TITLE:   GCN CIRCULAR
NUMBER:  14533
SUBJECT: GRB 130502A: z-band observations from GTC
DATE:    13/05/02 22:23:16 GMT
FROM:    Antonio de Ugarte Postigo at IAA-CSIC  <deugarte@iaa.es>

A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), J. Gorosabel (UPV/EHU, IAA-CSIC), 
N. Tanvir (U. Leicester), J. P. U. Fynbo (DARK/NBI), A. Cabrera-Lavers (IAC-ULL), 
and C.C. Thoene (IAA-CSIC) report:

We observed the afterglow of GRB 130502A (Troja et al. GCN 14527) 
with the 10.4m GTC telescope starting at 21:01 UT (3.18 hrs after the burst). 
The observation had a total exposure time of 340 s in z-band. The object 
reported by Malesani et al. GCN 14531 is detected with an AB magnitude of 
22.6+/-0.15 as compared to stars in the SDSS DR9 catalogue.