[vsnet-grb-info 10623] GRB 110530A: optical observations at Mt. Terskol

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  12052
SUBJECT: GRB 110530A: optical observations at Mt. Terskol
DATE:    11/05/30 21:51:28 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

M. Andreev, A. Sergeev, I. Sokolov (Terskol Branch of Institute of 
Astronomy), Yu. Bronich (IC AMER of NASU),  A.Pozanenko (IKI) on behalf of 
larger GRB follow up collaboration report:

We observed the optical afterglow  of the Swift   GRB 110530A (D'Avanzo et 
al, GCN 12046) with Zeiss-2000 and Zeiss-600 telescopes of Mt.Terskol 
observatory. Optical afterglow is detected in a stacked images. The 
photometry is based on the star USNO-B1.0 1519-0265568 (RA=18 48 15.86, 
Dec=+61 56 15.0) assuming R=16.08  is following

UT (mid time), Exposure,   Filter,     OT

18:00              12 x 30 s    R(gunn)  20.32 +/- 0.08
18:58              24 x 150 s  R           20.6   +/- 0.2