Galaxy cluster RCS2 J2327

This image shows the galaxy cluster RCS2 J2327. The mass of the cluster causes both strong and weak gravitational lensing, which can be used to calculate the mass of the cluster. This image is a composite of observations from the HAWK-I instrument on ESO’s Very Large Telescope and the NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys. It demonstrates an impressively detailed collaborative approach to studying weak lensing in the cosmos.

Links:

Credit:

ESO & ESA/Hubble & NASA

About the Image

Id:potw1752b
Type:Observation
Release date:25 December 2017, 06:00
Size:4036 x 4013 px

About the Object

Name:RCS2 J2327
Type:Early Universe : Galaxy : Grouping : Cluster
Constellation:Pisces
Category:Galaxies

Image Formats

Large JPEG
4.7 MB
Screensize JPEG
162.3 KB

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Coordinates

Position (RA):23 27 27.74
Position (Dec):-2° 4' 27.04"
Field of view:3.37 x 3.35 arcminutes
Orientation:North is 47.0° right of vertical

Colours & filters

BandWavelengthTelescope
Optical
B
435 nm Hubble Space Telescope
ACS
Optical
I
814 nm Hubble Space Telescope
ACS
Infrared
Ks
2.146 μm Very Large Telescope (VLT)
HAWK-I

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