How do astronomical telescopes find stars?

You can use star finder and manual equatorial plane to find stars manually; However, the more advanced technology is an equatorial instrument that can automatically find stars. There are two general principles: enter the coordinates of a celestial body in the equatorial plane, and then calculate the position of the celestial body through the time angle to find it; The other is to aim at celestial bodies by analyzing the relative position relationship of a certain sky area. The second method is more accurate and more expensive, and it needs to add a "star guide mirror" (different from the high-end products of the star finder).