8m Class Primary: Figuring, Testing, Handling

Ernst Dieter Knohl; Andreas Schleth; Klaus Beckstette; Michael Kuchel

doi:10.1117/12.949382

13 April 1989 8m Class Primary: Figuring, Testing, Handling

Ernst Dieter Knohl, Andreas Schleth, Klaus Beckstette, Michael Kuchel

Proceedings Volume 1013, Optical Design Methods, Applications and Large Optics; (1989) https://doi.org/10.1117/12.949382
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

The evolution of traditional polishing techniques and a new method developed at Carl Zeiss are reviewed with respect to their suitability to figure large and fast primaries of the 8m class. The role of fast metrology techniques in the figuring process is demonstrated with the ESO NTT primary mirror. The figuring scenario for an 8m mirror as a synthesis of advanced tool technology and fast metrology methods is presented as state of the art at Carl Zeiss. For handling and figuring support of large mirrors new concepts have to be applied. Solutions for the critical steps are outlined.

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Ernst Dieter Knohl, Andreas Schleth, Klaus Beckstette, and Michael Kuchel "8m Class Primary: Figuring, Testing, Handling", Proc. SPIE 1013, Optical Design Methods, Applications and Large Optics, (13 April 1989); https://doi.org/10.1117/12.949382

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