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Proceedings Paper

Progress on indirect glass slumping for future x-ray telescope optics
Author(s): Anita Winter; Elias Breunig; Peter Friedrich; Laura Proserpio
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Paper Abstract

Large X-ray telescopes for future observations need to combine a big collecting area with good angular resolution. Due to the mass limits of the launching rocket, light-weight materials are needed in order to enhance the collecting area in future telescopes. We study the development of mirror segments made from thin glass sheets which are shaped by thermal slumping. At MPE we follow the indirect approach which enables us the production of the parabolic and hyperbolic part of the Wolter type I mirrors in one piece. In our recent research we have used a test mould made of CeSiC™ for slumping processes in our lab furnace as well as in a heatable vacuum chamber, to avoid oxidation and air enclosure. Additional slumping tests in the vacuum furnace have been carried out using a Kovar mould and are compared with results under air. We describe the experimental set-up, the slumping process and the metrology methods and give an outlook on future activities.

Paper Details

Date Published: 25 July 2014
PDF: 8 pages
Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91441C (25 July 2014); doi: 10.1117/12.2056877
Show Author Affiliations
Anita Winter, Max-Planck-Institut für extraterrestrische Physik (Germany)
Elias Breunig, Max-Planck-Institut für extraterrestrische Physik (Germany)
Peter Friedrich, Max-Planck-Institut für extraterrestrische Physik (Germany)
Laura Proserpio, Max-Planck-Institut für extraterrestrische Physik (Germany)

Published in SPIE Proceedings Vol. 9144:
Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Jan-Willem A. den Herder; Mark Bautz, Editor(s)

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