X-ray testing of the Einstein Probe follow-up x-ray telescope STM at MPE’s PANTER facility

Miranda Bradshaw; Vadim Burwitz; Peter Friedrich; Gisela Hartner; Andreas Langmeier; Giuseppe Valsecchi; Dervis Vernani; Yong Chen

doi:10.1117/12.2560972

13 December 2020 X-ray testing of the Einstein Probe follow-up x-ray telescope STM at MPE’s PANTER facility

Miranda Bradshaw, Vadim Burwitz, Peter Friedrich, Gisela Hartner, Andreas Langmeier, Giuseppe Valsecchi, Dervis Vernani, Yong Chen

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Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 1144457 (2020) https://doi.org/10.1117/12.2560972
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

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Abstract

The Einstein Probe mission, due to launch in late 2022, will study time-domain astrophysics and monitor variable objects. It aims to observe x-ray counterparts of gravitational wave sources and high-redshift gamma ray bursts. Developed and built by the Chinese Academy of Sciences, Einstein Probe will use two types of telescope: the WideField X-ray Telescope (WXT) and the Follow-Up X-ray Telescope (FXT). The FXT will perform follow-up observations of sources discovered by the WXT, and will observe in the energy range of 0.5 to 8 keV. The performance aim of the FXT – the point spread function half-energy width (PSF HEW) – is <20 arcseconds (on-axis at 1.49 keV). The Max-Planck Institute for Extraterrestrial Physics (MPE) is producing and integrating the x-ray straylight baffle for the FXT, as well as testing and calibrating the different models of the FXT x-ray optic. Production of the structural-thermal model (STM) for Einstein Probe FXT began in 2019. The STM mirror module, produced by Media Lario, has been tested at MPE’s PANTER x-ray test facility. Following this acceptance test, further x-ray tests have been performed at PANTER after each of the subsequent stages: the mounting of the x-ray baffle, the shock and vibration test, and the thermal cycling test. The x-ray performance of the FXT STM is documented at each stage and the results of each test are presented in this paper.

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Miranda Bradshaw, Vadim Burwitz, Peter Friedrich, Gisela Hartner, Andreas Langmeier, Giuseppe Valsecchi, Dervis Vernani, and Yong Chen "X-ray testing of the Einstein Probe follow-up x-ray telescope STM at MPE’s PANTER facility", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 1144457 (13 December 2020); https://doi.org/10.1117/12.2560972

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