Want to buy Telescope ( want help)?

I would not buy a computer controlled telescope like that. If you are serious about astronomy, you should learn how to find objects in the sky on your own, and operate a clock drive. These computer scopes are not that accurate anyway. The mechanism adds a lot to the cost, but nothing to the optics. If you have the space you should be looking at a 10 or 12" Dobsonian, a scope like that will show you much more than these 6" telescopes will. Also it depends what you are looking at, if you are mainly looking at planets, you want a longer focal length like f/11. If you are doing mainly deep sky observing, they f/5 or f/6 would be better. The more aperture you can afford and use, the better your results will be. Don't forget how important eyepieces are too. a good eyepiece is just as important as the telescope itself.