Hubble Ultra-Deep Field
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 This high-resolution image of the HUDF includes galaxies of various ages, sizes, shapes, and colors. The smallest, reddest galaxies, of which there are approximately 10,000, are some of the most distant galaxies to have been imaged by an optical telescope, probably existing shortly after the Big Bang. |
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. Looking back approximately 13 billion years (between 400 and 800 million years after the Big Bang) it will be used to search for galaxies that existed at that time. The HUDF image was taken in a section of the sky with a low density of bright stars in the near-field, allowing much better viewing of dimmer, more distant objects. The image contains an estimated 10,000 galaxies. In August and September 2009, the Hubble's Deep Field was expanded using the infrared channel of the recently attached Wide Field Camera 3 (WFC3). When combined with existing HUDF data, astronomers were able to identify a new list of potentially very distant galaxies.
- Related: HUDF-JD2, UDF 2457, UDF 423, UDFj-39546284, UDFy-38135539
| NASA site with animations NASA site with animations www.nasa.gov/vision/universe/starsgalaxies/hubble_UDF.html - Web |
| Exploring galaxy formation in the early universe Exploring galaxy formation in the early universe hubblesite.org/.../ - Web |
| Scalable interactive UDF with 10,000 galaxies mapp... Scalable interactive UDF with 10,000 galaxies mapped. Wikisky.org www.wikisky.org/.../?img_source=IMG_all&zoom=13&ra=3.54417&de=-27.7914 - Web |
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