The GOODS-South field
This composite image of the GOODS-South field — the result of an extremely deep survey using two of the four giant 8.2-metre telescopes composing ESO’s Very Large Telescope (VLT) and a unique custom-built filter — shows some of the faintest galaxies ever seen. It also allows astronomers to determine that 90% of galaxies whose light took 10 billion years to reach us have gone undiscovered.
The image is based on data acquired with the FORS and HAWK-I instruments on the VLT. It shows in particular two varieties of light emitted by excited hydrogen atoms, known as Lyman-alpha and H-alpha.
Credit:ESO/M. Hayes
Over de afbeelding
Id: | eso1013a |
Type: | Observatie |
Publicatiedatum: | 24 maart 2010 19:00 |
Gerelateerde berichten: | eso1013 |
Grootte: | 1787 x 1787 px |
Over het object
Naam: | GOODS South field |
Type: | Early Universe : Galaxy : Grouping : Cluster |
Afstand: | z=2.2 (roodverschuiving) |
Constellation: | Fornax |
Categorie: | Galaxy Clusters |
Wallpapers
Coordinates
Position (RA): | 3 32 32.74 |
Position (Dec): | -27° 47' 20.40" |
Field of view: | 7.47 x 7.47 arcminutes |
Orientation: | North is 44.4° left of vertical |
Kleuren & filters
Band | Golflengte | Telescoop |
---|---|---|
Optisch Ly-alpha | 390 nm | Very Large Telescope FORS1 |
Optisch H-alpha | 2.1 μm | Very Large Telescope HAWK-I |