Approximately how long was the cumulative exposure time required to accumulate the light for the HUDF?
Answer
nearly 11 days
The successful accumulation of light necessary to create the Hubble Ultra Deep Field (HUDF) required a massive cumulative integration time, amounting to nearly 11 days of exposure time. This extensive duration corresponded to approximately 400 separate orbits around Earth made by the Hubble Space Telescope. This vast cumulative integration time was the critical factor that permitted the detection of objects so faint that they would have remained entirely invisible if the telescope had been pointed at that region for the shorter duration used for the original Hubble Deep Field (HDF).
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