Watch out for the extraordinary eclipse in the Spanish sky: it can be seen in the morning

It is not necessary to get up early or stay until the wee hours of the morning to see this exceptional astronomical event. Of course, avoid looking directly at the sun. We propose a series of recommendations for your observation to be safe.


During the morning of Thursday, June 10, 2021, it will be possible to observe a partial eclipse of the Sun from different points of Spanish geography. The Sun will be partially hidden when the Moon interposes between the Sun and the observer and the maximum overlap is calculated to occur, according to the National Astronomical Observatory (OAN), at 11:40 am for Madrid.


Since eclipses require the almost perfect alignment of the three stars, they occur very seldom throughout the year. The last partially visible solar eclipse in Spain took place on August 21, 2017, and the next, also partial, is expected to occur on October 25, 2022, in the northeast of the peninsula and the Balearic Islands. It will not be for another five years, specifically until August 12, 2026, when a total visible eclipse will be seen. In practice, the number of eclipses that occur each year is between 4 and 7, including those of the Sun and Moon, but not all of them can be seen as easily as this time.


Don't look directly at the sun


The National Astronomical Observatory has published a series of recommendations to ensure safe observation. First of all, you should not look directly at the Sun, nor with sunglasses. During a partial eclipse, the Sun is never completely covered by the Moon and therefore looking at it without safe and adequate protection can damage the eyes, as would happen on any given day when there is no eclipse, they clarify. Neither with telescopes or electronic devices such as cameras.


Ideally, you should use approved disposable eclipse glasses made of cardboard that reduce sunlight by a factor of more than 30,000 times. They can be purchased at most opticians and it is not recommended to be used with optical devices, although they can be superimposed on the usual prescription glasses.


The National Geographic Institute of Spain and CNIG will broadcast live the partial eclipse of the Sun through observations with a telescope located at the National Astronomical Observatory in Madrid. The broadcast will be made between 10:30 and 12:40 hours (official peninsular time), provided that the weather conditions allow it and can be viewed at this link.


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