NASA每日一图 ·

美国国家航空航天局NASA每日一图(天文)-2017年8月13日(日光电晕  )

2017 August 13

Detailed View of a Solar Eclipse Corona 
Image Credit & Copyright: Miloslav Druckmüller (Brno U. of Tech.), Martin Dietzel, Peter Aniol, Vojtech Rušin
Explanation: Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible. Normally overwhelmed by the bright solar disk, the expansive corona, thesun's outer atmosphere, is an alluring sight. But the subtle details and extreme ranges in the corona's brightness, although discernible to the eye, are notoriously difficult to photograph. Pictured here, however, using multiple images and digital processing, is a detailed image of the Sun's corona taken during the 2008 August total solar eclipse fromMongolia. Clearly visible are intricate layers and glowing caustics of an ever changing mixture of hot gas and magnetic fields. Bright looping prominences appear pink just above the Sun's limb. A similar solar corona might be visible through clear skies in a thin swath across the USA during a total solar eclipse that occurs just one week from tomorrow.


图像信息的 详细视图和版权所有:MiloslavDruckmüller (Brno U. of Tech。),Martin Dietzel,Peter Aniol,VojtechRušin
说明: 只有在全日蚀的瞬间黑暗中,太阳能电晕的光线才容易被看见。通常被明亮的太阳能光盘所淹没, 广泛的电晕, 太阳的外部气氛,是一个诱人的视线。但是,电晕亮度的微妙细节和 极致范围,尽管可以看出,但是很难拍摄。 图为,然而,使用多个图像和数字化处理,是在拍摄的太阳日冕的详细图像 2008年8月总 日食从 蒙古。 清晰可见的是热气和磁场的不断变化的混合物的复杂层和发光的焦散 。明亮的圆形突起 在太阳的四肢上方出现粉红色 。在距离明天只有一个星期的全日食期间 ,在美国的薄条纹中,透明的天空 可以看到类似的太阳能电晕 。