兴隆观测基地的大气色散实测研究
发布时间：2018-10-05 16:49
【摘要】：大气色散会影响高分辨率成像、测光和光谱观测的质量。利用国家天文台兴隆观测基地80 cm望远镜获得了四个波长范围和五个天顶距的大气色散实测值,波段范围为360~440 nm、360~550 nm、360~640 nm和360~790 nm,天顶距分别为59.8°、57.6°、48.1°、47.8°和36.4°。讨论了实验过程中的四种主要误差来源,测量精度约为0.6″。根据观测时的天顶距、温度、湿度和气压等数据,结合大气折射模型计算了观测当时的理论大气色散值,与实测值进行了对比分析,结果基本吻合。对大气色散的影响因素和大气色散对高精度天文观测的影响进行了探讨,为大口径高精度天文观测提供了减小大气色散影响的方法。大气色散实测和理论计算结果表明:该方法可获得较高精度的大气色散值;大气色散对大口径望远镜的高精度天文观测影响较大,需要根据观测目的采用辅助设备来减小大气色散的影响。
[Abstract]:Atmospheric dispersion affects the quality of high resolution imaging, photometry and spectral observations. The atmospheric dispersion measurements of four wavelength ranges and five zenith distances have been obtained by using the 80 cm telescope at Xinglong observation Base of the National Observatory. The band ranges from 360 to 440 nm,360~550 nm,360~640 nm and 360 nm, to 790 nm, are 59.8 掳/ 57.6 掳/ 48.1 掳/ 47.8 掳and 36.4 掳/ 36.4 掳, respectively. Four main sources of errors in the experiment are discussed. The measuring accuracy is about 0.6 ". Based on the data of zenith distance, temperature, humidity and atmospheric pressure, the theoretical atmospheric dispersion values at the time of observation are calculated with the atmospheric refraction model. The results are in good agreement with the measured values. The influence factors of atmospheric dispersion and the influence of atmospheric dispersion on high-precision astronomical observation are discussed, which provides a method to reduce the influence of atmospheric dispersion for large-aperture and high-precision astronomical observation. The measured and theoretical results of atmospheric dispersion show that this method can obtain high precision atmospheric dispersion values, and that atmospheric dispersion has a great influence on high-precision astronomical observations of large aperture telescopes. It is necessary to use auxiliary equipment to reduce the influence of atmospheric dispersion according to the purpose of observation.
【作者单位】： 中国科学院软件研究所天基综合信息系统重点实验室;中国科学院国家天文台光学天文重点实验室;
【基金】：国家自然科学基金(11303042)
【分类号】：P111.23
本文编号：2254132
[Abstract]:Atmospheric dispersion affects the quality of high resolution imaging, photometry and spectral observations. The atmospheric dispersion measurements of four wavelength ranges and five zenith distances have been obtained by using the 80 cm telescope at Xinglong observation Base of the National Observatory. The band ranges from 360 to 440 nm,360~550 nm,360~640 nm and 360 nm, to 790 nm, are 59.8 掳/ 57.6 掳/ 48.1 掳/ 47.8 掳and 36.4 掳/ 36.4 掳, respectively. Four main sources of errors in the experiment are discussed. The measuring accuracy is about 0.6 ". Based on the data of zenith distance, temperature, humidity and atmospheric pressure, the theoretical atmospheric dispersion values at the time of observation are calculated with the atmospheric refraction model. The results are in good agreement with the measured values. The influence factors of atmospheric dispersion and the influence of atmospheric dispersion on high-precision astronomical observation are discussed, which provides a method to reduce the influence of atmospheric dispersion for large-aperture and high-precision astronomical observation. The measured and theoretical results of atmospheric dispersion show that this method can obtain high precision atmospheric dispersion values, and that atmospheric dispersion has a great influence on high-precision astronomical observations of large aperture telescopes. It is necessary to use auxiliary equipment to reduce the influence of atmospheric dispersion according to the purpose of observation.
【作者单位】： 中国科学院软件研究所天基综合信息系统重点实验室;中国科学院国家天文台光学天文重点实验室;
【基金】：国家自然科学基金(11303042)
【分类号】：P111.23
【相似文献】
相关期刊论文 前3条
1 徐文莉;王亚男;;三种2°视场消大气色散主焦点改正器[J];天文学报;1993年02期
2 孙爱群,胡景耀;大气折射对大视场多目标光纤光谱观测的影响[J];天体物理学报;1997年02期
3 ;[J];;年期
，本文编号：2254132
本文链接：https://www.wllwen.com/kejilunwen/tianwen/2254132.html
