Strategy for Successfully Coating a 22” Diameter Mirror for the Keck Telescope with Protected Silver using 6” Sputter Cathodes

Jesse Wolfe; Steve Bryan; Joel Buck; Neil Lund; Dave Sanders; James Ritter

doi:10.1364/OIC.2001.ThD4

Optical Interference Coatings
OSA Technical Digest Series (Optica Publishing Group, 2001),
paper ThD4
•https://doi.org/10.1364/OIC.2001.ThD4

Strategy for Successfully Coating a 22” Diameter Mirror for the Keck Telescope with Protected Silver using 6” Sputter Cathodes

Jesse Wolfe, Steve Bryan, Joel Buck, Neil Lund, Dave Sanders, and James Ritter

Optical Interference Coatings 2001

Banff Canada
ISBN: 1-55752-682-6

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Applications II (ThD)

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J. Wolfe, S. Bryan, J. Buck, N. Lund, D. Sanders, and J. Ritter, "Strategy for Successfully Coating a 22” Diameter Mirror for the Keck Telescope with Protected Silver using 6” Sputter Cathodes," in Optical Interference Coatings, OSA Technical Digest Series (Optica Publishing Group, 2001), paper ThD4.

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Abstract

A durable silver coating with an average reflectance of >94% from 280nm to > 2500 nm was deposited on a 22-inch diameter optic for the Keck Observatory. This paper describes the strategies used to accomplish this using small 6” diameter sputtering cathodes.

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