6 July 2006 Gemini's protected silver coatings: first two years in operation
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Proceedings Volume 6273, Optomechanical Technologies for Astronomy; 62730W (2006); doi: 10.1117/12.670866
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States
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.
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Tomislav Vucina, Maxime Boccas, Claudio Araya, Clayton Ahhee, "Gemini's protected silver coatings: first two years in operation", Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62730W (6 July 2006); doi: 10.1117/12.670866; https://doi.org/10.1117/12.670866
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KEYWORDS
Mirrors

Reflectivity

Silver

Gemini Observatory

Telescopes

Thin film coatings

Infrared radiation

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