Choosing the Coordinate System
Contents
The possible coordinate systems are...
•Equatorial - Coordinate lines on the sphere are lines of right ascension and declination.
•Ecliptical - Coordinate lines on the sphere are lines of longitude and latitude.
•Local - Coordinate lines on the sphere are lines of azimuth and altitude. When viewing a chart, the local horizon is that for the location of the chart at the time of the chart. If no chart is being displayed, then the local horizon is that of the default location of Solar Fire, as displayed on Solar Fire’s Main Screen, and the time is current time according to your computer’s system clock.
When you select the required system from the drop-down list box, the display will be updated automatically to reflect the new coordinate system.