• Materials Science, Engineering
  • Published in
    Astronomical Telescopes…
    2018
  • DOI:10.1117/12.2313661

A UV-enhanced protected silver coating for the Gemini telescopes

@inproceedings{Schneider2018AUP,
  title={A UV-enhanced protected silver coating for the Gemini telescopes},
  author={Tom Dario Schneider and Paul Stupik},
  booktitle={Astronomical Telescopes + Instrumentation},
  year={2018}
}
A 4-layer protected silver coating was chosen for the Gemini telescopes due to its high reflectivity in visible and infrared wavelengths. Due to the reflective and absorptive properties of silver, the Gemini 4-layer coating suffers from poor reflectivity in wavelengths shorter than 400 nm. By utilizing different dielectric materials for protective layers it is possible to enhance the reflectance of silver to 350 nm, without compromising infrared performance or coating durability. Several… CONTINUE READING

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