Computer Science – Performance
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007spie.6692e..22a&link_type=abstract
Cryogenic Optical Systems and Instruments XII. Edited by Heaney, James B.; Burriesci, Lawrence G.. Proceedings of the SPIE, Volu
Computer Science
Performance
Scientific paper
The James Webb Space Telescope (JWST) has among its challenges the minimization of the effects of ice on its optical performance in terms of transmission. The ice is a result of JWST's architecture, mission design and materials selection. The optical properties of ice are introduced to illustrate why there is concern among JWST's designers about ice build up. Several alternate methods of determining the impact on mirror reflectance are compared. Two are derived from Beer's Law and the third is full thin film treatment. It is shown and argued that only the thin film method captures enough of the physics of interaction of the incident light with an ice coated mirror.
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