Create admire Hubble Telescope: Extreme Deep Field

Create admire Hubble Telescope: Extreme Deep Field | New

Hubble space telescope could arguably be one of the best telescopes belong to the human race to date. Photos of the beauty of the universe objects taken using this telescope often make us wonder. One of them is a photo called Extreme Deep Field or abbreviated

XDF.Hubble XDF is a photo of a tiny spot in the sky that its contents about 5,500 galaxies. Its location is the center of the photograph Hubble Ultra Deep Field in the constellation Fornax, a small constellation in the southern sky near the constellation Eridanus and Cetus. XDF is created thanks to the Hubble telescope performance for 10 years, a total observation time of 50 days, 2 million second exposure time (exposure time), and 2,000 photos combined.

Hubble XDF (Source: hubblesite.org)

In the photos XDF, almost all the points that are visible are a galaxy. Ranging from spiral galaxies like the Milky Way and Andromeda, until the red galaxies in which there is no more the process of star birth. The characteristics of object in the photo is a point that has the 6 pillars of light into a corner, for example, are objects in the right-middle-bottom.

According to the news release accompanying the photo on September 25, 2012 and it recorded the most distant galaxies in the XDF is 13.2 billion light years. Because of the age of the universe (based on the latest research) is 13.7 billion years old, then the galaxy is about 450 million years old. Compare with the Sun and the solar system 4.5 billion years old.

XDF comparison and Moon (Source: hubblesite.org)Before Hubble telescope began operation in the early 1990s, we could only see galaxies as far as 7 billion light-years away. Earth-based observations is limited by the presence of the atmosphere, which just passed the visual light and radio waves from space to the Earth's surface. Hubble telescope was finally able to widen the distance limitations to be almost 2-fold. But the next few years we will probably enjoy more spectacular photo again from James Webb Space Telescope.James Webb Space Telescope, scheduled for launch in 2018, will be directed to the same point with the XDF. Because sensitive in the infrared wavelength region, this telescope will be able to record a galaxy that is located further away from the existing XDF. It's interesting to wait.This article has been discussed in dadc twitter account some time ago:

    - Goodnight twips. dadc want to discuss one of the best photos from hubble telescope ya. called extreme deep field # xdf

    - Hubble # xdf is a photo of a tiny spot in the sky about 5500 galaxies contents!

    - The farthest galaxies in photo # xdf it is 13.2 billion light years. whereas the age of the universe is 13.7 mtc!

    - So galaxies are visible in photo # xdf it only lasted for 450 million years, since the formation of the universe / big bang

    - Wonder how can the hubble take some photo # xdf which contains galaxies as far and as weak as that? gini how:

    - Hubble focus to a single point in the sky is dark. photograph at that point the data recorded for 10 years.

    - In total, hubble spent 50 days and get the exposure time / exposure time of 2 million seconds!

    - And there are more than 2,000 photos were combined to produce # xdf

    - Let ga curious, see first picture # xdf http://hubblesite.org/newscenter/archive/releases/2012/37/image/a/format/web_print/

    - In the photo, all the points are galaxies! except with a rounded point spike in the bottom-right, it is a star # xdf

    - Before # this xdf, hubble ultra deep field has photo # HUDF and hubble deep field. # Xdf is a central part of the # HUDF

    - A few more years there will probably be a more sophisticated picture, with better depth # xdf

    - James webb telescope sensitive in the infrared region will be directed also to # xdf order to see the much fainter galaxies again

    - If the current # xdf wrote already cool, the telescope captured jw definitely cool again later. worth the wait!