There will be a half-moon eclipse in Vietnam

On December 21, around 17:30 to 18:00, in Vietnam, a half-moon eclipse can be observed in a short time.

Moon really half dark. (Photo: JAXA)

Mr. Dang Vu Tuan Son, Chairman of Vietnam Young Astronomical Club, said that the total 21 lunar eclipse could be observed in North America and part of South America. West, North, Central Europe, East Africa, North and East Asia may observe partial eclipses.

In Vietnam, only the half-moon eclipse (Penumbral lunar eclipse) can be observed around 17:30 to 18:00 before the eclipse of the moon completely ends.

Unlike the full or partial eclipse , the half-dark eclipse is when the Moon has come out of the Earth's shadow to the midnight region, still receiving a portion of normal light, so at this time the Moon dark and red as with a full or partial eclipse that is only darker, redder and has a slightly larger feel.

On the other hand, this phenomenon is quite difficult to observe in Vietnam because 17:30 is also the time when the Moon begins to grow, so during the last 30 minutes of the eclipse, we can only observe when look low down near the eastern horizon. It is almost 18 o'clock that observers in cities that are blocked by sight can see this phenomenon quite well.

According to Mr. Son, eclipse is a completely harmless phenomenon, observers can see with the naked eye, both through binoculars, telescopes or cameras are both and if you want to observe the Moon through a telescope or binoculars, this is also a good occasion because the moon light will be dimmer than usual without causing glare, so the image will be more visible, some photos of this phenomenon will be quite interesting.