Calibration of the ART-XC mirror modules at MSFC
| Autor: | Brian D. Ramsey, R. A. Burenin, S. L. O'Dell, Douglas A. Swartz, Vyacheslav E. Zavlin, A. Tkachenko, I. A. Mereminskiy, E. V. Filippova, M. N. Pavlinsky, Sergey Sazonov, Jeffrey Kolodziejczak, S. Molkov, I. Lapshov, Mikhail V. Gubarev, Roman Krivonos |
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| Rok vydání: | 2017 |
| Předmět: |
Point spread function
Physics Spacecraft business.industry Detector Astrophysics::Instrumentation and Methods for Astrophysics FOS: Physical sciences Astronomy and Astrophysics Ellipse 01 natural sciences law.invention 010309 optics Telescope Cardinal point Optics Space and Planetary Science law 0103 physical sciences Calibration Angular resolution Astrophysics - Instrumentation and Methods for Astrophysics business 010303 astronomy & astrophysics Instrumentation and Methods for Astrophysics (astro-ph.IM) |
| DOI: | 10.48550/arxiv.1708.09783 |
| Popis: | The Astronomical Roentgen Telescope X-ray Concentrator (ART-XC) is a hard X-ray telescope with energy response up to 30 keV, to be launched on board the Spectrum Roentgen Gamma (SRG) spacecraft in 2018. ART-XC consists of seven identical co-aligned mirror modules. Each mirror assembly is coupled with a CdTe double-sided strip (DSS) focal-plane detector. Eight X-ray mirror modules (seven flight and one spare units) for ART-XC were developed and fabricated at the Marshall Space Flight Center (MSFC), NASA, USA. We present results of testing procedures performed with an X-ray beam facility at MSFC to calibrate the point spread function (PSF) of the mirror modules. The shape of the PSF was measured with a high-resolution CCD camera installed in the focal plane with defocusing of 7 mm, as required by the ART-XC design. For each module, we performed a parametrization of the PSF at various angular distances Theta. We used a King function to approximate the radial profile of the near on-axis PSF (Theta Comment: 16 pages, 10 figures, 5 tables, Accepted in Experimental Astronomy |
| Databáze: | OpenAIRE |
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