FORS1 First Light - Distant cluster of galaxies

Produced from a 5-min near-infrared exposure, this image was obtained during the night of First Light of the FORS1 instrument (September 15, 1998). It shows a sky field near the quasar PB5763 in which is also seen a peculiar, quite distant cluster of galaxies. Many other fainter galaxies are seen in other areas, for instance in the right part of the field.

Images eso9845b (negative) and eso9845c (positive) are based on a monochrome image taken in 0.8 arcsec seeing through a near-infrared (I; 800 nm) filtre. The exposure time was 5 minutes and the image was flat-fielded. The fields shown measure 6.8 x 6.8 arcmin and 2.5 x 2.3 arcmin, respectively. North is to the upper left; East is to the lower left.

Credit:

ESO

About the Image

Id:eso9845b
Type:Observation
Release date:23 September 1998
Related releases:eso9845
Size:2323 x 2320 px

About the Object

Name:PB 05763
Type:• Early Universe : Galaxy : Activity : AGN : Quasar
• Early Universe : Galaxy : Grouping : Cluster
• X - Galaxy Clusters
Distance:z=0.85 (redshift)
Constellation:Pisces

Image Formats

Large JPEG
942.8 KB
Screensize JPEG
233.0 KB

Wallpapers

1024x768
213.5 KB
1280x1024
321.5 KB
1600x1200
423.5 KB
1920x1200
471.5 KB
2048x1536
619.1 KB

Coordinates

Position (RA):0 8 48.04
Position (Dec):0° 39' 32.31"
Field of view:6.73 x 6.73 arcminutes
Orientation:North is 45.1° left of vertical

Colours & filters

BandWavelengthTelescope
Infrared
I
800 nmVery Large Telescope
FORS1

Notes: This image is the negative of eso9845c (http://www.eso.org/public/images/eso9845c/).

 

Also see our