The optical arrangement of ATSR (for sea-surface temperature measurement) is described. Radiometric constraints upon the sizes, positions and temperatures of stops in the system are discussed and their impact on the design summarized. Data on the predicted image resolution are given, allowing for residual geometrical aberrations, diffraction, signal integration time and a manufacturing/assembly error budget.
Peter F. Gray, Peter F. Gray,
"The Optical System of the Along Track Scanning Radiometer (ATSR)", Proc. SPIE 0589, Instrumentation for Optical Remote Sensing from Space, (1 May 1986); doi: 10.1117/12.951923; https://doi.org/10.1117/12.951923