Galaxy Cluster CL2244-02 with Gravitational Arcs

The image is a colour composite image of the galaxy cluster CL2244-02 (redshift z = 0.3), combining a 20 min jittered ISAAC Ks (2.16µm) exposure with 15 min V (green-yellow) and R (red) exposures, obtained with the VLT Test Camera at the UT1 Nasmyth focus. In addition to the prominent blue arc, produced by gravitational lensing of a galaxy at redshift z = 2.24, there are also notable, very red arcs, both closer to the centre and further out. They were only detected in the infrared image and are probably due to lensing of a much more distant galaxy.

Credit:

ESO

About the Image

Id:eso9856d
Type:Observation
Release date:26 November 1998
Related releases:eso9856
Size:2872 x 2865 px

About the Object

Name:CL2244-02
Type:• Early Universe : Galaxy : Grouping : Cluster
• X - Galaxy Clusters
Distance:z=0.3 (redshift)
Constellation:Aquarius

Image Formats

Screensize JPEG
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1600x1200
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1920x1200
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2048x1536
1.4 MB

Coordinates

Position (RA):22 47 12.10
Position (Dec):-2° 5' 44.96"
Field of view:1.37 x 1.37 arcminutes
Orientation:North is 37.4° left of vertical

Colours & filters

BandWavelengthTelescope
Infrared
Near-IR
2.16 μmVery Large Telescope
ISAAC
Optical
V
Very Large Telescope
Optical
R
Very Large Telescope

 

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