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ASD FieldSpec3 High Res

Features

The Facility has three Analytical Spectral Devices (ASD) FieldSpec Pro spectroradiometers available for loan. This page details the facialities FieldSpec3. Like the FieldSpec Pro, this spectrometer collects bewteen 350-2500nm spectral range. It has several advantages over its older sister, as it is lighter, and more portable. Collection is done useing a laptop, connected to the ASD FieldSpec3 via a wired or wireless Ethernet connection.

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 7m distance from the ASD unit. This can be especially useful when samples are required from above without the neeed of a physical stand. Samples can be collected using a carbon-fibre boom, with an specifically adapted head mount to collect samples at nadir. The ASDs can also be used with a contact probe (pictured above) and a leaf clip, allowing the easy collection of small sample spectra.

Specification

Spectral Range:

350-2500 nm

Sampling Interval:

1.4 nm, 350-1000 nm

2 nm, 1000-2500 nm

Spectral Resolution (FWHM):

3 nm @ 700 nm

10 nm @ 1400

10 nm @ 2100nm

Detectors:

One 512 element VNIR silicon photodiode array (350-1000 nm)
Two separate, TE cooled, graded index SWIR InGaAs photodiodes (1000- 1830nm, and 1830-2500 nm)

Input:

1.4 m fiber optic light guide

Fore Optics Field of View:

8°, 18°, 25°

Additional Fore Optics:

Cosine diffuser - irradiance measurements

High intensity contact probe

Leaf Clip

Typical scan time (perfect skies):

3 seconds

Power source:

Mains, external NiMH rechargeable cells, or 12V batteries (including car cigarette adapter)