26 September 2013 Development status of adjustable grazing incidence optics for 0.5 arc second x-ray imaging
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We describe progress in the development of adjustable grazing incidence X-ray optics for 0.5 arcsec resolution cosmic X-ray imaging. To date, no optics technology is available to blend high resolution imaging like the Chandra X-ray Observatory, with square meter collecting area. Our approach to achieve these goals simultaneously is to directly deposit thin film piezoelectric actuators on the back surface of thin, lightweight Wolter-I or Wolter- Schwarschild mirror segments. The actuators are used to correct mirror figure errors due to fabrication, mounting and alignment, using calibration and a one-time figure adjustment on the ground. If necessary, it will also be possible to correct for residual gravity release and thermal effects on-orbit. In this paper we discuss our most recent results in operating multiple adjusters, and extending the process from flat test mirrors to cylindrical and conical test mirror segments. A comparison of modeled and measured influence functions is shown. We also present simulation results showing the process is consistent with the achievement of half arcsec imaging.
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Paul B. Reid, Paul B. Reid, Thomas L. Aldcroft, Thomas L. Aldcroft, Vincenzo Cotroneo, Vincenzo Cotroneo, William Davis, William Davis, Raegan L. Johnson-Wilke, Raegan L. Johnson-Wilke, Stuart McMuldroch, Stuart McMuldroch, Brian D. Ramsey, Brian D. Ramsey, Daniel A. Schwartz, Daniel A. Schwartz, Susan Trolier-McKinstry, Susan Trolier-McKinstry, Alexey Vikhlinin, Alexey Vikhlinin, Rudeger H. T. Wilke, Rudeger H. T. Wilke, "Development status of adjustable grazing incidence optics for 0.5 arc second x-ray imaging", Proc. SPIE 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI, 88611Q (26 September 2013); doi: 10.1117/12.2026429; https://doi.org/10.1117/12.2026429

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