Editing Hubble Ultra-Deep Field (section)

==Contents==
{{multiple image |direction=horizontal |align=right |total_width=400
 |image1=UDF423-SpiralGalaxy.jpg |caption1=Spiral galaxy [[UDF 423]] (visible-light)
 |image2=Ssc2005-19a.jpg |caption2=Hidden to visible light, another object above the galaxy
}}

The HUDF is the deepest image of the [[universe]] ever taken and has been used to search for galaxies that existed between 400 and 800 million years after the [[Big Bang]] (redshifts between 7 and 12).<ref name="press_release" />{{Obsolete source|reason=Unclear if deeper images have been taken since 2004, the year of the cited source.|date=March 2023}} Several galaxies in the HUDF are candidates, based on [[photometric redshift]]s, to be amongst the [[list of the most distant astronomical objects|most distant astronomical objects]]. The [[red dwarf]] [[UDF 2457]] at distance of 59,000 [[light-year]]s is the furthest star resolved by the HUDF.<ref name=Malhotra>{{cite web |title=As far as the Hubble can see |first=Sangeeta |last=Malhotra |publisher=[[Arizona State University]] |url=http://malhotra.asu.edu/Welcome_files/ASY-HI1105.pdf |access-date=October 28, 2010}}</ref> The [[star]] near the center of the field is USNO-A2.0 0600–01400432 with [[apparent magnitude]] of 18.95.<ref name=Wikisky-center>{{cite web |title=Highlight HUDF Center at 3 32 39.0 -27 47 29.1 |publisher=Wikisky |url=http://www.wikisky.org/?ra=3.5441666&de=-27.791416000000005&zoom=12&show_grid=1&show_constellation_lines=1&show_constellation_boundaries=1&show_const_names=1&show_galaxies=1&show_box=1&box_ra=3.5441666&box_de=-27.791416&box_width=50&box_height=50&img_source=IMG_all |access-date=October 28, 2010}}</ref>{{Better source needed|reason=WikiSky isn't a conventionally reliable source|date=April 2017}}

The field imaged by the ACS contains over 10,000 objects, the majority of which are galaxies, many at [[redshift]]s greater than 3, and some that probably have redshifts between 6 and 7.<ref name="Beckwith2006" />  The [[Near Infrared Camera and Multi-Object Spectrometer|NICMOS]] measurements may have discovered galaxies at redshifts up to 12.<ref name="press_release" />