Chandra Deep Field South

Three-colour composite image of the Chandra Deep Field South (CDF-S), obtained with the Wide Field Imager (WFI) camera on the 2.2-m MPG/ESO telescope at the ESO La Silla Observatory (Chile). It was produced by the combination of about 450 images with a total exposure time of nearly 50 hours. The field measures 36 x 34 square arcminutes ; North is up and East is left.

Technical information: The very extensive data reduction and colour image processing needed to produce these images were performed by Mischa Schirmer and Thomas Erben at the "Wide Field Expertise Center" of the Institut für Astrophysik und Extraterrestrische Forschung der Universität Bonn (IAEF) in Germany. It was done by means of a software pipeline specialised for reduction of multiple CCD wide-field imaging camera data. This pipeline is mainly based on publicly available software modules and algorithms (EIS, FLIPS, LDAC, Terapix, Wifix).

The image was constructed from about 150 exposures in each of the following wavebands: B-band (centred at wavelength 456 nm; here rendered as blue, 15.8 hours total exposure time), V-band (540 nm; green, 15.6 hours) and R-band (652 nm; red, 17.8 hours). Only images taken under sufficiently good observing conditions (defined as seeing less than 1.1 arcsec) were included. In total, 450 images were assembled to produce this colour image, together with about as many calibration images (biases, darks and flats). More than 2 Terabyte (TB) of temporary files were produced during the extensive data reduction. Parallel processing of all data sets took about two weeks on a four-processor Sun Enterprise 450 workstation and a 1.8 GHz dual processor Linux PC. The final colour image was assembled in Adobe Photoshop. The observations were performed by ESO (GOODS, EIS) and the COMBO-17 collaboration in the period 1/1999-10/2002.



À propos de l'image

Date de publication:10 janvier 2003
Communiqués de presse en rapport:eso0302
Taille:4000 x 3775 px

À propos de l'objet

Nom:Chandra Deep Field South
Type:Early Universe : Galaxy : Grouping : Cluster
Catégorie:Galaxy Clusters

Image Formats

Grand JPEG
13,0 Mio
JPEG taille écran
648,4 Kio


Fonds d'écran

566,2 Kio
939,2 Kio
1,3 Mio
1,6 Mio
2,2 Mio


Position (RA):3 32 28.09
Position (Dec):-27° 48' 30.93"
Field of view:34.02 x 32.04 arcminutes
Orientation:North is 0.0° left of vertical