An altazimuth is a telescope or surveying instrument which has a mount permitting both horizontal and vertical rotation.

Because the Earth is spinning at a rate of 15 degrees per hour.

a coordinate system is lines of longuitude and latitude that are used in a map to locate something. There is a coordiante in the Equatorial Coordinate System that is like longitude in the Geographical Coordinate System.....what is the coordinate? Celestial Equator?

The North Point

Cartesian coordinate system.