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Friday, July 27, at 9:36 pm, the moon should rise slowly over the Rouen metropolis. Exceptionally, the earth will pbad between the sun and the moon, casting a shadow on it. It will be the longest total lunar eclipse of this 21st century. Our satellite will indeed, 1 h 42 min and 57 seconds, or almost 103 min, to cross the cone of shadow of our planet. Pbading through the center of the Earth's shadow zone, the natural satellite will momentarily be reddish in color. An astronomical phenomenon called "red moon"
The eclipse will be visible throughout the territory. In our metropolis, it will be necessary, advises Gerard Pitrou, president of the Fridays of the astronomy, " benefit from a cleared South-East ". In the city, the operation may be a little more complicated than in the countryside.
Visible to the naked eye and binoculars
In Rouen, the astronomical observatory will be closed Friday. " The view will be compromised by the roofs of buildings in the southeast ", explains Roger Marical, vice-president of the badociation. " A small team of the badociation will look at the phenomenon on a plateau at Mesnil-Raoul with binoculars and a large telescope. » He hopes that " the weather will be perfect " and advises, for example, an installation on the side of the panorama of Mont-Saint -Aignan, near the restaurant U.
President of the observatory, Éric Mandon specifies that " we can see, in addition to the lunar eclipse, the Mars planets and Saturn, and with a telescope, Jupiter and Venus. This eclipse is safe, unlike solar eclipses. The amateurs will be able to view the phenomenon with binoculars, without any problem ".
On average, there are seven eclipses of moon and sun per year, partial or total, the total being well sure more rare. The last total lunar eclipse visible in Rouen dates back to September 2015. It lasted only a few minutes. " Eclipses reproduce according to the cycle of Saros, explains Eric Mandon. This is a periodicity of eighteen years and eleven days, which means that the lunar eclipse of 27 July will be visible again in August 2036 in the same configuration. »
The next total lunar eclipse will take place on January 21, 2019, in the second half of the evening.
The Rouen Observatory will not open its doors next Friday, it will be revenge opened on August 4, for the Night of the Stars. The reception of the amateurs will be made from 21 h 30 and the observation will be able to last, on a clear day, until one o'clock in the morning.
On October 6, the site will welcome in conference Sébastien Renaux-Pétel, CNRS researcher at the Institute of Astrophysics of Paris on the theme of " Cosmological Inflation " .
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