[vsnet-grb-info 310] GRB 020714, optical observations

[GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1466
SUBJECT: GRB 020714, optical observations
DATE:    02/08/10 18:45:03 GMT
FROM:    Javier Gorosabel at LAEFF-INTA, Madrid  <jgu@laeff.esa.es>

 J. Gorosabel (IAA-CSIC), J.M. Castro Cerón (ROA),
 A.J. Castro Tirado (IAA-CSIC), A. Guijarro (CAHA),
 F. Hoyo (CAHA), S. Pedraz (CAHA) and C. Wolf (Oxford Univ.),
 report:

 We have carried out Ic-band observations of the central
 part of the GRB 020714 (GCN 1457) error box with the 2.2m
 Telescope of Calar Alto (+BUSCA) as follows:

 ==============================================================  
 Date             Seeing Exp.Time  Lim.Mag. Time Since Coverage
 (2002 UT)         (")     (s)    (3 sigma) GRB (days)   (%)
 --------------------------------------------------------------
 18.020-18.105/07  1.3    7x900     24.4       3.4        60
 19.021-19.094/07  1.1    6x900     24.5       4.4        60
 06.036-06.110/08  1.8    6x900     24.1      22.4        55
 --------------------------------------------------------------

 Marginal variability (< 0.25 mag) is detected for 5 objects.
 None of these sources shows flux variability consistent with
 a decay as expected for an optical afterglow 3.4-22.4 days
 after the GRB.

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