When you become an astronomer, you do not have to live in a specific place. When an astronomer looks at the stars, he studies how it's chemistry changes. There is also the option of joining a local astronomy society as this can be of help. You can get more tips at http://www.wikihow.com/Become-an-Astronomer.
you can live where you want,planetariums are in every major city,but the best you may have to travel to see them,it can be boring as sometimes you sit for hours watching the same spot,a lot of telescopes arent optical so you have to read the printouts or images in different spectrums