What are the parameters of the astronomical telescope? What does this have to do with stargazing?

Astronomical telescope is just one of the tools for observing stars, as well as naked eyes and binoculars. Choosing different tools according to different projects, such as watching meteors with naked eyes, using binoculars for small constellations and clusters, will be equally wonderful. Astronomical mirrors are generally used to look at planets.

The most important parameters of a telescope are aperture and focal length.