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TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 2263
SUBJECT: GRB 030519B: optical observations.
DATE: 03/06/01 23:35:30 GMT
FROM: Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>
J. Gorosabel (IAA-CSIC/STScI), A. Levan (U. Leicester/STScI),
A. de Ugarte Postigo (IAA-CSIC), A.J. Castro-Tirado (IAA-CSIC),
A. Fruchter (STScI), S. Guziy (IAA-CSIC), J.M. Castro Cerón (STScI),
A. Guijarro (CAHA), A. Aguirre (CAHA), M. Alises (CAHA) report:
"We have carried out observations of the central part (coverage
~75%) of the GRB 030519B (GCN 2235) error box, in four
optical bands, with the 2.2m (+BUSCA) telescope at the
Observatorio de Calar Alto. Three of these four bands are non
standard and calibration is still pending. The fourth one
corresponds to Ic, with photometry as follows:
---------------------------------------------
Date Texp Seeing Lim. Mag.
(May 2003 UT) (s) (") (3 sigma)
---------------------------------------------
21.03872--21.06376 3x600 2.0 23.3
21.99519--22.07959 7x600 2.2 23.5
22.98905--23.07625 5x900 3.1 23.3
24.00387--24.03936 3x900 2.3 23.3
---------------------------------------------
PSF matched subtraction did not reveal any reliable afterglow
candidate brighter than Ic ~ 23, implying that this burst likely
belongs to the dark GRB class."
This message may be cited.
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