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Proceedings Paper

Multi-object fixed delay Michelson interferometer for astronomical observation
Author(s): Kai Zhang; Yongtian Zhu; Lei Wang; Yi Chen; Liang Wang
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Paper Abstract

Optical interferometry isn’t only widely applied into optical workshop, but also makes great contribution in astronomical observation. A multi-object fixed delay Michelson interferometer commissioned to search extra-solar planet (exoplanet) is introduced here. Fixed delay of 1.9mm, which is good for stellar radial velocity measuring precision, is obtained by two interference arms with different materials. This configuration has different refractive indexes and physical characteristics so that supplies wider field of view and better thermal stability. In addition, compact interference component with three glued prisms and smart structure are the other important features. Because of vibration influence, the combination among the prisms is a direct and effective method. And the reason why make the structure as small as possible is of central obscuration under the workspace of interferometer.

Paper Details

Date Published: 15 October 2012
PDF: 8 pages
Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84171A (15 October 2012); doi: 10.1117/12.977275
Show Author Affiliations
Kai Zhang, Nanjing Institute of Astronomical Optics & Technology (China)
Yongtian Zhu, Nanjing Institute of Astronomical Optics & Technology (China)
Lei Wang, Nanjing Institute of Astronomical Optics & Technology (China)
Yi Chen, Nanjing Institute of Astronomical Optics & Technology (China)
Liang Wang, National Astronomical Observatories (China)


Published in SPIE Proceedings Vol. 8417:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Libin Xiang; Sandy To, Editor(s)

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