Issue |
A&A
Volume 379, Number 2, November IV 2001
|
|
---|---|---|
Page(s) | 740 - 754 | |
Section | Numerical methods and codes | |
DOI | https://doi.org/10.1051/0004-6361:20011341 | |
Published online | 15 November 2001 |
ESO imaging survey*
Deep public survey: Multi-color optical data for the Chandra Deep Field South
1
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching b. München, Germany
2
Observatoire de la Côte d'Azur, BP 229, 06304 Nice Cedex 4, France
3
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, 85748 Garching b. München, Germany
4
Universidade Estadual de Feira de Santana, Campus Universitário, Feira de Santana, BA, Brazil
5
Observatório Nacional, Rua Gen. José Cristino 77, Rio de Janerio, Brasil
Corresponding author: S. Arnouts, sarnouts@eso.org
Received:
5
March
2001
Accepted:
17
September
2001
This paper presents multi-passband optical data obtained
from observations of the Chandra Deep Field South (CDF-S), located at
,
. The
observations were conducted at the ESO/MPG 2.2 m telescope at La Silla
using the
Wide-Field Imager (WFI). This data set, taken
over a period of one year, represents the first field to be completed
by the ongoing Deep Public Survey (DPS) being carried out as a part of the ESO
Imaging Survey (EIS) project. This paper describes the optical
observations, the techniques employed for un-supervised pipeline
processing and the general characteristics of the final data
set. Image processing has been performed using multi-resolution image
decomposition techniques adapted to the EIS pipeline. The automatic
processing steps include standard de-bias and flat-field, automatic
removal of satellite tracks, de-fringing/sky-subtraction, image
stacking/mosaicking and astrometry. Stacking of dithered images is
carried out using pixel-based astrometry which enables the efficient
removal of cosmic rays and image defects, yielding remarkably clean
final images. The final astrometric calibration is based on a
pre-release of the GSC-II catalog and has an estimated intrinsic
accuracy of
0.10 arcsec, with all passbands sharing the same
solution. The paper includes data taken in six different filters
(U'UBVRI). The data cover an area of about 0.25 square degrees
reaching 5σ limiting magnitudes of
,
,
,
and
24.7 mag, as measured within a
aperture. The optical
data covers an area of ~0.1 square degrees for which moderately
deep observations in two near-infrared bands are also available,
reaching
limiting magnitudes of
and
. The current optical/infrared data also fully
encompass the region of the deep X-ray observations recently completed
by the Chandra telescope. The optical data presented here, as well as
the infrared data released earlier, are publicly available world-wide
in the form of fully calibrated pixel and associated weight maps and
source lists extracted in each passband. These data can be requested
through the URL "http://www.eso.org/eis" .
Key words: catalogs / surveys / stars: general / galaxies: general
© ESO, 2001
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