#find North, #finding North, #polar zone, #arctic zone, #Equatorial stars, #Sun.
Finding North in polar regions using Equatorial Stars and the Sun.
The general principles in Finding North still apply for each familiar method. However Finding North direction in polar regions has its own problems and it is not as simple as for temperate zones due to difficulties caused by steep magnetic lines not pointing to rotational poles, by the closeness of the upper Celestial pole to the zenith, by long extended day time, by aurora light, by aurora interference with radio wave receivers in GPS units.
When those familiar methods encounter problems the method of Finding North by Tropical stars and the Sun can still work and maintain its precision.
1. The two polar zones
The two polar zonescover any area with absolute value of latitude higher than 66°33′. That is all their points are…
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