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Using a New Sky Brightness Monitor to Observe the Annular Solar Eclipse on 15 January 2010
Liu Y(刘煜); Shen YD(申远灯); Zhang XF(张雪飞); Liu NP(刘念平); Liu, Y (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
Source PublicationSOLAR PHYSICS
2012-08
Volume279Issue:2Pages:561-572
DOI10.1007/s11207-012-0012-y
Contribution Rank第1完成单位
Indexed BySCI
KeywordAtmospheric Extinction Earth's Atmosphere Instrumental Effects
AbstractFor the future development of Chinese Giant Solar Telescope (CGST) in Western China, a new sky brightness monitor (SBM) has been produced for the site survey for CGST. To critically examine the performance and sensitivity of SBM, we used it in the observation of the annular solar eclipse in Dali City, Yunnan, on 15 January 2010. The observation met good weather conditions with an almost clear sky during the eclipse. The SBM measurement translates into the solar illuminance changes at a level of 2.4x10(-4) I s(-1) during the eclipse. The time of the minimal sky brightness in the field of view (FOV) is found consistent with the time of maximum eclipse. Two local sky regions in the FOV are chosen to make a time series of the calibrated skylight profiles. The evolution of the sky brightness thus calibrated also shows good consistency with the eclipse, particularly between the second and the third contacts. The minimal sky brightness in each local sky region took place within half a minute from the corresponding predicted contact time. Such small time delays were mainly caused by occasional cirri. The minimal sky brightness measured during the eclipse is a few millionths of I (aS (TM)) with standard deviation of 0.11 millionths of I (aS (TM)). The observation supports that the single-scattering process (optically thin conditions) is the main contributor to the atmospheric scattering. We have demonstrated that many important aerosol optical parameters can be deduced from our data. We conclude that the new SBM is a sensitive sky photometer that can be used for our CGST and coronagraph site surveys.
Funding OrganizationNatural Science Foundation of China [10933003, 11078004, 11073050] ; National Key Research Science Foundation [MOST 2011CB811400]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0038-0938
URL查看原文
Archive Date2012-12-11
WOS IDWOS:000306440800015
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7180
Collection选址与日冕观测组
Corresponding AuthorLiu, Y (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
AffiliationNational Astronomical Observatories/Yunnan Astronomical Observatory, CAS, Kunming, 650011, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu Y,Shen YD,Zhang XF,et al. Using a New Sky Brightness Monitor to Observe the Annular Solar Eclipse on 15 January 2010[J]. SOLAR PHYSICS,2012,279(2):561-572.
APA Liu Y,Shen YD,Zhang XF,Liu NP,&Liu, Y .(2012).Using a New Sky Brightness Monitor to Observe the Annular Solar Eclipse on 15 January 2010.SOLAR PHYSICS,279(2),561-572.
MLA Liu Y,et al."Using a New Sky Brightness Monitor to Observe the Annular Solar Eclipse on 15 January 2010".SOLAR PHYSICS 279.2(2012):561-572.
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