The US National Science Foundation (NSF) has summed up the results of the first months of operation of the largest ground-based telescope for observing the Sun – the Solar Telescope. Daniel Inouye (Daniel K. Inouye Solar Telescope, DKIST) with a mirror with a diameter of 4.24 m. In honor of this, two impressive images of the star were published, the likes of which have not yet been obtained before.
The first image captures the chromosphere of the Sun – the outer shell of a star, which is very problematic to observe from the Earth’s surface due to the strong radiation of the photosphere, the lower layer of the star’s atmosphere. You can see the chromosphere during a solar eclipse when the moon blocks the bright light of a star. This image shows an area 82,500 km across. The picture was taken on June 3rd.
The second image reveals the appearance of the Sun’s chromosphere in more detail. It shows many so-called “granules”, the width of each of which is from 500 to 1500 km. This picture was also taken while observing the Sun on June 3rd.
Due to the high spatial resolution and high sensitivity, the DKIST telescope is able to distinguish relatively small details in the solar photosphere. Due to this, scientists can closely monitor coronal mass ejections, as well as determine the strength and direction of the magnetic field in the chromosphere and corona of the star.
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