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Astroearth - by CMoreStars

The Southern Cross Constellation

March 24th 2008 14:05
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Photo of the constellation Southern Cross taken from my back yard


The Southern Cross is a distinctive constellation consisting of several bright starsin the shape of a cross , (depending on your imagination). This particular constellation is perhaps the most popular constellation for people in Australia and is a symbol on our flag going back in our history. Shares close ties with the Eureka Stockade Flag ( this flag was used during the uprising in Ballarat, Victoria, in 1854).

The brightest is Alpha Cruxis (magnitude of 1.1), which is actually three stars in proximity. One of the stars is about 650 times as bright as our Sun and another is almost 1,000 times as bright. Beta Crusis (magnitude 1.5) is a blue coloured star, and Gamma Cruxis, at the head of the cross, is an orange looking second magnitude star.
The star on the right-most corner on the cross (Delta Cruxis) is the faintest of the four (third magnitude). Perhaps only the magnificent Orion has three bright stars that appear to be so close to each other. The Southern cross is perhaps the easiest constellation to find in our night sky. The best time to look is when there is no moon. You can find the Southern Cross by looking due south around 8.00 pm ( Eastern Australian daylight time)
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2 Comments. [ Add A Comment ]

Comment by Lilla

March 25th 2008 03:11
Carl Can,

...a very long story ... but I can remember a time when i finally managed to 'make the plane' after thinking I never would and probably die... and ...finally seeing the Southern Cross through the window made me cry for a full hour... I have to say that I have seen this constellation as one of the most beautiful to grace the night sky, ever since!

Is it true that if you disect the two outer east/west by some formula to the bottom pointer, you can accurately get the durection for absolute south, or was that the same as the Drop Bears of the Blue Mountains, strictly reserved for immigrants?

Lilla ...

Comment by CarlCan

March 25th 2008 05:36
Hi Lilla,
I guess this constellatin is very special for me as well, it is the very first constellation I remember seeing from a very young age, and that was many years ago now.

For me the Southern Cross and Orion are my two favourite constellations.

The direction of the Southern points to the south celestial pole. It is not a true bearing for due south but it is close enough to get a fix as to where you are.




Carl

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