Technical Paper
In-Flight Results of the Sciamachy Optical Assembly Active Thermal Control System
2004-07-19
2004-01-2357
Sciamachy is a Dutch/German Earth Observation Instrument on the European Envisat satellite, which was successfully launched on March 1st, 2002. The goal of the instrument is to observe concentrations of trace gases in the atmosphere. Due to the required optical accuracy of the instrument special thermal control methods have been incorporated in the instrument design. Amongst these are the active thermal control loops for the optical bench module. The optical bench module is therefore provided with three feedback-controlled heater loops. During the commissioning phase, the active thermal control systems in the instrument have been characterised in order to optimise their use during the operational phase of the instrument.
