[vsnet-grb-info 13248] GRB 130505A: optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14585
SUBJECT: GRB 130505A: optical observations
DATE:    13/05/06 02:27:34 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

Yu. Krugly (IA KhNU), I. Slyusarev (IA KhNU),  I. Molotov (KIAM), A. 
Pozanenko (IKI) report on behalf of larger collaboration:

We observed a filed of the Swift GRB 130505A (Cannizzo  et al. GCN 14563) 
with  0.7m  telescope of Institute of Astronomy, Kharkiv National University 
between  May 05 (UT) 20:52:35 - 21:19:57. A set of images of 180 s were 
taken in R-filter. In the combined image we clearly  detect optical 
afterglow (Cannizzo  et al., GCN 14563; Tanvir et al., GCN 14567; Kuroda et 
al., GCN 14568). Preliminary photometry is based on the nearby SDSS stars:

T_start (UT)                 T0+                Filter   Exp.     OT
                                  mid,days                   s         mag

2013-05-05T20:52:35    0.5309            R        8x180   19.4 +/- 0.07