GCN Circular 6222
Subject
GRB070208: optical observations
Date
2007-03-23T19:07:45Z (18 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Klunko (ISTP), A. Shulga, A. Volnova (SAI MSU), V. Kouprianov (GAO), A.
Pozanenko (IKI) on behalf of larger GRB follow up collaboration report:
We observed the afterglow of GRB070208 (Guidorzi et al., GCN 6077, Fox et
al., GCN 6078, Bloom GCN 6079) in R-band on Feb.8 with 1.5m telescope of
Sayan observatory. A set of 300 s exposures was obtained between (UT) 15:43
and 19:28 (Klunko et al., GCN 6093). Best combined image of total exposure
4200 s is centered at Feb. 7.785. After mask subtraction of the nearby
galaxy in the best combined image we estimate OT magnitude as following:
Mid time (UT), Exposure, R_mag
Feb. 7.785 14x300 s 21.4 +/- 0.2
The photometry is based on USNO A2.0 stars. The mask subtracted image can
be found in http://grb.rssi.ru/GRB070208/
The message may be cited.