In-process metrology for large astronomical mirrors

Details In-process metrology for large astronomical mirrors In-process metrology for large astronomical mirrors

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1333..280k&link_type=abstract

IN: Advanced optical manufacturing and testing; Proceedings of the Meeting, San Diego, CA, July 9-11, 1990 (A92-17451 05-74). Be

Astronomy and Astrophysics

Astronomy

1

Astronomical Observatories, Metrology, Mirrors, Reflecting Telescopes, Equipment Specifications, Ground Stations, Structural Weight

Scientific paper

The metrology applied during fabrication of the 3.5 m primary mirror of the New Technology Telescope (NTT) for the European Southern Observatory (ESO) is described. Issues discussed include optical specifications of the NTT; measurement of the radius of curvature; functional control of the manufacturing support; IR-interferometry; VIS-interferometry; results for the primary and the full optical train; and improvements of VIS-interferometry for astronomical mirrors.

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