понедельник, 1 июля 2019 г.

2019 July 1 The Big Corona Image Credit & Copyright: P….


2019 July 1


The Big Corona
Image Credit & Copyright: P. Horálek, Z. Hoder, M. Druckmüller, P. Aniol, S. Habbal / Solar Wind Sherpas


Explanation: Most photographs don’t adequately portray the magnificence of the Sun’s corona. Seeing the corona first-hand during a total solar eclipse is unparalleled. The human eye can adapt to see coronal features and extent that average cameras usually cannot. Welcome, however, to the digital age. The featured central image digitally combined short and long exposures that were processed to highlight faint and extended features in the corona of the total solar eclipse that occurred in August of 2017. Clearly visible are intricate layers and glowing caustics of an ever changing mixture of hot gas and magnetic fields in the Sun’s corona. Looping prominences appear bright pink just past the Sun’s limb. Faint details on the night side of the New Moon can even be made out, illuminated by sunlight reflected from the dayside of the Full Earth. Images taken seconds before and after the total eclipse show glimpses of the background Sun known as Baily’s Beads and Diamond Ring. Tomorrow, a new total solar eclipse will be visible from parts of South America.


∞ Source: apod.nasa.gov/apod/ap190701.html


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