扭曲的日出带食

2023年10月9日

A Distorted Sunrise Eclipse
Image Credit & Copyright: Elias Chasiotis

Explanation: Yes, but have you ever seen a sunrise like this? Here, after initial cloudiness, the Sun appeared to rise in two pieces and during a partial eclipse in 2019, causing the photographer to describe it as the most stunning sunrise of his life. The dark circle near the top of the atmospherically-reddened Sun is the Moon — but so is the dark peak just below it. This is because along the way, the Earth’s atmosphere had a layer of unusually warm air over the sea which acted like a gigantic lens and created a second image. For a normal sunrise or sunset, this rare phenomenon of atmospheric optics is known as the Etruscan vase effect. The featured picture was captured in December 2019 from Al Wakrah, Qatar. Some observers in a narrow band of Earth to the east were able to see a full annular solar eclipse — where the Moon appears completely surrounded by the background Sun in a ring of fire. The next solar eclipse, also an annular eclipse for well-placed observers, will occur this coming Saturday.

APOD editor to speak: in Houghton, Michigan on Thursday, October 12 at 6 pm

Tomorrow’s picture: hidden in Orion

扭曲的日出带食
影像提供与版权: Elias Chasiotis

说明: 你看过这种模样的日出吗？在当地的乌云散开之后，日偏食期间的东升太阳，看似裂成二片升起，而据摄影者之言，这是他这辈子看过最令人瞠目结舌的日出。被大气红化的太阳上缘之黝黑缺口是月亮，而下缘的圆突峰也是月亮。造成这种景观的缘由，是视线方向的地球大气恰好有逆温层，其作用酷似庞大的透镜，造就了第二重影像。对比于寻常的日出或日落，这种罕见的大气光学现象称为伊特拉斯坎花瓶效应。这幅主题影像，是于2019年12月在卡塔尔的沃克拉所拍摄的。当时位在地球东半球一道狭窄区域内的人们，有幸见到月盘完全镶在日盘里，形成称为火之环的日环食景观。下星期六对位在食带里的人们来说，即将发生的日食事件也是日环食。

APOD编辑发言: 10月12日星期四下午6点在密歇根州霍顿

明日的图片: hidden in Orion