Today, I want to talk about the equatorial coordinate system. Start with this: What if we could project Earth's coordinates of longitude and latitude into the sky? Latitude wouldn't be a problem, but ...

Many amateur astronomers have difficulty understanding the equatorial coordinate system at first. But once you get the hang of it, using it becomes as easy as using latitude and longitude to locate ...

The equatorial coordinate system projects Earth's latitude and longitude onto the celestial sphere, using declination (angular distance from the celestial equator, measured in degrees) and right ...