The most powerful telescope for home use might not be that powerful at all. The term “powerful” can be misleading. Remember, magnification power isn’t as important as aperture and focal length. Put another way, it’s not how powerful a telescope is, but how much light it can see. The Hubble telescope has an aperture of over 7 feet. You can find a reasonably priced Dobsonian telescope for beginners to use in your backyard with an aperture of 16-inches.