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DOI	10.1016/j.astropartphys.2018.09.001
	Absolute reflectance of a concave mirror used for astro-particle physics experiments
	Mirzoyan, Razmik 1; Arcaro, Cornelia 2,3,4,5; Kellermann, Hanna 6; Garczarczyk, Markus 7
通讯作者	Mirzoyan, Razmik ; Arcaro, Cornelia
来源期刊	ASTROPARTICLE PHYSICS
ISSN	0927-6505
EISSN	1873-2852
出版年	2019
卷号	105 页码:1-12
英文摘要	The absolute reflectance of a reflector and its point spread function are the key parameters of a telescope for measuring light flux. Typically, one is using low-cost technologies for producing mirrors for the needs of astro-particle physics experiments. As a rule, these are operating telescopes in open air conditions at desert or mountainous locations, for cost reasons without protecting domes. The mirrors on such telescopes are exposed to sand in strong winds, precipitation and large temperature variations. Due to weathering, their reflectance is declining within few years. In this report we describe in a great detail the application of an in-situ method to the MAGIC imaging air Cherenkov telescopes for regularly monitoring their absolute reflectance and the point spread function. Compared to similar work that was previously performed, in this report we focus on important details of light losses due to scattering. These allowed us to further refine the method and significantly improve its precision. Also, we report on an in-situ comparison of two mirror types produced with different technologies. (C) 2018 Elsevier B.V. All rights reserved.
英文关键词	Telescopes for gamma-ray astronomy Imaging atmospheric Cherenkov telescopes Spherical mirrors Absolute reflectance
类型	Article
语种	英语
国家	Germany ; Italy ; South Africa
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000451938000001
WOS关键词	REFLECTIVITY
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
WOS研究方向	Astronomy & Astrophysics ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214432
作者单位	1.Max Planck Inst Phys & Astrophys, Fohringer Ring 6, D-80805 Munich, Germany; 2.Univ Padua, Via Marzolo 8, I-35131 Padua, Italy; 3.INFN, Via Marzolo 8, I-35131 Padua, Italy; 4.North West Univ, Ctr Space Res, Potchefstroom, South Africa; 5.INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy; 6.Max Planck Inst Extraterr Phys, Giessenbachstr, D-85741 Garching, Germany; 7.DESY Zeuthen, Platanenallee 6, D-15738 Zeuthen, Germany
推荐引用方式 GB/T 7714	Mirzoyan, Razmik,Arcaro, Cornelia,Kellermann, Hanna,et al. Absolute reflectance of a concave mirror used for astro-particle physics experiments[J],2019,105:1-12.
APA	Mirzoyan, Razmik,Arcaro, Cornelia,Kellermann, Hanna,&Garczarczyk, Markus.(2019).Absolute reflectance of a concave mirror used for astro-particle physics experiments.ASTROPARTICLE PHYSICS,105,1-12.
MLA	Mirzoyan, Razmik,et al."Absolute reflectance of a concave mirror used for astro-particle physics experiments".ASTROPARTICLE PHYSICS 105(2019):1-12.