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Optical Engineering

Status of the development of a thin-foil, high-throughput x-ray telescope for the Soviet Spectrum x-gamma mission
Author(s): Niels J. Westergaard; B. P. Byrnak; Finn Erland Christensen; P. Grundsoe; Allan Hornstrup; S. Henrichsen; U. Henriksen; Ellen Jespersen; Hans Ulrich Noergaard-Nielsen; Josef Polny; Herbert W. Schnopper; P. Orup
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Paper Abstract

The first satellite in a planned series of Soviet astronomical x-ray and gamma-ray satellites will be equipped with two high-throughput telescopes to be manufactured by the Danish Space Research Institute. The optical system consists of two sets of nested cones, whose substrate is aluminum foil. The smooth surface is obtained by dip lacquering, and the reflective layer is gold. The design parameters have been optimized for high throughput at 7 keV. The mechanical design and the status of the surface preparation technologies are described. Various x-ray and optical test facilities for the measurement of surface roughness, "orange peel," and figure errors are described. An optical parallel beam has been established, and results from the first mounted mirrors are discussed. The design goal is an angular resolution of 2 arcmin (half energy width). The first results seem to indicate that this is feasible and the possibility of going down to 1.5 arcmin exists.

Paper Details

Date Published: 1 June 1990
PDF: 8 pages
Opt. Eng. 29(6) doi: 10.1117/12.55631
Published in: Optical Engineering Volume 29, Issue 6
Show Author Affiliations
Niels J. Westergaard, Danish Space Research Institute (Denmark)
B. P. Byrnak, Danish Space Research Institute (Denmark)
Finn Erland Christensen, Danish Space Research Institute (Denmark)
P. Grundsoe, Danish Space Research Institute (Denmark)
Allan Hornstrup, Danish Space Research Institute (Denmark)
S. Henrichsen, Danish Space Research Institute (Denmark)
U. Henriksen, Danish Space Research Institute (Denmark)
Ellen Jespersen, Danish Space Research Institute (Denmark)
Hans Ulrich Noergaard-Nielsen, Danish Space Research Institute (Denmark)
Josef Polny, Danish Space Research Institute (Denmark)
Herbert W. Schnopper, Danish Space Research Institute (Denmark)
P. Orup, Danish Space Research Institute (Denmark)


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