TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3584
SUBJECT: GRB 050713, R-band observations at NOT
DATE:    05/07/13 08:02:26 GMT
FROM:    Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct@iaa.es>

S. Guziy, A. J. Castro-Tirado, A. de Ugarte Postigo,
J. Gorosabel (IAA-CSIC Granada), J. de León Cruz
(IAC Tenerife),  O. Bogdanov (Nikolaev State Univ.)
and M. Jelínek (IAA-CSIC),

report:

"Following the detection of GRB 050713 by Swift
(Falcone et al. GCNC 3581), we obtained R-band
images at the 2.5m Nordic Optical Telescope
(+ ALFOSC) starting on June 13.295 UT (about
47 min after the burst onset). We confirm the
presence of an optical source fainter than the DSS-2
limiting magnitude within the reported Swift/XRT
error box, at RA(2000) = 21 22 09.53,  Dec(2000) =
+77 04 29.5 (+/- 0.4"), consistent with the position
reported by Malesani et al. (GCNC 3582). Further
observations are needed in order to confirm if this
is the optical afterglow to GRB 050713. "

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