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Transcript
Finding North and South
Southern Cross
Southern Cross and Pointers
!
!
!
!
Imagine a line drawn through the main axis
of the cross.
Now extend that line 4½ times the length of
the longest axis, extending out from the
furthest star.
A line from this point to the ground will give
you the direction of true south.
!
!
Extend the line from the main axis of the
cross.
Now take the line bisecting the two pointers
and extend it till it intersects with the first
line.
At the intersection point, drop a line directly
to the ground to find true south.
(The point you find in the sky is called the South Celestial Pole. The
stars all revolve around this point during the night. In the northern
hemisphere, the Southern Cross is invisible, but there is a bright star
called the Pole Star at the North Celestial Pole.)
Using a watch
!
!
Face the sun and point the 12 on the watch dial into the sun.
The true north line will lie exactly halfway between the 12 and the
hour hand.
(This works in the southern hemisphere. In the northern hemisphere,
point the hour hand at the sun, and the line halfway between the hour
hand and the 12 will point due south.)
Sunrise / Sunset
!
!
As the sun rises in the east and sets in the west, north can be
found by observing the sun at dawn and dusk.
At dawn, stand with your back to the sun and raise your arms
shoulder height. Your arms will then be pointing north/south
(right = north, left = south)
ScoutWeb South Africa
www.scouting.org.za