Progress toward high-performance astronomical coatings
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE2010Vol. 7739, pp. 77393Y–77393Y
Citations Over Time
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.
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