so lets use two points in Australia. we all know people live their dont we? so two people standing looking south with their backs to the north looking at the crux at the same point.in the sky. as you can see on a flat earth this is not possible the lines that show where they are looking do not converge on the single point instead they diverge away from each other. any answers?
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Unlike Polaris in the North, the Southern Cross is not over the South pole.
There are three ways to locate due south using the Southern Cross:
1. Draw an imaginary line from the top of the cross to the bottom and extend it 4.5 times. Drop a vertical line from this point, which is the South Celestial Pole (SCP), to the horizon – that place is due south.
2. Extend an imaginary line from the dimmer of the two Pointers to a lone bright star called Achernar. The South Celestial Pole is about halfway along this line. Locate south by dropping a vertical line from the South Celestial Pole to the horizon.
3. Imagine a line connecting the Pointers. Midway along this line, extend another line at a right angle to it, until it meets another line drawn down the long axis of the Southern Cross. The meeting place is the approximate location of the South Celestial Pole. Locate south by dropping a vertical line from here to the horizon.
Please learn some astronomy before rushing to the forum again with crazy wide eyed theories about where South should be using a constellation.