Stray light analysis of the Cryogenic Limb Array Etalon Spectrometer

The stray light analysis performance of the Cryogenic Limb Array Etalon Spectrometer (CLAES), which is to be flown on NASA's Upper Atmospheric Research Satellite, was evaluated using the APART/PADE code, and the results are reported. The analysis, together with Brassboard measurements, confirm that the data to be collected by CLAES should not be significantly degraded by stray light resulting from scattering within the system. It is also verified that diffraction effects are successfully controlled by the cascaded stop configuration.