The Chandra Deep Field South (CDF-S) is one of the deepest
observations obtained with the X-ray Chandra satellite, which
stared at the same path of the sky for 11 days. The final image
is the result of the co-addition of 11 individual Chandra ACIS-I
exposures obtained in 1999-2000, for a total of one million
seconds (1 Msec). The project was lead by Riccardo Giacconi. The
nominal aim point of the CDF-S is RA=3:32:28.0 , Dec=-27:48:30
(J2000), covering 0.11 square degree. After these observations,
the CDF-S has become the center of one the most comprehensive
multi-wavelength campaign ever carried out with ground-based and
space observatories. CDF-S in the X-ray Color composite image of
the Chandra Deep Field South of 940 ks (pixel size = 0.984
arcsec, smoothed with a s =1 arcsec Gaussian). The image was
obtained by combining three energy bands: 0.3-1, 1-2 and 2-7
keV. Click on the image to enlarge it .