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eROSITA Camera Low Temperature Thermal Control
Technical Paper
2008-01-1957
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is a powerful X-ray telescope under development by the Max-Planck-Institut für extraterrestrische Physik (MPE) in Garching, Germany. eROSITA is the core instrument on the Russian SRG1 mission which is planned for launch in 2011. It comprises seven nested Wolter-I grazing incidence telescopes, each equipped with its own CCD camera. The mirror modules have to be maintained at 20°C while the cameras are operated at -80°C. Both, mirrors and CCDs have to be kept within tight limits. The CCD cooling system consists of passive thermal control components only: two radiators, variable conductance heat pipes (VCHP) and two special thermal storage units. The orbit scenario imposes severe challenges on the thermal control system and also on the attitude control system.
This paper deals with the evaluation of the orbit parameters and the definition of the constraints for the thermal control system which are needed to match the temperature requirements. It presents the selected thermal control solution, its predicted performance and reports on test results obtained from an engineering model.
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Citation
Fürmetz, M., Eder, J., Predehl, P., and Tiedemann, L., "eROSITA Camera Low Temperature Thermal Control," SAE Technical Paper 2008-01-1957, 2008, https://doi.org/10.4271/2008-01-1957.Also In
References
- Fürmetz M. “Entwicklung eines Kühlkonzepts für das Röntgenteleskop eROSITA” diploma thesis Technische Universität München Garching, Germany 2007
- Tiedemann L. Eder J. Fürmetz M. Predehl P. “Thermal Storage at -80°C for the eROSITA Telescope” 38th International Conference on Environmental Systems 08ICES-0325 SAE International, San Francisco 2008
- Eder J. Fürmetz M. “eROSITA Thermal Control System Concept Analysis” Tech. Rep., eRO-MPE-TN-42-01_1 MPE Garching, Germany 2007
- Predehl P. “eROSITA Mission Description” Tech. Rep., eRO-MPE-DD-13-01_2 MPE Garching, Germany 2007
- Hasinger G. “eROSITA, Vorschlag für ein Röntgenteleskop auf der russischen Plattform Spektr-RG” MPE 2006
- Eder J. “eROSITA Telescope Design” Tech. Rep., eRO-MPE-DD-13-02_1 MPE 2007