ESO Imaging Survey. Deep Public Survey: Infrared Data for the Chandra Deep Field South
msra(2001)
摘要
This paper presents new J and Ks near-infrared data obtained from
observations of the Chandra Deep Field South (CDF-S) conducted at the ESO 3.5m
New Technology Telescope (NTT). These data were taken as part of the ongoing
Deep Public Survey (DPS) being carried out by the ESO Imaging Survey (EIS)
program, extending the EIS-DEEP survey. Combined these surveys now provide a
contiguous coverage over an area of 400 square arcmin in the near-infrared,
nearly matching that covered by the deep X-ray observations of Chandra, four
times the area of the original EIS-DEEP survey. The paper briefly describes the
observations and the new techniques being employed for pipeline processing
jittered infrared observations, which include unbiased de-fringing and
sky-background subtraction, pixel-based astrometry and stacking and pixel
registration based on a multi-resolution decomposition of the images. The
astrometric solution is based on a pre-release of the GSC-II catalog and has an
accuracy of < 0.15 arcsec. The final images for 12 pointings presented here
reach median 5 sigma limiting magnitudes of J_AB~23.4 and K_AB~22.6 as measured
within an aperture 2xFWHM. The frame to frame variation of the photometric
zero-point is estimated to be <0.09 mag. The data are publicly available in the
form of fully calibrated J and Ks pixel maps and source lists extracted for
each pointing. These data can be requested through the URL
``http://www.eso.org/eis''.
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关键词
surveys- stars: general,galaxies: general,catalogs,background subtraction,near infrared
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