Starguide - A Practical Guide to Astro-Photography

In astronomy, the meridian is the great circle passing from North at the horizon over the north celestial pole (NCP), to zenith and down to South at the horizon on the northern hemisphere.

On the southern hemisphere it connects the South at the horizon, the south celestial pole (SCP), nadir and the North at the horizon.

See the full article at Wikipedia

Created with the Personal Edition of HelpNDoc: Free Qt Help documentation generator