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Calibration
Each Ocean ST contains wavelength calibration coefficients, linearity coefficients, and a serial number unique to each spectrometer. The spectroscopy applica-
tion reads these values directly from the spectrometer, enabling the ability to “hot-swap” spectrometers between computers without entering the spectrometer
coefficients manually on each computer.
Wavelength Calibration
Each spectrometer is calibrated before it leaves Ocean Insight, however the wavelength for all spectrometers will drift slightly as a function of time and envi-
ronmental conditions.
For instructions on how to calibrate the OCEAN ST, visit
.
Irradiance Calibrations
Irradiance calibrations and relative irradiance calibrations are about quantifying the spectra, by translating the signal (incident number of photons) to a cali-
bration. This can be either absolute (an atomic emission light source of known output power) or relative (corrected for instrument response function but not
absolute units). It can be considered a measurement technique and is used widely in remote sensing, light metrology and anywhere where you wish to charac-
terize the incident light source. Irradiance calibrations are not required for many techniques because these measure the relative signal changes with respect to
the sample and not the light source.
You can find out more about irradiance calibration techniques at
.
OceanView has wizards that will step you through absolute irradiance and relative calibrations and more information on these is located in the OceanView.
