2017年08月28日:稍纵即逝的双重日食-(A Fleeting Double Eclipse of the Sun)

2017年08月28日:稍纵即逝的双重日食-(A Fleeting Double Eclipse of the Sun)

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2017-08-28 / 0 评论 / 0 阅读 / 正在检测是否收录...

2017年08月28日:稍纵即逝的双重日食-(A Fleeting Double Eclipse of the Sun)
2017年08月28日:稍纵即逝的双重日食-(A Fleeting Double Eclipse of the Sun)--原图下载


Image Credit & Copyright: Simon Tang
说明: 在上星期不到几分之一秒的期间,太阳发生了二次交食事件。一星期之前的今天,许多位在北美洲的人见到了标准的单纯日偏食;较少数聚在狭窄路径上的人,则体验了黑夜魅异的降临在白画的日全食。而极少数竭尽心力而且拥有速度够快相机的人,甚到捕捉到太同时受到月亮国际太空站(ISS)掩食所产生的双重日食。在地球轨道上的国际太空站不到一秒就越过了日盘,所以为了让ISS的影像不会模糊,相机的曝光时间必需少于1/1000秒。上面这幅主题图片,在国际太空站掠过日盘时,连续记录了多重影像。影像摄于原子发光的特定波段,以突显太阳比常见的光球层要更热更高的色球层

原文:

Image Credit & Copyright: Simon Tang
Explanation: Last week, for a fraction of a second, the Sun was eclipsed twice.One week ago today, many people in North America were treated to a standard, single, partial solar eclipse.Fewer people, all congregated along a narrow path, experienced the eerie daytime darkness of a total solar eclipse. A dedicated few with fast enough camera equipment, however, were able to capture a double eclipse -- a simultaneous partial eclipse of the Sun by both the Moon and the International Space Station (ISS).The Earth-orbiting ISS crossed the Sun in less than a second, but to keep the ISS from appearing blurry, exposure times must be less than 1/1000th of a second.The featured image composite captured the ISS multiple times in succession as it zipped across the face of the Sun.The picture was taken from Huron, California in a specific color emitted by hydrogen which highlights the Sun's chromosphere, a layer hotter and higher up than the usually photographed photosphere.

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