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KEPLER'S
SKY MAP: You
can view a circular representation of the sky that was above the horizon,
and another circular representation of the sky below the horizon. These
circular representations give a fairly accurate image of how the sky
actually looked. Because the computer screen and a piece of paper are
in 2 dimensions and the stars in the sky are placed like lights inside
a sphere, any representation on the computer screen or on a piece of
paper is not completely accurate, but viewing the sky in 2 circular
halves gives a rough approximation. You can also view the sky in a
rectangular coordinate graph as well. You can also view the planets
from the perspective of the ecliptic plane or equatorial plane, as
well as the horizon plane. The ecliptic, equatorial, and horizon planes
are also drawn in these Sky Maps, giving you a picture of how planets
and fixed star positions vary depending on the coordinate system you
use. |
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