The part of the Milky Way where the Southern Cross is located is the brightest part of the Milky Way. At the lower left of the cross of the Southern Cross, there is a dark dust nebula, which is like a dark cave in the Milky Way against the bright background, called "coal bag". Its area is almost as big as the cross, extending to the adjacent Centauri and Fly.
Southern cross constellation position
Center position: right ascension 12: 20, declination -60 degrees. Located between Centauri and Flies, it is the smallest of the 88 constellations in the whole day. The main bright stars in the constellation form a cross, one of which points to the south celestial pole. Because there are no bright stars near the south celestial pole, this cross is no less important in the southern hemisphere than the Beidou in the northern hemisphere. Although the Southern Cross is small, there are many bright stars. Alpha star is a famous bright star in the southern sky and a binary star. The beta star is a second-class star, with seven stars brighter than the fourth-class star.
Southern Cross: the number of bright stars in the 88th place (magnitude < 3) 4 The brightest star cross III (βCru) (apparent magnitude 1. 25)
The main bright stars in the Southern Cross meteor shower constellation: Cross I (γ), Cross II (α), Cross III (β) and Cross IV (δ) form a cross. Because there are no bright stars near the south celestial pole, cross I and cross II are used to indicate the direction-only by extending the distance between them by about 4.5 times is the south celestial pole. So this cross is as important in the southern hemisphere as Beidou in the northern hemisphere.
In addition, the intersection of the middle vertical line connecting Nanmenxing Centauri and Marbury I and the above extension line will also be the south celestial pole.
The coal pocket nebula located in the Milky Way is one of the most striking dark nebulae in the sky, which can be easily seen with the naked eye.
NGC4755, discovered in 175 1 and 52, is another deep-space object of the Southern Cross. Commonly known as "jewelry box",
It is about 7500 light years away from the Earth and contains about 100 stars.
Orion position
Orion has its place in different ancient civilizations, but its image is different. Orion's belt and sword often appear in ancient and modern literary works. During the two world wars, it even became the emblem of the 27th Division of the US Army, probably because the division was under the command of General O 'Ryan.
Orion, one of the zodiac signs. Located between Gemini, Unicorn, Canis Canis, Taurus, Rabbit, Bojiang and Canis Canis, its northern part is immersed in the Milky Way. The main body of the constellation consists of four bright stars, Betelgeuse and Betelgeuse, forming a quadrilateral. It covers an area of 594 square degrees and ranks 26th. Latitude changes can be seen between+85 and 75, and the best observation month is 65438+ 10.