Current concepts for cryogenic optical testing of the JWST secondary mirror

被引：1
|
作者：
Smith, KZ [1 ]
Schwenker, JP [1 ]
Brown, RJ [1 ]
Sullivan, JF [1 ]
机构：
[1] Ball Aerosp & Technol Corp, Boulder, CO 80301 USA
来源：
OPTICAL FABRICATION, METROLOGY, AND MATERIAL ADVANCEMENTS FOR TELESCOPES | 2004年 / 5494卷
关键词：
secondary mirror; JWST; cryogenic; optical testing;
D O I：
10.1117/12.554420
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The James Webb Space Telescope (JWST) Secondary Mirror (SM) is a 738mm edge-diameter convex hyperbola that will be operating at 30K. Due to JWST's science and technical requirements, the requirements on the SM are relatively tight. Therefore highly accurate, rigorous cryogenic testing of the surface figure as well as the prescription is required. The optical testing of a convex mirror of this size has not been performed before at cryogenic temperatures. This paper discusses the testing approaches and configurations that are under consideration at Ball Aerospace & Technologies Corp. (BATC) for testing the JWST SM at cryogenic temperatures.
引用
收藏
页码：141 / 151
页数：11
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