Detail of the AXAF Deep Field

Image showing a small area of the AXAF Deep Field at the original resolution. It measures about 5.8 x 6.5 arcmin 2, i.e. the area corresponds to approx. 1/30 of the full frame. The background is extremely crowded with very faint objects - most of these are galaxies at very large distances. Some of them are likely to be identified as strong X-ray emitters when this field is observed with the Chandra X-ray Observatory.

Twenty-eight exposures with a total integration time of 7 hours have been co-added. After each single exposure, the telescope was offset by a small angle in order to cover also the gaps between the eight CCD's in the mosaic and to enable removal of minor cosmetical blemishes of the detectors. Since the CCD mosaic of the WFI comprises 67 million pixels, a total of 1,900 million data points was thus used to construct this image. The related image processing, using the EIS WFI data reduction pipeline, recently developed at ESO, kept a powerful workstation fully busy for about 8 hours.

Credit:

ESO

About the Image

Id:eso9954b
Type:Observation
Release date:21 December 1999
Related releases:eso9954
Size:1440 x 1450 px

About the Object

Name:AXAF Deep Field
Type:• Early Universe : Galaxy : Grouping : Cluster
• X - Galaxy Clusters

Image Formats

Large JPEG
1.2 MB
Screensize JPEG
727.4 KB

Wallpapers

1024x768
484.5 KB
1280x1024
816.2 KB
1600x1200
1.1 MB
1920x1200
1.2 MB
2048x1536
1.7 MB

Colours & filters

BandTelescope
Optical
B
MPG/ESO 2.2-metre telescope
WFI

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