The world class calibration facilities of the Field Spectroscopy Facility are available to academic and research institutes in the UK and Europe for the calibration of remote sensing field spectroradiometers. These services include the system response calibration of instruments for spectral radiance and irradiance measurements, and the calibration of reference panels for spectral diffuse reflectance measurements. The facility also offers a wavelength validation service for quantifying the spectroradiometer's wavelength scale errors.
Our laboratory facilities can also be accessed for your own calibration/validation/intercalibration projects.
Below is a list of some of our avaliable equipment and standards. This list is not exhaustive - please get in contact with us if you have any questions regarding the FSF Laboratory. Please note - laboratory use is subjuect to avaliablity and application. Please see our Loans page for more information on how to apply.
Table 1 lists the National Physical Laboratory (NPL) calibrated standards used by the facility to perform the calibration services. Addition items of equipment used in the laboratory are listed in table 2.Table 1 Calibration Standards
|Spectral Standard||Equipment||Spectral Range||NPL Certificate No.|
|Spectral radiance source||Labsphere Helios high performance source||380 - 2500 nm||2016020157-RB1-17|
|Spectral radiance source||Sphere Optics LR-20 custom sphere source||380 - 2500 nm||2013030091-RB4-13|
|Spectral irradiance source||Gooch & Housego 1KWatt FEL lamp||250 - 2500 nm||2016020157-IB2-16|
|Spectral reflectance panel||Labsphere SRT-99-050 Spectralon target||380 - 2500 nm||E05090223|
|Macam L203 photometer||Independent verification of illuminance & luminance levels|
|Macam SMU203 spot measurement accessory||Independent verification of radiance source luminance levels|
|Gooch & Housego OL 410-1000 stabilised current source||Stabilised power supply for FEL irradiance standard|
|Ar, Hg-Ar, Kr, Ne & Xe spectral line lamps||Wavelength scale verification > 40 spectral emission lines 350 - 2500nm|
|Labsphere erbium oxide doped reflectance panel||Wavelength scale verification (488, 522.2, 653.9, 799.2 .. 1534.4 nm)|
|NPL calibrated McCrone filter||Wavelength scale verification (481, 588.6, 748.4, 869.2 .. 2326.8 nm)|
|Calibrated Mylar sheets (NIST Traceable)||Wavelength scale verification (1128.7, 1659.9, 1904.6, ... 2444.5 nm)|
|Analytical Spectral Devices filter wheel & fibre source||ASD FieldSpec Pro linearity and noise tests|
The FSF calibration laboratory is available to NERC UK researchers to verify the calibration and performance of their own field spectroradiometers & accessories. Access to the FSF calibration Laboratory through the Application Form
|Verification of wavelength scale||Spectral line emission lamps, > 40 points 350 - 2500nm, absorption filters|
|Reference panel 8°/T reflectance factors||Labsphere Spectralon Reference Tile|
|Verification of radiance calibration||NPL calibrated radiance sphere source|
|Verification of irradiance calibration||NPL calibrated irradiance FEL irradiance standard|