Please give me some information about horoscope? (English)

In astrology, a horoscope is a chart or diagram representing the positions of the planets, other celestial bodies, and sensitive angles at the time of any event, such as a person's birth. The term horoscope is derived from Greek words meaning "a look at the hours" (horoskopos, pl. horoskopoi, or "marker(s) of the hour.") Other commonly used names for the horoscope in English include natal chart, natus, birth chart, astrological chart, astro-chart, celestial map, sky-map, nativity, star-chart, cosmogram, Vitasphere, soulprint, radical chart, radix or simply chart, among others. It is used as a method of divination regarding events relating to the point in time it represents.


圖片參考：http://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Astrological_Chart_-_New_Millennium.JPG/300px-Astrological_Chart_-_New_Millennium.JPG

Introduction
The horoscope serves as a stylized map of the heavens. In most applications the Earth is placed in the centre (although heliocentric astrology uses the Sun) with various remaining elements around the outside: the planets, the lunar nodes, the ascendant, midheaven, the zodiac and the houses. Then the angles between the planets, called aspects, are determined. Different systems of tri-secting arcs produce houses of different size.
In common usage, the word horoscope often refers to an astrologer's interpretation through a system of sun sign astrology. In particular, many newspapers and magazines carry horoscope columns, describing influences for the placement of the Sun at the time of birth.

Construction of a horoscope
To manually create a horoscope an astrologer first has to ascertain the exact time (adjusting for any daylight savings time or war time in use) and place of the subject's birth or the initiation of an event. This is then translated into Greenwich Mean Time at that same instant, which in turn is translated into the sidereal time at Greenwich. The astrologer will then consult a set of tables called an ephemeris which lists for a particular year, date and sidereal GMT time, the location of all the planets, the Sun and Moon with respect to the northern hemisphere vernal equinox or the fixed stars (depending on which astrological system is being used). The astrologer then uses the time difference between GMT and local time at the place of birth to show where planets would be visible above the horizon at the time and place in question. Planets hidden from view beneath the earth are also shown in the horoscope. Finally a table of houses is used to divide the horoscope into 12 divisions around the circle of the ecliptic starting from the eastern horizon where objects are just rising into view. These are called the houses and numerous systems of calculating these divisions exist.


more informations:
http://en.wikipedia.org/wiki/Horoscope