The Discovery Channel Telescope optical coating system

被引：0
|
作者：
Marshall, Heather K. [1 ,2 ]
Ash, Gary S. [3 ]
Parsley, William F. [3 ]
机构：
[1] Natl Solar Observ, 950 N Cherry Ave, Tucson, AZ 85719 USA
[2] Lowell Observ, Flagstaff, AZ 86001 USA
[3] Dynavac, Hingham, MA 02043 USA
来源：
GROUND-BASED AND AIRBORNE TELESCOPES III | 2010年 / 7733卷
关键词：
optical coatings; aluminization; Discovery Channel Telescope; Dynavac; Lowell Observatory;
D O I：
10.1117/12.856467
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The Discovery Channel Telescope (DCT) is a project of Lowell Observatory, undertaken with support from Discovery Communications, Inc., to design and construct a 4-meter class telescope and support facility on a site approximately 40 miles southeast of Flagstaff, AZ. Lowell Observatory contracted with Dynavac of Hingham, MA to design and build an optical coating system for the DCT optics. The DCT Optical Coating System includes a mechanical roughing pump, two high-vacuum cryogenic pumps, a Meissner trap, evaporative filament aluminum deposition system, LabView software and PLC-based control system, and all ancillary support equipment. The system was installed at the site and acceptance testing was completed in October 2009. The Optical Coating System achieved near perfect reflectivity performance, thickness uniformity of 1000 angstroms +/- 10%, and adhesion conforming to MIL-F-48616, Section 4.6.8.1. This paper discusses the design and analysis of the coating system, the process of transportation and assembly as well as testing results.
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收藏
页数：10
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