Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of earth these differ in their choice of fundamental plane , which divides the celestial sphere into two equal hemispheres along a great circle. What are celestial coordinates the celestial coordinate system, which serves modern astronomy so well, is firmly grounded in the faulty world-view of the ancients they believed the earth was.
Equatorial coordinates, also called simply celestial coordinates, are the standard coordinate system for the sky it is meant for the fixed sphere of the stars within which the earth and sun move it is meant for the fixed sphere of the stars within which the earth and sun move.
The celestial equatorial coordinate system is based on the concept of the celestial sphere the celestial sphere is an imaginary sphere of infinite radius surrounding the earth the celestial sphere is an imaginary sphere of infinite radius surrounding the earth.
Chapter 1 review questions 1-17 on page 38 1 what is information system what are some ways information systems are changing our lives by definition, information system is a set of interrelated components that collect, manipulate, store, and disseminate data and information and provide feedback mechanism to meet an objective.
Now we have defined a standard coordinate system for the galaxy with the center of the galaxy as (0, 0, 0), and the x, y, and z axes well defined an alternative system for labeling coordinates would be to use spherical coordinates which are defined by an angle along the xy-plane, an angle between the xy-plane and the z-axis, and a distance.