8m class primary: figuring, testing, handling.

Details 8m class primary: figuring, testing, handling. 8m class primary: figuring, testing, handling.

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1013..216k&link_type=abstract

Conference on Optical Design Methods, Applications, and Large Optics in Conjunction with the 1. International Congress on Optica

Physics

Optics

Optical Testing

Scientific paper

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 8 m class. The role of fast metrology techniques in the figuring process is demonstrated with the ESO NTT primary mirror. The figuring scenario for an 8 m 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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