Urban astro-nerds, rejoice! The smog and lights of the city will obscure your view of the heavens no more. And your star photography will twinkle. Now you can go online to access high-quality scopes at dark-sky sites worldwide and order them to take photos for you — cheaply or for free, and at decent resolution. It may take some preparation, but even if the results aren't exactly Hubble-icious, there's something out-of-this-world about playing astronomer for a night.