Multi-object fixed delay Michelson interferometer for astronomical observation

Kai Zhang; Yongtian Zhu; Lei Wang; Yi Chen; Liang Wang

doi:10.1117/12.977275

15 October 2012 Multi-object fixed delay Michelson interferometer for astronomical observation

Kai Zhang, Yongtian Zhu, Lei Wang, Yi Chen, Liang Wang

Proceedings Volume 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 84171A (2012) https://doi.org/10.1117/12.977275
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

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.

Citation Download Citation

Kai Zhang, Yongtian Zhu, Lei Wang, Yi Chen, and Liang Wang "Multi-object fixed delay Michelson interferometer for astronomical observation", Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84171A (15 October 2012); https://doi.org/10.1117/12.977275

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