GCN Circular 2903
Subject
GRB 041223: J-band observations of the afterglow
Date
2004-12-24T11:52:52Z (19 years ago)
From
Daniele Malesani at SISSA-ISAS,Trieste,Italy <malesani@sissa.it>
D. Malesani, G. Tagliaferri, G. Chincarini, S. Campana, S. Covino, L.A.
Antonelli, M. Della Valle, F. Fiore, L. Stella, F.M. Zerbi, P. D'Avanzo,
A. Moretti, and P. Romano report on behalf of the MISTICI collaboration:
We observed the field of GRB041223 (Tueller et al., GCN 2898; Burrows et
al., GCN 2901) with the ESO-VLT-UT1 equipped with the ISAAC camera,
starting on 2004 Dec 24.256 (~16 hours after the GRB). The observing
conditions were good, with a seeing of 0.6". Twelve one-minute exposures
were acquired in the J band, with a mean UT 24.261.
The source reported by Berger et al. (GCN 2902) is clearly detected in
our images, with a magnitude J = 19.51+-0.05, based on comparison with 3
nearby bright nonsaturated stars from the 2MASS catalog.
We warmly thank the ESO staff at Paranal, in particular Olivier Marco
and Jonathan Smoker, for carefully performing the observations in
service mode.
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