The CFHT Legacy Survey Deep Field #1
The CFHT Legacy Suvey is a project funded by the National Research Council of Canada
and the Centre National de la Recherche Scienifique of France.

It is carried out by CFHT, CADC and  TERAPIX

Full image          Location of the zoomed areas in the field
Zoom 1
Zoom 2

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The whole field

Various resolution downloads:
[Scaled 1/8th: 2367x2477 pixels - JPEG - 997 KB] 
[Scaled 1/16th: 1183x1238 pixels - JPEG - 386 KB] 
[Scaled 1/32th: 591x619 pixels - JPEG - 93 KB] 


S
cientific description:
This image covers D1, one of the so-called "Deep Fields" of the CFHT Legacy Survey.

This D1 field is
- embedded in the CFHTLS-W1 field,
- centered in the Deep area of the VLT-VIRMOS Deep Survey field, in which spectroscopic optical follow-up is taking place at the VLT with VIMOS, up to I_AB=24 at more than 80% completeness,
- located within the area covered by the XMM-LSS survey: 20 ksec XMM pointings per field,
- and is also a GALEX and SIRTF target.

The data obtained on more then half a million galaxies shown in this image, and even more when more images will be added as the CFHTLS progresses, will be used not only by themselves, but with the information obtained from ground and space at other wavelengths for a better understanding of the evolution of the structure of the universe.

D1 is also observed very regularly, once every to 2 to 4 days when it is observable (5 to 6 months a year), in order to detect the SuperNovae appearing in the field. More information on this aspect of the CFHTLS can be found here.

Technical description:
MegaPrime / MegaCam (central 36 CCDs - 18Kx18K pixels)
Field of view: 60'x60' (1 square degree)
Filters used: g' - r' - i'
Exposure times:
    g':   2.1hrs
    i':  15.5hrs
    r' :   4.8hrs
Observed at CFHT 
Image processed at TERAPIX  from 250 individual exposures using software tools developed by TERAPIX.

Credit line: "Canada-France-Hawaii Telescope & TERAPIX/IAP / 2004"
Copyright © 2004 Canada-France-Hawaii Telescope Corporation & TERAPIX/IAP





Zoom #1

Various resolution downloads:
[Scaled 1/1: 1400x1400 pixels - JPEG - 404 KB] 
[Scaled 1/2th: 750x750 pixels - JPEG - 120 KB] 






Technical description:

A zoom of the whole image. The field of view is approximately 8' x 8', or 2% of the whole image.

Credit line: "Canada-France-Hawaii Telescope & TERAPIX/IAP / 2004"
Copyright © 2004 Canada-France-Hawaii Telescope Corporation & TERAPIX/IAP



Zoom #2

Various resolution downloads:
[Scaled 1/1: 1400x1400 pixels - JPEG  - 393 KB] 
[Scaled 1/2th: 700x700 pixels - JPEG - 117  KB] 






Technical description:

A zoom of the whole image. The field of view is approximately 8' x 8', or 2% of the whole image.

Credit line: "Canada-France-Hawaii Telescope & TERAPIX/IAP / 2004"
Copyright © 2004 Canada-France-Hawaii Telescope Corporation & TERAPIX/IAP



Zoom #3

Various resolution downloads:
[Scaled 1/1: 1400x700 pixels - JPEG  - 194 KB] 
[Scaled 1/2th: 700x350 pixels - JPEG - 56 KB] 

Technical description:
A zoom of the whole image. The field of view is approximately 8' x 4', or 1% of the whole image.

Credit line: "Canada-France-Hawaii Telescope & TERAPIX/IAP / 2004"
Copyright © 2004 Canada-France-Hawaii Telescope Corporation & TERAPIX/IAP