佳作 佳作
日全食與日冕
Solar Eclipse and Corona
作者 | 林聖翰
#天文與氣象
科學圖說 Introduction
日全食期間可觀測到的天文奇景特別多,其中以日冕的觀測為代表,不僅美麗又極富科學性。內層日冕的亮度約與滿月相當,外層日冕的亮度卻只有內層日冕的千分之一,因此日冕觀測的奧義就在於超高的亮度動態範圍,利用高動態範圍進行日冕影像記錄,即為最佳解決方案!此影像經高動態範圍處理後,可清楚觀察到日冕的結構,包含極區冕羽與細長的冕流,右下方還有太陽的日珥,此外,可見當時被地球微弱反光所照射的月球表面。
During a total solar eclipse, it is possible to view many wonders, such as the corona. The brightness of the inner corona exceeds that of the full moon, while the brightness of the outer corona is 1/1000th that of the inner corona. Therefore, the significance of recording it lies in its extremely high dynamic brightness range. Images of the corona were recorded based on this feature. After high dynamic range processing, images clearly revealed the structure of the corona including its feathers and flow. In the lower right corner is the solar prominence. It is also possible to see the moon illuminated by the weak reflection of the earth.

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