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Proceedings Paper

Spectrally-quantified chemical reactivity of optical fluids and materials in the GMACS spectrograph for GMT
Author(s): Tyler W. Behm; J. P. Rheault; J. L. Marshall; D. L. DePoy
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Paper Abstract

We present a preview of compatibility tests for index-matching fluids with commonly used optical assembly materials. Although we focus on fluid candidates for GMACS, the results of the conducted experiments are applicable to all instruments that use optical index-matching fluids. The experiment presented here aims to identify potentially corrosive matchings of fluids and materials. In the experiment, a material (RTV, polyethylene, delrin, etc.) is submerged in a quartz cuvette of fluid (Cargille liquids, glycerin, etc.). Contamination is observed by using a spectrometer to measure the absorption spectrum at various post-submersion times. The current results have large measurement errors compared to the signal, and no contamination appears to have taken place. We detail the source of these errors and make suggestions for similar future experiments.

Paper Details

Date Published: 13 September 2012
PDF: 6 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 845042 (13 September 2012); doi: 10.1117/12.925469
Show Author Affiliations
Tyler W. Behm, Texas A&M Univ. (United States)
J. P. Rheault, Texas A&M Univ. (United States)
J. L. Marshall, Texas A&M Univ. (United States)
D. L. DePoy, Texas A&M Univ. (United States)

Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)

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