Cryogenic optical performance verification methods for optical components, coatings and optical systems
conference paper
NOVA-ASTRON has delivered a suite of cryogenic astronomical instruments for large ground based telescopes as well as space missions. The instruments include polarimeters, spectrometers, cameras and interferometers, mostly operating at infrared. Several methods have been developed to verify or measure, under cryogenic conditions, the performance of optical components, coatings and complete optical systems. The test and verification setups presented in this paper include wave front error measurements, alignment inspection, spectral measurements, material properties determination and varying gravity orientation capabilities (gravity load vector). The measurement principles are explained, together with the most important error contributions and the achieved accuracies.
TNO Identifier
842149
ISSN
0277786X
ISBN
9781510616158
Publisher
SPIE
Article nr.
1056349
Source title
International Conference on Space Optics, ICSO 2014, La Caleta, Tenerife, Canary Islands, 7-10 October 2014
Editor(s)
Sodnik, Z.
Cugny, B.
Karafolas, N.
Cugny, B.
Karafolas, N.
Collation
9 p.
Files
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