AATSR Function & Performance. Thermal Cooler Performance Scan mirror performance. In-Orbit Temperatures Vs. Flight Predictions. Thermal Stability. Blackbodies Orbital variation ~ ± 0.1 °C Rate of change <0.015 °C per two minutes (reqt. <0.02°C) Fore-Optics Orbital variation ~ ± 0.5 °C
Max commanded compressor A amplitude = 2.679
Software increases amplitude to maintain a commanded FPA baseplate temperature
Thermal load increasing with time as water condenses, with the rate of condensation slowly reducing as the mission progresses and ENVISAT-1 loses its atmosphere.
(Some scan mirror jitter can be expected during early stages of mission while the lead-bronze lubricant tracks are being established which will improve with time)