It's amazing it took 5000 years after the ancients discovered glass for us to fashion glass into a primitive Lens (by todays standards) then WOW, the next 500 years of development we come to the modern Telescope, with todays technology , GOTO Telescopes with precision tracking with in built GPS to enable them to find where they are anywhere on the Planet, the ability to guide themselves so that whatever you are observing stays in the middle of the eyepiece for as long as you like, great for the astro-imager, or for just looking in wonder. You will find Telescopes like these and more at astronomyandtelescopesforyou.com   so please pay a visit and return often.