This afternoon, a few minutes before sunset, people who live in seven South American countries will have the privilege of being able to observe directly and with good eye protection, the first partial solar eclipse that will have this 2022.
Solar eclipses occur when the new moon crosses the face of the sun from Earth’s perspective. Partial solar eclipses occur when the moon blocks only part of the solar disk. It often looks like the moon has “bitten” or taken a piece of our star.
In this case, about 64% of the solar disk will be hidden as much as possible, as required by the JAR. In the city of Buenos Aires, the maximum concealment will be 25%, while, for example, further south in Bariloche, you will be able to see up to 51% of the sun hidden. In Ushuaia it will be 52%, in Calafate 50%, in Neuquén 36%, in Mendoza 27% and in Salta 12%.
A partial solar eclipse occurs when the Moon is between the Sun and the Earth without covering the entire surface of the terrestrial plane (EFE/Sebastiao Moreira/)
The percentage varies depending on the location of the display. The greatest magnitude will be approximately in South America and the surrounding ocean, according to timeanddate.com, a site that will also follow the event live through a live blog. Also the YouTube channel Gyaan ki gareebi live will initiate a stream at the start of the eclipse.
The moon it will pass in front of the edge of the Sun and will only be visible from Argentina, Chile, Uruguay, southern Peru and Bolivia, western Paraguay and a small region of Brazil. Although the area with the greatest visibility for this event is over the Pacific Ocean, between Antarctica and South America.
Coverage of the April 30 partial solar eclipse
As for the duration of the eclipse, the maximum appreciation of the sun will be 7 minutes, because the concealment process lasts very little. In other words, after a start around 5:30 p.m., the moment when the sun will be seen “halfway” will take place around 6:10 p.m.
“It will be visible from almost all of the Argentine Republic, but the most favored region will be the southwest. From Buenos Aires, it will be visible from 5:45 p.m. until sunset”he explained to Infobae Constantin Baikouzis, astronomy researcher and director of the Parque Astronomico de la Matanza program.
It should be clarified that in the regions of Patagonia will start at 4:46 p.m.when the Sun is near the horizon and the peak will be at 5:57 p.m., approximately. Almost simultaneously with sunset.
How to watch it safely
A man observes the sun through a telescope with special lenses, hours before the start of a solar eclipse in Argentina (EFE/Alberto Valdés)
Despite the excitement that can arise from an event of this magnitude, experts warn that This phenomenon should not be observed without adequate protective elements, such as goggles with special filters..
“May cause retinal burnstissue in which images are processed and then transmitted to the brain. These injuries can range from mild to severe and can even lead to permanent blindness. »underline Infobae Dr Laura TavernaINEBA ophthalmologist.
While, Rogelio Ribes-Escudero, ophthalmologist from the ophthalmology department of the German hospital, added: “The cornea and the lens are two lenses. So, if you look directly at the sunlight, the macula (center of the retina) will be damaged, leading to irreversible damage”.
Unlike what happens with total solar eclipses, in which the Moon completely covers the solar disk and the observer can remove his glasses for a few seconds, in partial eclipses like today’s, they can never be removed from goggles.
In December 2020, a partial solar eclipse could be observed in Buenos Aires (REUTERS / Agustin Marcarian)
In case you have a telescope or binoculars and they don’t have a filter for this event, a tip from the experts is to look for sunlight to pass through them and onto a smooth surface.. In this way, although it is not observed directly, it will be possible to appreciate not only the eclipse, but even some more specific details. If you don’t have the right accessories, you can make a homemade projector.
It should be noted that for telescopes it is recommended to use “low magnification lenses as they produce larger images and generate less heat, thus protecting the instrument”, they advise du Astronomical group of Osirisbased in Patagonia.