GCN Circular 10273
Subject
GRB 091208B: optical observations
Date
2009-12-09T12:32:39Z (14 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
M.Andreev, A.Sergeev, N.Parakhin, N.Karpov (Terskol Branch of Institute of
Astronomy), Yu. Kuznietsova (Main Astronomical Observatory NASU), V.Petkov
(Baksan Neutrino Observatory INR) and A. Pozanenko (IKI) on behalf of larger
GRB follow up collaboration report:
We observed the field of the Swift GRB 091208B (Pagani et al. GCN 10256)
with the Z-600 telescope of Mt.Terskol observatory in R-filter on Dec. 08
starting at (UT) 15:40. In combined images we detect the optical afterglow
(Ugarte Postigo et al. GCN 10255, Pagani et al. GCN 10256).
Preliminary photometry is based on the USNO-B1.0 reference star
#1069-0020318 assuming R2=17.47:
UT Filter, Exposure, mag. err.
(mid) (s)
16:10 R 30x120 20.15 0.25
18:11 R 30x120 20.60 0.25
19:11 R 30x120 20.9 0.3
20:19 R 30x120 21.0 0.3
Combined image can be found in
http://grb.rssi.ru/GRB091208B/GRB091208B_Terskol600_R.jpg
