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Hi Richard,
exciting huh?
I find the easiest way to work azimuth is find north (midday sun is north), and then work from there. 139 is 139 degrees from north clockwise, so if you face north it will be past your right shoulder. An outstretched hand at arms length is about 20 degrees, so get east and go 2 1/2 handspans. It is actually about SE.
I have an idea that most software programs will accept alt and azimuth co-ordinates as well.
Good luck,
Gary BEAL,
New Zealand
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