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.

Bildnachweis:

ESO

Über das Bild

ID:eso9845b
Typ:Beobachtung
Veröffentlichungsdatum:23. September 1998
Dazugehörige Veröffentlichungen:eso9845
Größe:2323 x 2320 px

Über das Objekt

Name:PB 05763
Typ:Early Universe : Galaxy : Grouping : Cluster
Early Universe : Galaxy : Activity : AGN : Quasar
Entfernung:z=0.85 (Rotverschiebung)
Constellation:Pisces
Kategorie:Galaxy Clusters

Bildformate

Großes JPEG
943,9 KB

Bildschirm-Hintergrundbilder

1024x768
214,4 KB
1280x1024
322,4 KB
1600x1200
424,4 KB
1920x1200
472,2 KB
2048x1536
619,8 KB

Koordinaten

Position (RA):0 8 48.04
Position (Dec):0° 39' 32.31"
Field of view:6.73 x 6.73 arcminutes
Orientierung:Die Nordrichtung liegt 45.1° links zur Vertikale

Farben & Filter

SpektralbereichWellenlängeTeleskop
Infrarot
I
800 nmVery Large Telescope
FORS1

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