Physics – Optics
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apopt..24.1164s&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 24, April 15, 1985, p. 1164-1170. Research supported by the Kitt Peak National Observatory
Physics
Optics
10
Metal Coatings, Mirrors, Reflecting Telescopes, Silver, Spectral Reflectance, Backscattering, Infrared Reflection, Protective Coatings, Technology Assessment
Scientific paper
Silver-based high-reflectance coatings that can withstand the humid and polluted conditions common in the open air have been developed for astronomical telescope optics. The successful designs incorporate a silver reflective layer with a copper underlayer and a stack of dielectric overlayers. Prototypes have been deposited and tested in a controlled environmental chamber and in true operating conditions on Kitt Peak in Arizona. The improved durability, which is due to the copper underlayer, has been investigated with analytical techniques, including Rutherford backscattering.
Jacobson Michael R.
MacLeod Angus H.
Song Dae-Yup
Sprague R. W.
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