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 GeoAstro Applets |
 Astronomy |
 Chaos Game |
 Java |
 Miscel- laneous |
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The yellow circle is the image
point (Geographical Position) of the sun, where the
line from the sun to the center of the earth
intersects it's surface. The coordinates (latitude and
longitude) are the same as the declination and
Greenwich-Hour-Angle (GHA) of the sun. An observer
positioned in the Geographical Position of a star will
see the sun directly in the vertical, above his head.
A click into the map dispays the
coordinates, the shadow of a 50 pixel vertical gnomon,
and the elevation of the sun. 
