SRG/eROSITA status and operations during the first four all-sky surveys
Coutinho D, Ramos-Ceja ME, Dennerl K, Haberl F, Meidinger N, Merloni A, Predehl P, Stewart I, Freyberg M, Bornemann W, Brunner H, Burwitz V, Czesla S, Eder J, Friedrich S, Gaida R, Gueguen A, Hartner G, Kink W, Kreykenbohm I, Lamer G, Maitra C, Mernik T, Mueller S, Nandra P, Pfeffermann E, Robrade J (2022)
Publication Type: Conference contribution
Publication year: 2022
Journal
Publisher: SPIE
Book Volume: 12181
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: Montreal, QC
ISBN: 9781510653436
DOI: 10.1117/12.2628946
Abstract
eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the soft X-ray scientific payload on board the SRG (Spektrum-Roentgen-Gamma) mission. It was successfully launched from Baikonur in July 2019. Following a 101 days cruise phase, SRG reached its final orbit around the Sun-Earth Lagrangian point L2, from where it has carried out already four full-sky surveys. 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. Following that, the main science mission, comprised of an early Calibration and Performance Verification Phase, followed by the all-sky survey. This paper presents the performance of the eROSITA telescope during the first four complete all-sky surveys. It presents the challenges encountered during the telescope operations as well as the operations and mitigation strategies put in place to understand or minimize the effects of the space environment in L2, such as micrometeoroid hits and radiation damage of the detectors.
Authors with CRIS profile
Involved external institutions
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
Universität Hamburg (UHH)
Germany (DE)
Leibniz Institute for Astrophysics Potsdam / Leibniz-Institut für Astrophysik Potsdam
Germany (DE)
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center
Germany (DE)
Germany (DE)
Universität Hamburg (UHH)
Germany (DE)
Leibniz Institute for Astrophysics Potsdam / Leibniz-Institut für Astrophysik Potsdam
Germany (DE)
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center
Germany (DE)
How to cite
APA:
Coutinho, D., Ramos-Ceja, M.E., Dennerl, K., Haberl, F., Meidinger, N., Merloni, A.,... Robrade, J. (2022). SRG/eROSITA status and operations during the first four all-sky surveys. In Jan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. Montreal, QC, US: SPIE.
MLA:
Coutinho, D., et al. "SRG/eROSITA status and operations during the first four all-sky surveys." Proceedings of the Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, Montreal, QC Ed. Jan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa, SPIE, 2022.
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