Final correction by Ion Beam Figuring of thin shells for X-ray telescopes

M. Ghigo; S. Basso; M. Civitani; R. Gilli; G. Pareschi; B. Salmaso; G. Vecchi; W. W. Zhang

doi:10.1117/12.2313939

10 July 2018 Final correction by Ion Beam Figuring of thin shells for X-ray telescopes

M. Ghigo, S. Basso, M. Civitani, R. Gilli, G. Pareschi, B. Salmaso, G. Vecchi, W. W. Zhang

Proceedings Volume 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III; 107063I (2018) https://doi.org/10.1117/12.2313939
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

Future space X-ray mission concepts like STAR-X, AXIS and Lynx foresee optics with both high angular resolutions (HEW ~ 0.5 to 5 arcsec) and large collecting areas (~0.2-2.0 m²). These optics are very challenging to be produced and their manufacturing is under study. The Ion Beam Figuring (IBF) is one of the few techniques that is capable of correcting the residual manufacturing errors of the mirror shells and obtain the desired final optical figure. INAF-OABrera has two IBF facilities and is investigating the use of IBF on thin foils made by different materials, namely Silicon and Fused Silica. In this paper we describe the results obtained in a preliminary study on Silicon shells.

Citation Download Citation

M. Ghigo, S. Basso, M. Civitani, R. Gilli, G. Pareschi, B. Salmaso, G. Vecchi, and W. W. Zhang "Final correction by Ion Beam Figuring of thin shells for X-ray telescopes", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107063I (10 July 2018); https://doi.org/10.1117/12.2313939

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