Stephen Maran

“The ETX-90 sells for about $400 and comes with an Autostar computerized controller and a tripod. This instrument automatically points at almost any object you specify if that object is in view from your location at that time. The Autostar can even find moving objects, such as planets, based on stored information, and it’s equipped to give you a “tour” of the best sights in the sky, selected with no input from you. A good competing telescope for the ETX-90 is the Celestron SkyProdigy 90. It’s comparably sized and equipped and has the capability to automatically align itself on the sky, after which it points to almost any celestial object that you select. It goes for about $600. You definitely don’t want to spend this much money on a telescope until you see the same model in action at an astronomy club observing meeting or a star party (see Chapter 2). But the price is no more than you pay for a fine camera and an accessory lens or two. You can find larger telescopes for less money — check the ads in current issues of astronomy magazines — but you have to invest much more effort in learning to use them effectively. Some brand-name telescopes are sold through authorized dealers that tend to have expert knowledge. But take their advice with just a wee bit of salt. Here are some key websites to browse for telescope product information:”
― Stephen Maran, Astronomy For Dummies