Original: The Hubble Ultra Deep Field (HUDF) is an image of a small region of space in the constellation Fornax, composited from Hubble Space Telescope data accumulated over a period from September 24, 2003, through to January 16, 2004.
Simplified: The Hubble Ultra Deep Field, or HUDF, is an image of a small part of space in the constellation Fornax. It took more than 3 months to capture this image, in fact, from September 24 2003 through January 16 2004, the HST was busy taking pictures of this place.