云台太阳光谱仪像质优良的时间分布规律  

The Temporal Distributions of Good Imaging for the Spectroheliograph at the Yunnan Observatory

作　　者：钟树华[1,2] 王琼珍[1,2] 

机构地区：[1]中国科学院云南天文台 [2]中国科学院国家天文观测中心,北京100012

出　　处：《云南天文台台刊》2000年第2期58-64,共7页Publications of the Yunnan Observatoty

摘　　要：通过对云台水平式太阳光谱仪 1 982年太阳光谱观测中的成像质量情况统计分析 ,初步得到光谱仪一年中成像质量优良的时间在秋夏 9月和 8月份 ;一天内有两次像质优良的时间 ,上、下午各有一次 ,分别在日出后 2～ 3小时和日落前 3～ 4小时各有半小时到 1小时左右的时间。The durations of good imaging within a fixed year are preliminarily obtained by statistical analysis of imaging quality obtained from spectral observations in 1982 with the horizontal spectrograph installed at the Yunnan Observatory.The results show that in the Autumn,September and August,a good image is usually available.For a daytime,there are two time intervals during which the solar image is relatively better than other time,one is in the morning 2～3 hours after the Sunrise;another in the afternoon 3～4 hours before the Sunset,and it lasts about 0.5～1.0 hours for each.

关 键 词：太阳像质 时间分布 太阳光谱仪 时间分布规律 

分 类 号：P111.41[天文地球—天文学]