Options for the ESO Very Large Telescope Primary Mirrors

Details Options for the ESO Very Large Telescope Primary Mirrors Options for the ESO Very Large Telescope Primary Mirrors

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..628..518e&link_type=abstract

Advanced Technology Optical Telescopes III, Proceedings of the Meeting held 3-6 March 1986, in Tucson, AZ. Edited by Larry Barr

Physics

1

Scientific paper

The ESO-VLT is based on the combination of four 8 m telescopes so as to provide a 16 m equivalent aperture. Two main possibilities for the manufacture of the mirror blanks are considered: a zero expansion glass ceramic from Schott and a lightweight steel structure. Manufacturing possibilities for both options as well as European industrial potentialities for the optical figuring are being reviewed. Results of the analysis of a particular honeycomb structure for the steel mirror and experimental data obtained on several test mirrors are presented.

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