Equatorial Coordinate System

Equatorial Coordinate System

2023-12-052019-06-19

Celestial coordinate system A celestial sphere is an abstract sphere centered on an observer. All objects in the sky can be conceived as projected upon the celestial sphere’s inner surface. Equatorial system The equatorial coordinate system is the most basic … more

Celestial Equator and the Ecliptic

2023-12-052019-06-15

The tilt relationship of the celestial sphere and ecliptic The celestial equator is the enlargement of the earth’s equator to the celestial sphere. Therefore, the celestial equator can be represented by a line fixed on the celestial sphere. The ecliptic … more