[vsnet-grb-info 9799] GRB 100906A: optical observations at Mt.Terskol
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Sep 10 11:44:36 JST 2010
TITLE: GCN CIRCULAR
NUMBER: 11267
SUBJECT: GRB 100906A: optical observations at Mt.Terskol
DATE: 10/09/10 02:44:31 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at iki.rssi.ru>
M. Andreev, A. Sergeev (Terskol Branch of Institute of Astronomy),
A.Pozanenko (IKI), N. Parakhin, S. Velichko, N. Borachok (IC AMER)
V. Petkov (Baksan Neutrino Observatory INR RAS) on behalf of larger GRB
follow up collaboration report:
We observed the field of Swift GRB 100906A (Markwardt et al., GCN 11227)
with Zeiss-2000 telescope of Mt.Terskol observatory starting Sep. 06 (UT)
23:56. We obtained images in g,V, r filters. The afterglow (Markwardt et al.
GCN 11227, Ivanov et al. GCN 11228, Melandri et al. GCN 11229) is clealy
detected in all filters. The preliminary photometry is based on GSC2.3
catalog and Jordi et al. (2006) UBVRcIc -> ugriz transformations:
T0+ Filter, Exp. OT
(d)
0.4213 r 6x120 19.43 +/-0.03
0.4626 g 10x120 20.11 +/-0.02
0.4785 V 7x120 19.77 +/-0.03
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