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- W2484204501 abstract "The project PLAnetary Transits and Oscillations of stars (PLATO) is one of the selected medium class (M class)missions in the framework of the ESA Cosmic Vision 2015-2025 program. The mean scientific goal of PLATO is thediscovery and study of extrasolar planetary systems by means of planetary transits detection. The opto mechanicalsubsystem of the payload is made of 32 normal telescope optical units (N-TOUs) and 2 fast telescope optical units (FTOUs).The optical configuration of each TOU is an all refractive design based on six properly optimized lenses. In thecurrent baseline, in front of each TOU a Suprasil window is foreseen. The main purposes of the entrance window are toshield the following lenses from possible damaging high energy radiation and to mitigate the thermal gradient that thefirst optical element will experience during the launch from ground to space environment. In contrast, the presence of thewindow increases the overall mass by a non-negligible quantity. We describe here the radiation and thermal analysis andtheir impact on the quality and risks assessment, summarizing the trade-off process with pro and cons on having ordropping the entrance window in the optical train." @default.
- W2484204501 created "2016-08-23" @default.
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- W2484204501 date "2016-07-29" @default.
- W2484204501 modified "2023-09-26" @default.
- W2484204501 title "Radiation, Thermal Gradient and Weight: a threefold dilemma for PLATO" @default.
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- W2484204501 doi "https://doi.org/10.1117/12.2232579" @default.
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