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27 September 2012 Thin glass shell oriented to wide field x-ray telescope
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The next generation wide-field X-ray telescope (WFXT), to be implemented beyond eRosita and proposed within the NASA RFI call 2011, requires an angular resolution of less than 10 arcsec (with goal of 5”) constant across a wide field of view (1 deg2). To achieve this requirement the design is based on nested modified grazing incidence Wolter-I mirrors with polynomial profiles. Our goals in terms of mass and stiffness can be meet with the use of fused silica glass, a wellknown material with good thermo-mechanical properties and polishability characteristics, together with an innovative polishing approach. Here we present the X-ray calibration results obtained for a prototypal shell tested in fullillumination mode at the Panter/MPE facility.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. M. Civitani, O. Citterio, S. Campana, P. Conconi, E. Mattaini, G. Pareschi, G. Tagliaferri, G. Parodi, V. Burwitz, G. D. Hartner, J. Arnold, S. Schuler, H. Combrinck, R. Freeman, R. Morton, P. Simpson, and D. Walker "Thin glass shell oriented to wide field x-ray telescope", Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84430Q (27 September 2012);

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