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Calibration of the ART-XC mirror modules at MSFC

机译：MSFC ART-XC镜像模块的校准

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摘要

The Astronomical Rontgen 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 Rontgen 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 Iy. We used a King function to approximate the radial profile of the near on-axis PSF (Iy < 9 arcmin) and an ellipse fitting procedure to describe the morphology of the far off-axis angular response (9 < Iy < 24 arcmin). We found a good agreement between the seven ART-XC flight mirror modules at the level of 10%. The on-axis angular resolution of the ART-XC optics varies between 27 and 33 arcsec (half-power diameter), except for the spare module.
机译：天文梁望远镜X射线集中器（ART-XC）是一个硬X射线望远镜，其能量响应高达30 keV，在2018年在频谱Rontgen Gamma（SRG）航天器上推出。Art-XC由七个组成相同的共识镜模块。每个镜子组件与CDTE双面条带（DSS）焦平面检测器耦合。在美国美国宇航局的马歇尔空间飞行中心（MSFC）开发和制造了八个X射线镜模块（七次飞行和一个备用单元），在美国宇航局的航空航天航天飞行中心（MSFC）开发和制造。我们在MSFC下用X射线束设施进行测试程序的结果，以校准镜像模块的点扩展功能（PSF）。根据ART-XC设计的要求，使用安装在焦平面中的高分辨率CCD摄像机测量PSF的形状。对于每个模块，我们在各种角度距离IY执行PSF的参数化。我们使用了一个王功能来近似近轴上PSF（IY <9 ARCMIN）和椭圆拟合程序的径向轮廓，以描述远轴角度响应的形态（9

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  • 来源
    《Experimental astronomy》 |2017年第1期|共18页
  • 作者

    Krivonos R.; Tkachenko A.; Burenin R.; Filippova E.; Lapshov I.; Mereminskiy I.; Molkov S.; Pavlinsky M.; Sazonov S.; Gubarev M.; Kolodziejczak J.; ODell S. L.; Swartz D.; Zavlin Vyacheslav E.; Ramsey B. D.;

  • 作者单位

    Russian Acad Sci Space Res Inst Profsoyuznaya Str 84-32 Moscow 117997 Russia;

    Russian Acad Sci Space Res Inst Profsoyuznaya Str 84-32 Moscow 117997 Russia;

    Natl Res Univ Higher Sch Econ Myasnitskaya Ul 20 Moscow 101000 Russia;

    Russian Acad Sci Space Res Inst Profsoyuznaya Str 84-32 Moscow 117997 Russia;

    Russian Acad Sci Space Res Inst Profsoyuznaya Str 84-32 Moscow 117997 Russia;

    Russian Acad Sci Space Res Inst Profsoyuznaya Str 84-32 Moscow 117997 Russia;

    Russian Acad Sci Space Res Inst Profsoyuznaya Str 84-32 Moscow 117997 Russia;

    Russian Acad Sci Space Res Inst Profsoyuznaya Str 84-32 Moscow 117997 Russia;

    Natl Res Univ Higher Sch Econ Myasnitskaya Ul 20 Moscow 101000 Russia;

    NASA Marshall Space Flight Ctr Huntsville AL 35812 USA;

    NASA Marshall Space Flight Ctr Huntsville AL 35812 USA;

    NASA Marshall Space Flight Ctr Huntsville AL 35812 USA;

    NASA Marshall Space Flight Ctr Huntsville AL 35812 USA;

    NASA Marshall Space Flight Ctr Huntsville AL 35812 USA;

    NASA Marshall Space Flight Ctr Huntsville AL 35812 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 天文学;
  • 关键词

    X-ray astrophysics; Instrumentation: X-ray optics;

    机译：X射线天体物理学;仪器：X射线光学;

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