NIR Spectrometer Features 
- NIR Measurements in the 900-1700nm range
- Spectral resolution down to 1nm for certain models
- Miniature size 5x3x2″ with rugged, compact design
- Integrated thermo electric cooler set to operate at -15 deg C
- Complete Software Development and Integrated Chemometrics options
- For NIR portable and OEM applications
The StellarNet DWARF-Star NIR spectrometers are fiber optically coupled instruments with a wide selection of models for measurements in the 900-1700nm wavelength range achieving resolving resolutions down to 1.25nm.
High performance InGaAs detectors from Sensors Unlimited are installed in each DWARF-Star with options for 512 or 1024 linear pixels. Each pixel is 25μm by 500μm tall to provide maximum sensitivity. The detector has an integrated thermo electric cooler (TEC) maintained at –15 degrees, stabilized within +/-0.1 °C (optional 2-stage cooling is available).
Various models provide a choice of grating range and slit resolutions. New and improved electronics with a high speed 16-bit digitizer allows for fast data acquisition and a signal to noise of 4000:1! Includes 10x electronic gain mode.
Ruggedized– The detachable spectrograph assembly and control electronics are protected inside a rugged metal enclosure, suitable for portable, process, lab, and field applications.
Multi-unit connection can be daisy chained together and are able to run simultaneously.
USB powered directly from your PC’s USB port. DWARF-Star spectrometers come with integrated TE coolers which can be activated with 5VDC power adapter included with each system; however, many applications can be ran without cooling.
Onboard Memory with pre-set calibrations and spectrometer settings and snap shot memory to provide instantaneous spectral image.
High Speed Electronic Interface can be attached directly to a computers USB port for data transfer or zAP2 upgrade for wifi control.
Many Options & Upgrades– The DWARF-Star spectrometer platform supports a variety of options and upgrades such as TTL triggering options, zAP 1 & 2 electronics upgrades for increased dynamic range, burst acquisition, and onboard CPU with Wifi communication. See more information below under DWARF-Star options. ContactUs@StellarNet.us for more info.
StellarNet also offers light sources, probes, and sampling accessories to facilitate virtually any NIR application. The miniature DWARF-Star NIR spectrometer is ideal for process analytical technology for industries such as food and drug, chemical, oil and gas, and plastics. The DWARF-Star’s miniature size, low cost, and rugged design also make it ideal for the field, enabling on-site product analysis and quality control never before attainable.
| DWARF-star Models |
Number of Elements | Spectrometer Range (nm) | Grating (g/mm) | Grating Range (nm) | Dispersion (nm/pixel) | Estimated Resolving Resolution |
NIR |
512 | 900-1700 | 250 | 800nm | 1.25 | 2.50nm |
| NIRb |
512 | 1000-1700 | 300 | 650nm | 1.00 | 2.00nm |
| NIR2 |
512 | 1250-1575 | 600 | 325nm | 0.50 | 1.00nm |
| NIR2b |
512 | 1150-1475 | 600 | 325nm | 0.50 | 1.00nm |
| NIR |
1024 | 1000-1700 | 600 | 700nm | 0.62 | 1.25nm |
Tungsten Halogen Lamp spectrum
| Specifications DWARF-Star NIR Spectrometer $15,500 OEM Pricing available | |
| Dynamic range: 4000:1 with 5 decades | Dimensions: 5x3x2″ |
| Resolving resolution: 2.5nm with 25μm slit | Power consumption: 1.5 Amps @ 5 VDC |
| InGaAs Detector: 512 or 1024 pixels | Interface: USB-2 or Wifi2, RS2323, SPI3, 4-20mA3 , Digital I/O3 or ethernet3 |
| Detector range: 900-1700nm | Data transfer speed: 30Hz or 1000Hz1 |
| Pixel size: 25um x 500um | Detector Integration: 1 ms to 8 minutes |
| Pixel well depth: 130 x108 electrons | Slit size options: 25μm |
| Selectable well control: 130 x108 or 5 x106 el. | Operating systems: Windows and Linux2, Andriod2, iOS |
| Signal to noise: 4000:1 with TEC cooling | Software included: SpectraWiz Program, StellarPro, WinSDK (C,C#,VB, Delphi), Customizable LabVIEW, VBA for Excel (CRI & LED Report) |
| Digitizer: 16-bit | |
1 zAP1 Electronics Upgrade 2 zAP2 Wifi + Applications Processor Upgrade with SpectraWiz Mobile Software3 SMART-Control Interface
DWARF-Star Sample Spectra
DWARF-Star NIR Spectrometer
SpectraWiz Software displaying a time series increase of NIR water absoprtion bands.
Spectrum from DWARF-Star-512 showing 2nd Derivative spectral reflectance of type-2 plastics
SpectraWiz software interface displaying raw NIR reflectance spectra of dietary supplement powders with inset multivariate calibration model
NIR spectra of Milk Powders
JACK 1-In Trigger
TTL input trigger to enable spectrometer scan $175
zAP1 Electronics Upgrade
zAutomation Processor 1 upgrade provides auto and user controllable spectral baseline and gain for maximized dynamic range and burst mode for high speed consecutive spectral capture. $350 (available currently on new spectrometers)
zAP2 WiFi Upgrade
The zAP2 WiFi upgrade enables WiFi access to any spectrometer. Now use our new StellarRAD App on your iPhone or Android device to make real-time spectral measurements quick and easy. The zAP2 WiFi upgrade can be added to all new and some old spectrometers in the field. Once added, the spectrometer runs as normal receiving power from the computer’s USB. When you connect your zAP2 5VDC power plug, the WiFi initializes and you can connect your device. Also, the zAP2 enables USB over IP and you can run SpectraWiz wirelessly on your Windows computer. $550
Detector TEC Upgrades
Standard DWARF-Star models come with integrated 1-stage TE cooler for -15 degree cooling from ambient. 2-stage deep cooled options down to -30 degrees are also available.
The powerful SpectraWiz® spectrometer software is provided free of charge with every spectrometer instrument. This includes drivers and customizable software for Windows. The SpectraWiz software is considered the “Swiss Army Knife of Spectroscopy” and may be used to accurately measure wavelength emissions, reflectance, transmission, absorption, concentrations, and absolute intensities. In addition to real-time spectroscopy, SpectraWiz® has built-in applications for SpectroRadiometry, SpectroColorimetry, ChemWiz chemistry lab concentration analyzer, and UV level monitors. Download SpectraWiz Software FREE
StellarRAD for iPhone and Andriod – Light Spectral Analysis App
The StellarRAD App for all WiFi-enabled StellarNet spectrometers (zAP2 WiFi upgrade) makes real-time light measurement quick and easy. Acquire full spectrum analysis of LEDs, lamps, lasers, solar or grow lights, and just about any type of luminaire from ultra-violet through the visible and near-infrared!
This intuitive app lets users control their spectrometer and capture basic and more advanced light measurement parameters such as spectral irradiance and lumens. Colorimetric analysis such as CRI (color rendering index), CCT (correlated color temperature), xy chromaticity, and much more are included. Easily save and export your data and full spectral graph as an .IRR text data file, screenshot, and/or PDF report with all parameters listed.
SpectraWiz MobileTM for Linux/RasPi
The SpectraWiz MobileTM for Linux/RasPi is designed to run directly on the SMART-Control spectrometer interfaces or can be packaged for your your requirements. Using the local access point or WiFi you can easily log in and run applications for General Spectroscopy, Radiometry, Colorimetry, and Concentration analysis.
The easy to use applications are written in python and provided free with purchase of a SMART-Control spectrometer upgrade. Source codes can be purchased separately and can be further customized to suite each user’s requirements. OEM customers can add their logos or additional computations and industrial customers can set their spectrometer and stream their data to PLCs or other process monitoring platforms. SMART-Control devices support RS232, 4-20mA Analog, 26 pin digital I/O, Ethernet, I2C and other options available upon request.
Standard Interface
The system includes a high speed plug & play interface using USB-2 connection.
zAP2 WiFi Upgrade
The zAP2 WiFi upgrade enables WiFi access to any spectrometer. Now use our new StellarRAD App on your iPhone or Android device to make real-time spectral measurements quick and easy. The zAP2 WiFi upgrade can be added to all new and some old spectrometers in the field. Once added, the spectrometer runs as normal receiving power from the computer’s USB. When you connect your zAP2 5VDC power plug, the WiFi initializes and you can connect your device. Also, the zAP2 enables USB over IP and you can run SpectraWiz wirelessly on your Windows computer. $550
SMART-Control Interface Upgrade
The SMART-Control device offers communication flexibility and application specific customization for any StellarNet spectrometer. This add-on interface includes an integrated CPU with 1GB RAM and many communication protocols such as RS232, SPI, 4-20mA Analog for PLCs, Digital I/O, Ethernet, Wifi and many other options. The SMART-Control allows customers to move their spectrometers into process or OEM environments and stream their selected real world data. $1500
Technical Information Request
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