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“月全食”奇观4日傍晚上演 中国所有地区都能欣赏
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Topic: “月全食”奇观4日傍晚上演 中国所有地区都能欣赏 (Read 399 times)
Haslett5236
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“月全食”奇观4日傍晚上演 中国所有地区都能欣赏
April 01, 2015, 10:05:44 PM
#1
新华网天津4月1日电(记者周润健)精彩的“月全食”天象奇观将于4月4日登场。天文专家表示,这次月全食,是继2011年12月10日之后我国观测条件最好的一次。届时,只要天气晴朗,我国几乎所有地区都能欣赏到一轮“红月亮”高挂夜空的迷人景象。
月食分为半影月食、月偏食和月全食3种。地球阴影的中间部分称为本影,本影周围是半影。月亮进入地球半影发生半影月食,月亮一部分进入地球本影发生月偏食,月亮全部进入地球本影则发生月全食。
在这3种月食中,当属月全食最为好看。此时,从地球上看去,月亮并不是从空中消失,而是呈现难得一见的古铜色,也就是大家所说的“红月亮”。
天文教育专家、天津市天文学会理事赵之珩介绍说,一次月全食有初亏、食既、生光、复圆等几个重要时间点。其中初亏是指月面刚开始进入地球本影的时间,标志着月食的开始。食既为月面完全进入地球本影的时间,生光为月面开始移出地球本影的时间,从食既到生光的阶段为月食的全食阶段。复圆为月面完全移出地球本影的时间,也意味着月食的结束。
就本次月全食来说,北京时间4日17时0分,半影月食开始,此刻我国境内无法观测;初亏时刻为18时15分;食既时刻为19时54分;生光时刻为20时6分;复圆时刻为21时45分。其中,最精彩的全食阶段持续12分钟。
这次难得的月全食天象大餐为公众观赏和拍摄提供了宝贵机会。天文专家提醒说,如果想拍摄近处人物与月全食合影的话,可以适当使用闪光灯补光。当然,要想拍摄月全食月面特写,最好能使用带三脚架的能放大几十倍的天文望远镜。
Wei H
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Re: “月全食”奇观4日傍晚上演 中国所有地区都能欣赏
April 02, 2015, 04:29:26 PM
#2
还是日全食比较好看。
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