X-ray imaging telescope on EXOSAT

Details X-ray imaging telescope on EXOSAT X-ray imaging telescope on EXOSAT

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979spie..184..181l&link_type=abstract

In: Space optics: Imaging X-ray optics workshop; Proceedings of the Seminar, Huntsville, Ala., May 22-24, 1979. (A80-17469 05-89

Physics

Optics

4

Exosat Satellite, X Ray Imagery, X Ray Telescopes, Grazing Incidence, Manufacturing, Reflectance, Replicas, Surface Finishing, Technology Utilization, Vacuum Tests

Scientific paper

The European X-ray observatory EXOSAT, to be launched in 1981, will carry two Wolter I type X-ray telescopes, each having a geometric area of about 100 sq cm. Due to severe mass constraint of only 7 kg per mirror assembly, imposed by the spacecraft, an epoxy replication technique has been used for the mirror fabrication. A description is given of the manufacturing techniques employed to produce the glass master, the beryllium substrate and the final replica mirror shells. Special measurement and control techniques were used during the replica optics manufacturing. These techniques and some of the results are discussed. Finally a description of the integration and alignment procedure and performance figures in optical light are also given.

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