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Proceedings Paper

Measurement and analysis of a set of mandrels for the JET-X x-ray optics
Author(s): Rainer Boerret; Holger Glatzel; Klaus-Friedrich Beckstette; Paolo Conconi; Oberto Citterio
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Paper Abstract

The Joint European X-Ray Telescope, JET-X, is one of the core instruments of the scientific payload of the Russian SPECTRUM-X astrophysics mission due for launch in 1995. JET-X is designed to study the emission from X-ray sources in the band from 0.3 to 10 keV, particularly to meet primary scientific goals in cosmology and extragalactic astronomy. JET-X consists of two identical, coaligned X-ray imaging telescopes, each with a spatial resolution of 30 arcsecond (Half Energy Width, HEW) or better. Each telescope is composed of a nested array of 12 mirrors with an aperture of 0.3 m and a focal length of 3.5 m. The mirror shells have Wolter I geometry and are replicated by an electroforming process for which Carl Zeiss manufactured the 12 monolithic Nickel coated aluminum mandrels. In order to determine the mandrel limited HEW, several measurement and analysis steps including raytracing calculations are performed. The major contributions to the error budget, axial slopes and roundness errors, as well as the position of the focus are investigated. The results are reported and discussed.

Paper Details

Date Published: 21 January 1993
PDF: 11 pages
Proc. SPIE 1742, Multilayer and Grazing Incidence X-Ray/EUV Optics for Astronomy and Projection Lithography, (21 January 1993); doi: 10.1117/12.140562
Show Author Affiliations
Rainer Boerret, Carl Zeiss (Germany)
Holger Glatzel, Carl Zeiss (Germany)
Klaus-Friedrich Beckstette, Carl Zeiss (Germany)
Paolo Conconi, Osservatorio Astronomico di Brera (Italy)
Oberto Citterio, Osservatorio Astronomico di Brera (Italy)


Published in SPIE Proceedings Vol. 1742:
Multilayer and Grazing Incidence X-Ray/EUV Optics for Astronomy and Projection Lithography
Richard B. Hoover; Arthur B. C. Walker, Editor(s)

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