X-ray optics - A technique for high resolution imaging

Details X-ray optics - A technique for high resolution imaging X-ray optics - A technique for high resolution imaging

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apopt..26.2915c&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 26, July 15, 1987, p. 2915-2920.

Physics

Optics

7

Grazing Incidence, Image Processing, Image Resolution, X Ray Imagery, Apertures, Grazing Incidence Telescopes, Image Reconstruction, Pixels, X Ray Telescopes

Scientific paper

Both scattering and figure errors in grazing incidence optics are larger in the plane of incidence than out-of-plane by a factor equal to 1/sin theta, where theta is the graze angle. When the full annular aperture of a grazing incidence telescope is stopped down, the point spread function becomes highly elliptical with a width as much as sin theta times narrower than the full image. In practice, this means that improvements in resolution of up to 100 times can be achieved, and effective resolution can approach the diffraction limit. Laboratory data demonstrating the effect are presented.

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