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An analysis of the observed contrast of solar surface granulation |
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| Authors: | Rao Chang-hui Jiang Wen-han Ling Ning Jacques M Beckers |
| Institution: | a Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209 China b National Solar Observatory, U.S.A. |
| Abstract: | The contrast of the solar surface granulation detected in the focal plane of the observing system as well as its relations with the aperture of the observing system, the coherent length of atmospheric turbulence and the sensitivity of the detecting system are analyzed. The results of numerical calculation of the granulation contrast as functions of aperture, coherent length of atmospheric turbulence and sensitivity of the detecting system are presented. Results of a related observation are also given. |
| Keywords: | solar surface granulation—contrast—atmospheric coherent length—optical transfer function |
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