"Taken by the VISTA survey telescope at the ESO's Paranal Observatory in Chile, this 9-gigapixel photo is the result of thousands of individual images being meshed together. If it were printed out at the average resolution of a standard book it would measure a mind-boggling 9 x 7 meters. Using three separate infrared filters, VISTA is able to see through dust fields that normally obscure the view of an optical telescope."

If interested, check the link to the photo. Definitely worth it. Zooming all the way in is truly amazing.

http://www.eso.org/public/images/eso1242a/zoomable/