What basic astronomical knowledge is needed to observe the starry sky with an astronomical telescope?

First of all, you have to know some basic astronomical knowledge, such as the apparent motion of celestial bodies on Sunday, the basic information of planets in the solar system, the knowledge about meteor showers, comets, the sun and the moon, and some famous stars (such as Sirius and Nanhesan). ) as well as the operation of astronomical telescope, celestial coordinate system and the characteristics of starry sky in four seasons. If you plan to start with astronomical observation, I suggest you buy a copy of Watching the Stars at Night.