Progress toward high-performance astronomical coatings

Andrew C. Phillips; William E. Brown; Brian Dupraw; David F. Hilyard; David J. Cowley

doi:10.1117/12.856499

20 July 2010 Progress toward high-performance astronomical coatings

Andrew C. Phillips, William E. Brown, Brian Dupraw, David F. Hilyard, David J. Cowley

Proceedings Volume 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation; 77393Y (2010) https://doi.org/10.1117/12.856499
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We present an update on efforts at University of California Observatories to develop improved optical coatings for astronomical telescopes and instruments. The main thrust has been in the areas of protected silver mirror coatings and sol-gel based anti-reflection coatings. We report on the performance of silver coatings used for several years in Keck and Lick instruments, as well as that on the Lick 1-m telescope. We discuss process improvements, including use of reactive ion-assisted deposition of oxides. Sol-gel based AR coatings have been exposed to cryogenic environments to test their suitability for IR instruments, with encouraging results. Finally, we describe our plans for future work.

Citation Download Citation

Andrew C. Phillips, William E. Brown, Brian Dupraw, David F. Hilyard, and David J. Cowley "Progress toward high-performance astronomical coatings", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77393Y (20 July 2010); https://doi.org/10.1117/12.856499

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