Desert Deployment Notes: Dust and Thermal Camera Performance
Fine dust coats optics within days and quietly blunts thermal contrast at range. Daily cleaning and simple lens hoods restored most of the lost performance.
Daytime ground heat flattened contrast, so the best thermal detection window turned out to be the hour before dawn.
Spare desiccant and sealed transport cases prevented condensation when units came in from the cold night into a warm shelter.
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Pre-dawn being the best window matches our experience exactly. Midday thermal is almost useless over sand.