed for size reduction never before achieved in a NIR spectrometer.
The InGaAs detector is a Sensors Unlimited linear photo diode array with 512 pixels (1024 optional) 25μm by 500μm tall to provide maximum sensitivity. The detector has an integrated thermo electric cooler (TEC) maintained at –10 °C, stabilized within +/-0.1 °C. The NIR spectrometers accept a single strand SMA-905 terminated, low OH, fiber optic cable as input. Several models provide a variety of operational ranges and resolutions suitable for both spectroscopy and optical spectrum analysis. Each DWARF-Star includes free SpectraWiz® Software and a developer’s toolbox of source codes, customizable demo programs, and full spectroscopy applications in LabVIEW, Visual Basic, DelphiPascal, and MS Visual C. High speed spectral data acquisition with advanced features, such as time series analysis and episodic data capture with rapid sample logging are standard features. Post processing techniques such as baseline correction, data smoothing, and spectral derivatives are included. Additionally, add-on chemometrics packages are available for complete multivariate calibration, analysis, and runtime with the DWARF-Star.
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DWARF-star-NIR-512

Wavelength Range (nm) : 900-1700

  •  Number of Elements  512
     Spectrometer Range (nm)  900-1700
     Grating (g/mm)
     250
     Grating Range (nm)  800nm
     Dispersion (nm/pixel)
     1.25
     Estimated Resolving Resolution  2.50nm

     

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DWARF-star-NIRb

Wavelength Range (nm) : 1000-1700

  •  Number of Elements  512
     Spectrometer Range (nm)  1000-1700
     Grating (g/mm)
     300
     Grating Range (nm)  650nm
     Dispersion (nm/pixel)
     1.00
     Estimated Resolving Resolution  2.00nm

     

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DWARF-star-NIR2

Wavelength Range (nm) : 1250-1575

  •  Number of Elements  512
     Spectrometer Range (nm)  1250-1575
     Grating (g/mm)
     600
     Grating Range (nm)  325nm
     Dispersion (nm/pixel)
     0.50
     Estimated Resolving Resolution  1.00nm

     

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DWARF-star-NIR2b

Wavelength Range (nm) : 1150-1475

  •  Number of Elements  512
     Spectrometer Range (nm)  1150-1475
     Grating (g/mm)
     600
     Grating Range (nm)  325nm
     Dispersion (nm/pixel)
     0.50
     Estimated Resolving Resolution  1.00nm

     

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DWARF-star-NIR-1024

Wavelength Range (nm) : 1000-1700

  •  Number of Elements  1024
     Spectrometer Range (nm)  1000-1700
     Grating (g/mm)
     600
     Grating Range (nm)  700nm
     Dispersion (nm/pixel)
     0.62
     Estimated Resolving Resolution  1.25nm

     

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 Dynamic range  4000:1 wi0th 5 decades
 Dimensions  5”x3”x2”
 Resolving resolution
 2.5nm with 25μm slit
 TEC Power  1.5 Amps @ 5 VDC
 InGaAs PDA Detector
 512 or 1024 pixels
 Interface  USB-2
 Detector range
 900-1700nm
 Data transfer speed  40x faster than USB-1
 Pixel size  25um x 500um
 Detector Integration
 1 millisecond to 30 secs
 Pixel well depth  130 x108 electrons
 Slit size (um)
 25um
 Selectable well control  130 x108 or 5 x106 el.
 Operating systems
 XP/Vista/ Win 7
 Signal to noise  4000:1 with TEC cooling
 Digitizer  16 bit @ 2.5 MHz rate