Hubble image of MACS J0717

This enormous image shows Hubble’s view of massive galaxy cluster MACS J0717.5+3745. The large field of view is a combination of 18 separate Hubble images.

Studying the distorting effects of gravity on light from background galaxies, a team of astronomers has uncovered the presence of a filament of dark matter extending from the core of the cluster. This is one of the first positive detections of a filament, and the most precise to date.

Using additional observations from ground-based telescopes, the team were able to map the filament’s structure in three dimensions, the first time this has ever been done.

Credit:

NASA, ESA, Harald Ebeling(University of Hawaii at Manoa) & Jean-Paul Kneib (LAM)

About the Image

Id:heic1215b
Type:Observation
Release date:16 October 2012, 15:00
Related releases:heic1215
Size:18956 x 10646 px

About the Object

Name:MACS J0717.5+3745
Type:Early Universe : Galaxy : Grouping : Cluster
Constellation:Auriga
Category:Galaxies

Image Formats

Screensize JPEG
172.3 KB

Zoomable


Wallpapers

1024x768
275.4 KB
1280x1024
425.0 KB
1600x1200
596.8 KB
1920x1200
710.4 KB
2048x1536
966.8 KB

Coordinates

Position (RA):7 17 43.80
Position (Dec):37° 42' 24.55"
Field of view:15.79 x 8.87 arcminutes
Orientation:North is 47.7° right of vertical

Colours & filters

BandWavelengthTelescope
Optical
V
606 nm Hubble Space Telescope
ACS
Optical
I
814 nm Hubble Space Telescope
ACS
Optical
V+I
Hubble Space Telescope
ACS

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