Image field deformation of LAMOST due to differential atmospheric refraction

	Image field deformation of LAMOST due to differential atmospheric refraction
	Li, Jin-Ling; Zhang, Bo; Yu, Yong; Qi, Zhao-Xiang; Zhao, Ming
刊名	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2006
卷号	6 期号:4 页码:495-502
关键词	telescopes atmospheric effects methods : analytical methods : statistical astrometry
英文摘要	A vectorial expression of the image field deformation of LAMOST due to the differential atmospheric refraction is presented. The calculated results are compared with those from previous analyses based on the traditional spherical trigonometric formulas. It is demonstrated that different tangential displacements of star images during the observation tracking given by various authors are simply due to different reference points adopted. It is pointed out that the observational celestial pole is the center of the apparent diurnal motion, that, by referring to the observational celestial pole, the effect of the differential refraction on the image field of LAMOST during the 1.5-hour tracking period is approximately equivalent to a constant rotation of - 13.65" for all declination belts. It is therefore unnecessary to design a particular tracking velocity for each observation, and this will be obviously advantageous to the observation implementation. If the maximum tracking error of the fibers is 0.2", then the fibers are required to be able to re-position during observational tracking for sky regions south of declination +20 degrees and north of declination +60 degrees.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
收录类别	SCI
语种	英语
WOS记录号	WOS:000239902800013
公开日期	2010-07-30
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/10756]
专题	上海天文台_天文地球动力学研究中心
作者单位	Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Li, Jin-Ling,Zhang, Bo,Yu, Yong,et al. Image field deformation of LAMOST due to differential atmospheric refraction[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2006,6(4):495-502.
APA	Li, Jin-Ling,Zhang, Bo,Yu, Yong,Qi, Zhao-Xiang,&Zhao, Ming.(2006).Image field deformation of LAMOST due to differential atmospheric refraction.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,6(4),495-502.
MLA	Li, Jin-Ling,et al."Image field deformation of LAMOST due to differential atmospheric refraction".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 6.4(2006):495-502.