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Proceedings Paper

Experiments using First Contact polymer as a final cleaning step for aluminizing
Author(s): Gregory Barrick; Marc Baril; Tom Benedict; Philip Jackson; James Hamilton
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Paper Abstract

Cleaning mirrors for coating is a very exacting process and for larger mirrors it can be physically demanding. The final step of cleaning and drying the substrate is particularly problematic. Non-contact drying methods, usually with compressed air or nitrogen, can be laborious and can introduce contaminants if the compressed gas used is insufficiently pure. These methods also tend to increase the static charge on the substrate surface, attracting lint. Contact methods tend to add lint or fibers to the cleaned surface. As an alternative, we are experimenting with using the First Contact polymer cleaning solution as the final step in mirror coating preparation. The advantage of this method is that the polymer coating, which will adhere to much of the remaining surface contaminants, may be left on the substrate until just before it is placed into the coating chamber, minimizing the time available for re-contamination. The results of our experiments on small substrates are presented.

Paper Details

Date Published: 23 July 2008
PDF: 10 pages
Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70185B (23 July 2008); doi: 10.1117/12.787642
Show Author Affiliations
Gregory Barrick, Canada-France-Hawaii Telescope (United States)
Marc Baril, Canada-France-Hawaii Telescope (United States)
Tom Benedict, Canada-France-Hawaii Telescope (United States)
Philip Jackson, Photonic Cleaning Technologies (United States)
James Hamilton, Photonic Cleaning Technologies (United States)
Univ. of Wisconsin, Platteville (United States)

Published in SPIE Proceedings Vol. 7018:
Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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