It includes ALL images taken by Hubble on the small patch of sky first imaged as the Hubble Ultra-Deep Field (HUDF) and subsequently as the HUDF09 and HUDF12. This image, called the Hubble eXtreme Deep Field (XDF), combines Hubble observations taken over the past decade of a small patch of sky in the constellation of Fornax. The HUDF image was taken in a section of th… Das Hubble Extreme Deep Field (XDF) ist ein Bild einer kleinen südlichen Himmelsregion, das entstand, indem Aufnahmen des Hubble-Weltraumteleskops aus dem Zentrum des Hubble Ultra Deep Field (HUDF) über einen Zeitraum von zehn Jahren zusammengefügt wurden. 2.7 MB The faintest galaxies are one ten-billionth the brightness of what the human eye can see. Yet even in this tiny fraction of the sky, the long exposure reveals about 5500 galaxies, some of them so distant that we see them when the Universe was less than 5% of its current age.The Hubble eXtreme Deep Field image contains several of the most distant objects ever identified.NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R. Bouwens (Leiden University), and the HUDF09 Team Published in 2012, the Hubble eXtreme Deep Field is not a new set of observations, but rather a combination of many existing exposures (over 2000 of them) into one image. In order to obtain deep visible exposures on top of the NICMOS parallel fields a follow-up program, HUDF05, was approved and granted 204 orbits to observe the two parallel fields (The field imaged by the ACS contains over 10,000 objects, the majority of which are galaxies, many at The Hubble eXtreme Deep Field (HXDF), released on September 25, 2012, is an image of a portion of space in the center of the Hubble Ultra Deep Field image. 1.8 MB Representing a total of two million seconds (approximately 23 days) of exposure time collected over 10 years, the image covers an area of 2.3 arcminutes by 2 arcminutes,The HXDF contains approximately 5,500 galaxies, the oldest of which are seen as they were 13.2 billion years ago. Das Gebiet hat eine Kantenlänge von 144 Bogensekunden, das ist in etwa der Winkel, unter dem ein Tennisball in 100 m Entfernung erscheint. The Hubble Ultra-Deep Field (HUDF) is an image of a small region of space in the constellation Fornax, containing an estimated 10,000 galaxies. These are necessary to identify high redshift objects as they should not be seen in the visible bands.
The XDF is a small fraction of the angular diameter of the full Moon. 1.1 MB The deep NICMOS fields obtained in parallel to the ACS images could in principle be used to detect galaxies at redshift 7 or higher but they were lacking visible band images of similar depth. Combining the Hubble Ultra Deep Field, the Hubble Ultra Deep Field – Infrared, and many other images of the same small spot of sky taken over almost 10 years, the Hubble eXtreme Deep Field pushes the limit even further. The total exposure time is just under 1 million seconds, from 400 orbits, with a typical exposure time of 1200 seconds.The sensitivity of the ACS limits its capability of detecting galaxies at high redshift to about 6.
The eXtreme Deep Field, or XDF, was assembled by combining 10 years of NASA Hubble Space Telescope photographs taken of a patch of sky at the center of the original Hubble Ultra Deep Field. 393.3 KB Das Bild ist eine Überlagerung von 342 Einzelbildern, die mit der Wide Field and Planetary Camera 2(WFPC2) des Hubble-Weltraumteleskops im Verlauf von zehn Tagen, zwischen dem 18. und 28. On September 25, 2012, NASA released a further refined version of the Ultra-Deep Field dubbed the Unlike the Deep Fields, the HUDF does not lie in Hubble's Continuous Viewing Zone (CVZ).