Vignetting characteristics of the S-056 X-ray telescope

Details Vignetting characteristics of the S-056 X-ray telescope Vignetting characteristics of the S-056 X-ray telescope

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mra..reptr....f&link_type=abstract

Final Report Montevallo Research Associates, AL.

Physics

Ray Tracing, Vignetting, X Ray Telescopes, Contours, Focal Plane Devices, Mirrors, Optical Reflection, Shapes, Surfaces, Wavelengths

Scientific paper

A ray trace analysis of the vignetting characteristics of the S-056 X ray telescope is presented. The relative energy is calculated in the spot formed in the focal plane of the S-056 X ray telescope by an off axis point source at infinity for off axis angles of 0, 1, 2, ..., 35 arc minutes. At each off axis angle, the relative energies are evaluated using theoretical X ray reflectivity curves for wavelengths of 8.34 A, 17.57 A, and 27.39 A, and also using an experimental X ray reflectivity curve for 8.34 A. The effects of vignetting due purely to the geometry of the S-056 optical system are evaluated separately, as well as jointly with the effects of mirror reflectivity.

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