[Title] The Variations in the Sky Brightness of Lijiang and Namco throughout the Day

• Impact Factor:0.41
• DOI number:10.1016/j.chinastron.2025.09.005
• Teaching and Research Group:天体物理
• Journal:Chinese Astronomy and Astrophysics
• Key Words:telescopes: site testing;astronomical instrumentation；methods: data analysis;techniques: image processing
• Abstract:The sky brightness is an important parameter to evaluate the excellence of a coronal observatory,which directly determines whether the coronagraph can measure and monitor coronal activity for a long time. The Sky Brightness Monitor (SBM) is a precision instrument for accurately measuring atmospheric parameters such as sky brightness,water vapor content,and atmospheric extinction. Using representative datasets from the Lijiang station and the Namco site,this paper analyzes the diurnal variation characteristics of sky brightness and establishes an effective calculation method to reveal its evolution. The results show that both sites exhibit favorable sky brightness conditions,reaching the order of 10×10[−6],ensuring the feasibility of regular coronal observations,with Namco providing a longer effective observing duration than Lijiang.
• Co-author:Liu Y,Song TF,Ren AB,Zhao MY,Zhang XF,Li XB,Zhu FR,Sha FY,Oloketuyi JO,Wang XJ,Duan XM,Luo QW
• First Author:Liu Q
• Document Code:014
• Discipline:Science
• First-Level Discipline:Astronomy
• Volume:66
• Issue:3
• Page Number:18
• ISSN No.:0001-5245
• Translation or Not:yes
• Date of Publication:2025-06-01