Celestial Coordinates System - A Simple Guide for Backyard Astronomers
Equatorial mounts: an astronomer's guide - BBC Sky at Night Magazine
Right ascension - Wikipedia
How to find RA 0 - Astronomy Stack Exchange
Celestial Coordinates
When using a telescope with an equatorial mount, I need to align it with the south or north, then place the altitude matching it with my latitude; but what do I do
Equatorial mounts: an astronomer's guide - BBC Sky at Night Magazine
Celestial Coordinates
Positional Astronomy: <br>the first equatorial system