[TowerTalk] North? Use the Moon!

Bill Coleman AA4LR aa4lr@radio.org
Tue, 14 Mar 2000 10:27:24 -0500

On 3/13/00 11:40 PM, Jim Reid at kh7m@hsa-kauai.net wrote:

>Look up at the moon.  The line dividing the light and
>the dark of the moon is running exactly N-S!  That
>dividing line is called the "Terminator",  same as
>hear on our world.

While the terminator on the moon is exactly parallel to the terminator on 
the Earth, the terminator only runs north/south twice a year -- the first 
day of spring and the first day of fall.

Measuring shadows at Sidereal (local) noon would appear to be the 
simpliest, most accurate way to locate True North from any location.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr@radio.org
Quote: "Boot, you transistorized tormentor! Boot!"
            -- Archibald Asparagus, VeggieTales

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