Azimuth
a clockwise arc of the horizon
measured from a fixed point
(usually true north) to the
intersection of a vertical circle
that arises from the horizon and
passes through the center of an
object (usually elevated in the
sky). Azimuth is measured in
degrees. The sun would have an
azimuth of 0f 90 degrees if it
rises on a morning when it is due
east. As it rises, its elevation
would increase and its azimuth
would increase. As the sun sets
its elevation would decrease and
its azimuth would continue to
increase.
Elevation is the amount of
degrees above the horizon. An
object on the horizon has zero
degree elevation.
Zenith
is the highest point that a
celestial object reaches as it is
observed in the sky.
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