Evaluation of the progress in the optical maintenance of the VLT mirrors

Paul Giordano

doi:10.1117/12.391542

20 July 2000 Evaluation of the progress in the optical maintenance of the VLT mirrors

Paul Giordano

Proceedings Volume 4003, Optical Design, Materials, Fabrication, and Maintenance; (2000) https://doi.org/10.1117/12.391542
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

Two years after the first light of UT1 a summary of the On- site optical maintenance situation seems necessary. A comparison with the Maintenance Program developed in Europe will be commented. Measured data on the large mirrors and the efforts to maintain and improve the on-site contamination at a low level will be presented. Data and pictures will illustrate the CO2 in-situ cleaning technique, advantage and disadvantage. Methods and results of the AMOS washing unit, in the preparation of mirrors before coating, will be presented. Emphasis will be put on the reflective Al coating quality of the LINDE coating unit and the achieved reflectivity data demonstrated.

Citation Download Citation

Paul Giordano "Evaluation of the progress in the optical maintenance of the VLT mirrors", Proc. SPIE 4003, Optical Design, Materials, Fabrication, and Maintenance, (20 July 2000); https://doi.org/10.1117/12.391542

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