The eROSITA camera array on the SRG satellite

Norbert Meidinger; Robert Andritschke; Konrad Dennerl; Valentin Emberger; Tanja Eraerds; Olaf Haelker; Gisela Hartner; Daniel Pietschner; Jonas Reiffers

doi:10.1117/12.2560518

13 December 2020 The eROSITA camera array on the SRG satellite

Norbert Meidinger, Robert Andritschke, Konrad Dennerl, Valentin Emberger, Tanja Eraerds, Olaf Haelker, Gisela Hartner, Daniel Pietschner, Jonas Reiffers

Author Affiliations +

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 114444O (2020) https://doi.org/10.1117/12.2560518
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The SRG satellite with the eROSITA X-ray telescope as scientific payload was successfully launched on July 13, 2019 and deployed in a 6-month halo orbit around the second Lagrange point of the Sun Earth system. The telescope comprises an array of seven mirror systems with seven focal plane cameras. The spectroscopic CCD cameras are a further development of the very successful EPIC PN camera on the XMM-Newton satellite, which is after 20 years in space still successfully operating. Key component of the camera is the detector, which matches the large field of view of 1° to permit an all-sky survey in the energy range from 0.2 keV to 8 keV with state-of-the-art energy resolution. The image area of the PNCCD comprises 384 x 384 pixels. Their size of 75 x 75 μm² each, matches the angular resolution of the mirror system. Readout of the full frame is achieved in 9.18 ms but for thermal and onboard event pre-processing reasons, the time resolution is slowed down to 50 ms. The photon entrance window of five of the seven CCDs is equipped with an optical blocking filter, which turned out to be advantageous. The improved concept and design of the eROSITA cameras will be explained as well as their operation and performance in space.

Citation Download Citation

Norbert Meidinger, Robert Andritschke, Konrad Dennerl, Valentin Emberger, Tanja Eraerds, Olaf Haelker, Gisela Hartner, Daniel Pietschner, and Jonas Reiffers "The eROSITA camera array on the SRG satellite", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114444O (13 December 2020); https://doi.org/10.1117/12.2560518

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available