Spectral Calibration of the SLSTR Focal Plane Assemblies
- Rutherford Appleton Laboratory, RAL Space, United Kingdom of Great Britain and Northern Ireland (tim.nightingale@stfc.ac.uk)
We describe a novel technique – Fourier transform spectroscopy – that we have developed to characterise the spectral and polarisation responses of the Sentinel-3 SLSTR optical channels. Our method has a number of advantages over conventional approaches employing a grating monochromator, including excellent spectral registration and resolution, intrinsic rejection of self-emission from the test setup and fast measurement times. Our measurements are traceable, through the spectral responsivity of a reference detector and the wavelength of a HeNe laser, to national standards.
We illustrate our method with sample results from the spectral calibrations of the four SLSTR focal plane assemblies tested to date.
How to cite: Nightingale, T., McPheat, R., Lee, A., Polehampton, E., Pedretti, E., and Mortimer, H.: Spectral Calibration of the SLSTR Focal Plane Assemblies, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-22057, https://doi.org/10.5194/egusphere-egu2020-22057, 2020