What was the approximate number of galaxies cataloged in the initial Hubble Deep Field (HDF) observation?
Answer
around 3,000 galaxies
The initial groundbreaking effort, the Hubble Deep Field (HDF), which involved staring at a seemingly blank patch of sky for about 10 days, managed to catalog approximately 3,000 galaxies. This achievement alone was monumental, demonstrating that even regions thought to be devoid of structure were densely populated with island universes stretching back billions of years. The HDF provided an early, stunning cross-section of galactic evolution, showcasing a range of structures from mature spirals to very faint, embryonic formations.
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?