BUFFALO’s view on Abell 370

The galaxy cluster Abell 370 was the first target of the BUFFALO survey, which aims to search for some of the first galaxies in the Universe.

This remarkable cluster in the constellation of Cetus is located approximately four billion light-years away. Its mass, consisting of both hundreds of galaxies and dark matter, bends and distorts the light coming from even more distant objects behind it. This effect is known as strong gravitational lensing.

The most stunning demonstration of gravitational lensing can be seen just below the centre of the image. Nicknamed “the Dragon”, this extended feature is made up of a multitude of duplicated images of a spiral galaxy in the background of Abell 370 — all lying five billion light-years away.

Credit:

NASA, ESA, A. Koekemoer, M. Jauzac, C. Steinhardt, and the BUFFALO team

About the Image

Id:heic1816a
Type:Observation
Release date:13 September 2018, 17:00
Related releases:heic1816
Size:7819 x 8897 px

About the Object

Name:Abell 370
Type:Early Universe : Galaxy : Grouping : Cluster
Distance:4 billion light years
Constellation:Cetus
Category:Galaxies

Image Formats

Large JPEG
19.0 MB
Screensize JPEG
307.3 KB

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233.4 KB
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536.3 KB
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901.2 KB

Coordinates

Position (RA):2 39 52.84
Position (Dec):-1° 34' 38.18"
Field of view:3.91 x 4.45 arcminutes
Orientation:North is 27.7° right of vertical

Colours & filters

BandWavelengthTelescope
Infrared
Z
1.05 μm Hubble Space Telescope
WFC3
Infrared
J
1.25 μm Hubble Space Telescope
WFC3
Infrared
H
1.6 μm Hubble Space Telescope
WFC3
Optical
I
814 nm Hubble Space Telescope
ACS
Optical
V
606 nm Hubble Space Telescope
ACS
Optical
B
435 nm Hubble Space Telescope
ACS

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