Ghost image behavior in Wolter type I X-ray telescopes

Details Ghost image behavior in Wolter type I X-ray telescopes Ghost image behavior in Wolter type I X-ray telescopes

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apopt..27.1486m&link_type=abstract

(SPIE, Conference on Grazing Incidence Optics for Astronomical and Laboratory Applications, San Diego, CA, Aug. 17-19, 1987) App

Physics

Optics

2

Ghosts, Grazing Incidence, Image Analysis, X Ray Telescopes, Apertures, Computerized Simulation, Ray Tracing, Reflected Waves, Vignetting

Scientific paper

In Wolter type I grazing incidence telescopes, ghost images result whenever unreflected X rays or singly reflected X rays pass through the telescope and impinge on the focal plane. These ghost images degrade image quality and can be eliminated by appropriately positioned stops and baffles. However, conflicting demands can be placed on an aperture design by requirements for field of view, vignetting, and ghost image control. These problems are particularly severe for high energy X-ray telescopes which require very small grazing angles of incidence. Analytical and numerical tools are developed and used to perform parametric analyses of ghost image behavior and to obtain an aperture plate design capability that can be utilized to satisfy specific ghost image requirements.

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