The base of astrology is to make a birth chart(natal chart, astrology chart, etc).
In a word, everything starts from making a birth chart in astrology.
A birth chart is chart of the sky in the time and the place.
Time and place is the start of existence that becomes the object of fortune-telling, in a word the subject of a birth chart.
If it is a person, it becomes born time and place.
Opening of store, establishment of enterprise, and establishment of nation, etc.
The existence of all becomes an object.
A birth chart draws the position where the planets and the singular point in the heavenly bodies exist when becoming start of existence, and the lamplight also solves existence from those correlations.
A birth chart is composed of four elements by the sensitive points (planets and asteroids in the solar system, the singular point in the heavenly bodies), zodiac signs (12 constellations), 12 houses, the angle.
A birth chart of 12 constellations is the one based on the sun sign astrology that is one of western astrology.
In a word, a birth chart of 12 constellations foretells a lot from the sun that is one of the sensitive points in a birth chart.
A birth chart of 12 constellations that foretells by only the one sensitive point is a very simple fortune-telling.
Therefore, it is dissatisfied with accuracy.
Meaning that each element of the sensitive point and the constellation and the house individually has, the one led from correlation of each element, meaning of angle that each element composes, more solutions are led by these.
It can approach a true appearance more by drawing an exquisite a birth chart with the App.
The word horoscope is derived from Greek words meaning “a look at the hours”.
The name often used as a horoscope of English is a birth chart.
Other commonly used names in English include natal chart, astrological chart, astro chart, star chart, wheel chart, or simply chart.
Reference to part Wiki