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Hubble Ultra Deep Field
Article By:
Stiavelli, Massimo Space Telescope Science Institute, Baltimore, Maryland.
Last reviewed:2012
DOI:https://doi.org/10.1036/1097-8542.YB120351
The Hubble Ultra Deep Field (HUDF) represents the deepest image ever produced of the universe at visible wavelengths (that is, the image containing the faintest objects ever seen) [Fig. 1]. The first HUDF image was created by combining exposures obtained between September 2003 and January 2004 by the Advanced Camera for Surveys (ACS) onboard the Hubble Space Telescope. The total exposure time exceeded 300 h.
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