Analytical Spectral Devices FieldSpec
Overview
The Facility has three Analytical Spectral Devices (ASD) FieldSpec spectroradiometers available for loan – the FieldSpec Pro, the FieldSpec 3 High Resolution, and the FieldSpec 4. All models of the FieldSpec range are broadly similar in operation, and this page will provide a general overview of the instrument series with a focus on the FieldSpec 3 High Resolution model. Where differences exist between models, interactive footnotes are provided to give more context.
The FieldSpec 3 collects across the visible to the short wave infrared (350 nm –2500 nm) spectral range. Collection is conducted using a laptop, connected to the ASD FieldSpec 3 via a wired or wireless Ethernet connection1.
Designed to collect solar reflectance, radiance and irradiance measurements, these instruments are ideal for applications in mining, optical remote sensing, oceanography, forestry, plant physiology and geology.
This system can be used to collect data using a fibre-optic extension, to provide up to a total of 7 m distance from the ASD unit. This can be especially useful when samples are required from above without the need of a physical stand. Samples can be collected using a carbon-fibre boom, with a specifically adapted head mount to collect samples at nadir.
The FieldSpec 3 can also be used with a contact probe and a leaf clip, allowing the easy collection of small sample spectra. Additional accessories include a cosine diffuser for irradiance measurements, an illuminated turntable ideally suited for laboratory measurements of soils and fine grained material, and the RTS-3ZC integrating sphere for measurements of the reflectance and transmission spectra of small samples (such as leaves or soil samples enclosed within an optical cell).
Technical Specification
| Value | |
|---|---|
| Spectral range | 350 nm – 2500 nm |
| Sampling Interval | 1.4 nm between 350 nm – 1000 nm; 2.0 nm between 1000 nm – 2500 nm |
| Spectral Resolution | 3.0 nm at 700 nm; 10.0 nm at 1500 nm; 10.0 nm at 2100 nm2(12) |
| Scanning Time | Automatic with programmable options or manual control. Typical multi-scan acquisition time <10 seconds |
| Fore Optic Field of View | Barrel connectors on pistol grip limiting FoV to 1°, 5°, 8°, 10°, 18°, or 25° |
| Fore Optic Accessories | 1 m, 2 m, 3 m and 5 m fibre optic extensions; cosine diffuser for irradiance measurements; high intensity contact probe with leaf clip attachment; illuminated turntable; RTS-3ZC reflectance-transmittance integrating sphere |
| Power source | Interchangeable external nickel metal hydride (NiMH) cells; mains power adaptor |
| Weight | 5.6 kg |
| Size | 35.56 cm x 12.7 cm x 27.94 cm |
Example applications
- Loan reference 851.1120, “Sea ice albedo reduction owing to weathered crude oil from oil spills”
- Loan reference 875.0621, “Improving the Lunar Irradiance Model of ESA”
- Loan reference 854.1120, “Remote Sensing of Invasive Floating Weeds in the Great Lakes Region”
- Loan reference 904.0822, “Spectroscopic Properties of Simulated Exoplanet Surface Materials”
Units Available for Loan
| Model and Serial Number | Documents and Software |
|---|---|
| ASD FieldSpec Pro #6449 | Manual |
| ASD FieldSpec 3 High Resolution # 16178 | Manual |
| ASD FieldSpec 4 # 18454 | Manual |
| ASD High Intensity Contact Probe-1 | Manual |
| ASD High Intensity Contact Probe-2 | Manual |
| ASD High Intensity Contact Probe-3 | Manual |
| ASD Leaf Clip-1 | Manual |
| ASD Illuminated Turntable-1 | Manual |
| ASD RTS-3ZC Integrating Sphere | Manual |