What was the commonly cited number of galaxies shown by the Hubble Ultra Deep Field (HUDF)?
Answer
10,000 galaxies
The Hubble Ultra Deep Field (HUDF) image is famously cited as revealing approximately 10,000 galaxies within its frame. Some subsequent analyses even suggested the count leaned toward more than 10,000 celestial structures. This number represents a significant increase over the initial Hubble Deep Field (HDF), which cataloged around 3,000 galaxies. The HUDF achieved this deeper census due to its much longer exposure time and the use of more sensitive instruments, allowing it to capture light from extremely distant and faint sources.
Related Questions
What was the commonly cited number of galaxies shown by the Hubble Ultra Deep Field (HUDF)?Which instruments were used to construct the Hubble Ultra Deep Field (HUDF) image?How small was the region of the sky targeted by the Hubble Ultra Deep Field (HUDF) relative to the total sky area?What was the initial galaxy count reported when the Hubble Ultra Deep Field (HUDF) results were first published?Approximately how long was the cumulative exposure time required to accumulate the light for the HUDF?What was the approximate number of galaxies cataloged in the initial Hubble Deep Field (HDF) observation?Why were instruments like NICMOS necessary for constructing the HUDF image using Hubble?What next-generation observatory is prioritizing revisiting the HUDF area to build upon Hubble's foundation?How did the HDF compare to the HUDF in terms of initial exposure duration?What variety of galactic structures did the Hubble Deep Field (HDF) observation reveal in its cross-section of cosmic time?