帮助 关于我们

返回检索结果

长期视宁度监测DIMM系统设计方案
A Design of a DIMM System for Long-Term Seeing Measurement

查看参考文献15篇

文摘 视宁度参数r_0是现代天文选址中需要测量的一个重要物理量,而差分像视宁度监测仪(Differential Image Motion Monitor,DIMM)是目前普遍采用的测量视宁度参数r_0的天文仪器。详细介绍了可进行长期视宁度监测的DIMM系统的设计方案,重点讨论了目标星指向、自动导星、自动测量和数据保存等部分。长期视宁度监测DIMM系统的部署,有助于分析已选站址或候选站址的本征视宁度,评价一个站址的成像质量。
其他语种文摘 The Fried(or seeing) parameter r0 is very important in modern site surveys,and a DIMM(Differential-Image Motion Monitor) is a general-purpose equipment to measure r_0.We introduce a design of a remote-control DIMM system in detail,including target-star pointing,automatic guiding,automatic measurement,data storage,and etc.Employing a DIMM system to monitor long-term seeing will be helpful to find the intrinsic site seeing for a checked or candidate site,and to evaluate the imaging quality.We use a 12″ telescope—Meade LX200GPS for measuring the atmospheric seeing.With conventional methods we would have to manually adjust the telescope pointing for tracking the target during the measurement,as the tracking accuracy of the small telescope is not excellent.However,we often need to observe a bright star for several hours for r_0 and to keep the target in the field of view of the CCD.We adopt a more effective method,i.e.to install a guide camera for the telescope.For our remote DIMM system we choose the LPI as the guide camera(instead of DSI or others) and the Guider Master as our guiding software,which leads to a very good performance.Through the Remote Desktop Protocol or VNC,the system acquires a remote observation mode,which brings about many advantages for long-term seeing measurement.In addition,the system is capable of real time processing of images,which are recorded at a rate of 250 frames per 10 seconds with the exposure time of 8 miliseconds per frame.In this way we can measure nearly six sets of r_0 values per minute.In the night of April 9,2011 we measured the seeing at the Phoenix Mountain,Kunming using our DIMM system,and obtained the r_0 curve from 20 ∶ 50 to 2 ∶ 30.We also obtained the FWHM values of stellar images(for targets not identical to those for the DIMM) of the 1m telescope of the Yunnan Observatory.We find a good correlation between the seeing values measured by the DIMM and the FWHM values measured by the 1m telescope.This indicates that our DIMM system is a successful design for long-term seeing measurement.
来源 天文研究与技术 ,2012,9(4):397-404 【扩展库】
关键词 视宁度 ; DIMM ; 自动导星 ; 本征视宁度
地址

中国科学院云南天文台, 中国科学院天体结构与演化重点实验室, 云南, 昆明, 650011

语种 中文
ISSN 1672-7673
学科 天文学
基金 云南省基础研究面上项目
文献收藏号 CSCD:4641360

参考文献 共 15 共1页

1.  Fried D L. Statistcs of a geometric representaion of wave front distortion. Journal of the Optical Society of America,1965,55(11):1427-1435 被引 39 次    
2.  Fried D L. Limiting resolution looking down through the atmosphere. Journal of the Optical Society of America,1966,56(3):1380-1384 被引 24 次    
3.  Kolmogorov A N. The local structure of turbulence in incompressible viscous fluid for very large reynolds numbers. Mathematical and Physical Sciences,1991,434(1890):9-13 被引 6 次    
4.  Tatarski V I. Wave propagation in a turbulent medium,1961 被引 28 次    
5.  Tatarski V I. The effect of the turbulent atmosphere on wave propagation,1971 被引 1 次    
6.  Sarazin M. The ESO different image motion monitor. Astronomy and Astrophysics,1990,227(1):294-300 被引 56 次    
7.  Barker Edwin S. Determination of the intrinsic site seeing for the hobby-eberly telescope. Proceedings of SPIE,2003,4837:225-236 被引 1 次    
8.  Fumihiro Uraguchi. The DIMM station at subaru telescope. Proceedings of SPIE,2006,6267:1-10 被引 1 次    
9.  向守平. 天体物理概论,2008 被引 3 次    
10.  Cox Arthur N. Allen’s astrophysical quantities,2000:388-389 被引 1 次    
11.  杨大卫(译). 天体物理方法,2009 被引 1 次    
12.  刘忠. 差分像运动视宁度测量实验. 云南天文台台刊,1993(4):22-30 被引 4 次    
13.  谭徽松. 用DIMM测视宁度的几个问题. 云南天文台台刊,2002(1):38-46 被引 5 次    
14.  Soules D B. Exposure time effects on differential r_0 measurement. Publications of the Astronomical Society of the Pacific,1996,108:817-827 被引 3 次    
15.  Skidmore Warren. Thirty meter telescope site testing V: seeing and isoplanatic angle. Publications of the Astronomical Society of the Pacific,2009,121:1151-1166 被引 5 次    
引证文献 2 篇

1 辛玉新 丽江站台址信息监测系统 天文学进展,2017,35(3):367-380
被引 2 次

2 胡平 南山站的光学观测环境监测与分析 天文研究与技术,2017,14(4):495-501
被引 2 次

显示所有2篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

iAuthor 链接
辛玉新 0000-0003-1991-776X
范玉峰 0000-0002-5210-2987
伦宝利 0000-0002-1714-2094
版权所有 ©2008 中国科学院文献情报中心 制作维护：中国科学院文献情报中心
地址：北京中关村北四环西路33号 邮政编码：100190 联系电话：(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号