Fabrication of blanks, figuring, polishing, and testing of astronomical mirrors for SALT, VST, LAMOST, and other projects

Details Fabrication of blanks, figuring, polishing, and testing of astronomical mirrors for SALT, VST, LAMOST, and other projects Fabrication of blanks, figuring, polishing, and testing of astronomical mirrors for SALT, VST, LAMOST, and other projects

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.td02...55a&link_type=abstract

Medical Imaging 2003: Image Perception, Observer Performance, and Technology Assessment. Edited by Chakraborty, Dev P.; Krupins

Computer Science

Performance

Scientific paper

During 1997-2002 JSC "LZOS" has fabricated a number of astronomical mirrors under the contracts with Carl Zeiss Jena, Germany such as four primary mirrors with hyperbolic figure of 2050mm (F/3) in diameter and two secondary mirrors of 645 mm (F/2.5) in diameter for Telescope Technologies Ltd, UK, primary mirror of 2280 mm (F/2.3) and secondary mirror of 753 mm (F/2) for NOA telescope (Astronomical Institute -- National Observatory of Athens, Greece), primary mirror of 2650 mm (F/1.8) and secondary mirror of 938 mm (F/2.3) with an asphericity of 100 μm for the VST telescope (VLT Survey Telescope). We have completed a number of astronomical mirrors with diameters up to 1300 mm for some European countries and the USA. The rms surface quality of all of the mirrors was in the range from 9 to 12 nm. We used computer controlled figuring, polishing and testing. All mirrors were made of Sitall CO-115M, producing by LZOS, some of them were of Zerodur. Our current projects are manufacturing primary mirror segment blanks for SALT project, figuring and polishing of the LAMOST Mb submirrors.

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