Cool tool for amateur astrophotographers

Have you taken a shot of the sky and don't have a clue what's in it?

Want to know exactly how big the field of your new camera/lens is?

Upload a sky photo you have taken to the free astrometry server and find out where in the sky it is, what's in it and the field of view of your lens in degrees. This also works for shots you find on the web, you can give the server an image URL instead of uploading one.

http://nova.astrometry.net/

It doesn't have to be a very good picture either, straight out of the camera works better than highly process pretty pics at least for me so far.

Here's an example of a not very clear shot of the sky that has been solved by the astrometry server.

http://nova.astrometry.net/user_images/35297#original