Other telescopes use a concave mirror to reflect light and form an image. Mirror telescopes are cheaper, so that's what most big telescopes are today. Thus, our telescope is an antique deluxe telescope. That might get you a good Mercedes today, but remember that a Coke cost 5 cents in 1950. This telescope is a relic of the days when astronomers actually looked through telescopes.
Modern telescopes are more like big cameras to record images in electronic storage devices.
To examine an object with a modern telescope, an astronomer enters the object's sky coordinates in a computer which would then point the telescope. A video camera, hooked up to immediately show the area the telescope is examining, would be used to fine tune the computer's pointing. A research astronomer would probably never look through the telescope. In contrast, when you look through this telescope, the same light photons enter your eye that actually bounced off the moon or another planet or were emitted by another star in our Galaxy hundreds of years ago or have been traveling through space for millions of years, even from a nearby galaxy like the Andromeda Galaxy. This is an existential experience that no text photo or TV image can give.