Translator Disclaimer
13 December 2020 SRG/eROSITA early phase and commissioning operations
Author Affiliations +
eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary scientific payload on board the SRG (Spektrum Röntgen Gamma) mission, successfully launched from Baikonur in July 2019. Following a 101 days cruise phase, SRG reached its final orbit around the Lagrangian point L2, where it will carry out its mission of making a full survey of the X-ray sky. eROSITA is a complex instrument composed of seven identical co-aligned X-ray telescopes with a focal length of 1600mm and an aperture of 350mm. Each telescope is equipped with an independent CCD camera. The cold redundant ITC (Interface and Thermal Controller) manages all seven cameras as well as the thermal control of the telescope and the interface to the spacecraft. The cruise phase of SRG was used to verify that all systems had survived launch and no degradation in the functionality was present. In addition, the critical one-time operations of opening the telescope cover and cooling the CCD detectors to -90°C were carried out during this phase. The extreme reliance on the instrument controller (ITC) for the survival of the telescope, in addition to the thermal control an data handling systems that are under control of the ITC, make it pertinent to report on how these systems behaved in the initial phases of the mission. This paper presents an overview of the telescope operations during the early phase and commissioning that verified functionality of thermal and electrical systems and commissioned the cameras before the important Calibration and Pointed Verification phase started. In addition, it reports on the challenges encountered and summarizes the results from this phase of eROSITA operations.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. Coutinho, W. Bornemann, R. Gaida, G. Hartner, W. Kink, N. Meidinger, S. Müller, and P. Predehl "SRG/eROSITA early phase and commissioning operations", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114444S (13 December 2020);


The Zwicky Transient Facility Camera
Proceedings of SPIE (August 09 2016)
eROSITA system functionality and operation
Proceedings of SPIE (July 06 2018)
Proceedings of SPIE (June 13 2006)
Matching A Curved Focal Plane With CCD's Wide Field...
Proceedings of SPIE (January 01 1987)
Proceedings of SPIE (September 17 2012)
Focal plane CCD camera for the X Ray Telescope (XRT)...
Proceedings of SPIE (October 12 2004)

Back to Top