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Testing of lobster-eye type telescopes with X-rays and visible light

  • Reflective coatings for astronomical X-ray optics were developed at the “Aschaffenburg Competence Center for Astronomical and Space Instrumentation” (ACCASI) since several years. As part of a Bavarian-Czech cooperation between the Technical University of Aschaffenburg and the Czech Technical University of Prague, now two mechanically identical telescopes were built. One telescope optic was equipped with conventional gold-coated mirrors, manufactured by the Czech project partners. The 34 X-ray mirrors of the second telescope use an innovative coating system made of chromium and iridium, which was applied at the Aschaffenburg coating laboratory. Both telescopes are designed according to the bionic principle of a reflecting lobster eye. The optics works with two consecutive reflections on mutually perpendicular mirror surfaces. This enables a large field of view with many square degrees in diameter, which, however, comes at the price of a reduced angular resolution. An extensive X-ray characterization of these telescopes was carried out at the PANTER test facility of MPE, which simulates parallel starlight incident on the telescopes. The telescopes have an angular resolution of about 4 arc minutes in X-rays and a focal length of about 2 meters. Furthermore, the used X-ray mirrors reflect and focus visible light as well and this functionality in the optical regime was checked in laboratory tests. Now another test campaign was done to examine the telescope resolution for real objects of the visible sky and the imaging properties for star constellations. Such functional tests by observing astronomical objects of the visible sky may simplify and accelerate the development of X-ray telescopes for satellite applications.
Metadaten
Author:Thorsten DöhringORCiD, Veronika StieglitzORCiD, Peter FriedrichORCiD, Vadim BurwitzORCiD, Martin JelinekORCiD, Rene HudecORCiD
DOI:https://doi.org/https://doi.org/10.1117/12.2665429
Parent Title (English):SPIE Proceedings
Publisher:SPIE
Document Type:Conference Proceeding
Language:English
Year of Completion:2023
Date of first Publication:2023/06/07
Creating Corporation:TH Aschaffenburg
Contributing Corporation:Max-Planck-Institut für Extraterrestrische Physik
Release Date:2024/02/27
Tag:Mirrors; Reflection; Telescopes; X-ray telescopes; X-rays
GND Keyword:Röntgenteleskop
Volume:2023
Issue:12576
Page Number:5
First Page:1257606-1
Last Page:1257606-5
Urheberrecht:0
Institutes:Fakultät Ingenieurwissenschaften / Studiengänge / Internationales Technisches Vertriebsmanagement (Bachelor)
research focus :Materials / Material Testing & Sensor Technology
Reviewed:nein
Licence (German):Keine Lizenz - es gilt das deutsche Urheberrecht
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