Very Deep Near IR View of "AXAF Deep Field"

In order to be able to see such obscured and/or "evolved" galaxies in the early Universe, and to look for hitherto unknown galaxies beyond the limits of "deep-field" imaging in visible spectral bands, it is necessary to employ other observing techniques. The astronomers must search for such objects on large-field, very long-exposure sky images obtained in the near-infrared and far IR region of the electromagnetic spectrum. North is up and east is left. The reproduction is "negative", with dark objects on a light sky, in order to better show the faintest objects.

Technical note : This K-band image is the result of 510 min of integration time with ISAAC at VLT ANTU. The 3-sigma magnitude limit is about K = 23.5 per arcsec 2. A J-band image was also obtained during 200 min of integration, with a 3-sigma limit of J = 25 per arcsec 2. The seeing FWHM (Full Width at Half Maximum) is 0.65 arcsec for both bands. 

Credit:

ESO

About the Image

Id:eso0006a
Type:Observation
Release date:17 February 2000
Related releases:eso0006
Size:942 x 862 px

About the Object

Name:AXAF Deep Field
Type:• Early Universe : Galaxy : Grouping : Cluster
• X - Galaxy Clusters

Image Formats

Großes JPEG
400.3 KB
Screensize JPEG
416.7 KB

Wallpapers

1024x768
376.8 KB
1280x1024
558.9 KB
1600x1200
710.3 KB
1920x1200
745.5 KB
2048x1536
968.2 KB

Colours & filters

BandTelescope
Infrared
K
Very Large Telescope
ISAAC

 

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