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Proceedings Paper

Gemini's protected silver coatings: first two years in operation
Author(s): Tomislav Vucina; Maxime Boccas; Claudio Araya; Clayton Ahhee
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Paper Abstract

The Gemini twins were the first large modern telescopes to receive protected Silver coatings on their mirrors in 2004. We report the performance evolution of these 4-layer coatings in terms of reflectivity and emissivity. We evaluate the durability of these thin films by comparison to the evolution of some samples that we have produced and exposed since 2002. Finally, we will explain our maintenance plan.

Paper Details

Date Published: 6 July 2006
PDF: 10 pages
Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62730W (6 July 2006); doi: 10.1117/12.670866
Show Author Affiliations
Tomislav Vucina, Gemini Observatory (Chile)
Maxime Boccas, Gemini Observatory (Chile)
Claudio Araya, Gemini Observatory (Chile)
Clayton Ahhee, Gemini Observatory (United States)


Published in SPIE Proceedings Vol. 6273:
Optomechanical Technologies for Astronomy
Eli Atad-Ettedgui; Joseph Antebi; Dietrich Lemke, Editor(s)

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