GCN Circular 15240
Subject
GRB 130907A: Maidanak optical observations
Date
2013-09-21T17:24:34Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Pozanenko (IKI), A. Volnova (IKI), B. Hafizov (UBAI), O. Burhonov
(UBAI) report on behalf of larger GRB follow-up collaboration:
We observed the field of Swift GRB 130907A (Page et al., GCN 15183) with
AZT-22 telescope equipped with SNUCAM of Maidanak observatory starting
Sep., 10 (UT) 11:04:47. We obtained 2 frames with exposures of 300 s in
R filter. On stacked images we clearly detect the source reported by Lee
et al., (GCN 15192). The astrometry of the source is following
RA(J2000) 14 23 34.01
Dec(J2000) +45 36 36.6
with uncertainty of 0.18 arcsec in both coordinates.
The details of the photometry are following:
t_start, filter Exposure, t-t0, OT
(UT) sec mid,days
11:04:47 R 2*300 2.56166 21.44 +/- 0.16
The photometry is based on a nearby SDSS-DR9 star J142338.63+453547.2
with R mag = 18.181 +/- 0.013 (transformation by Lupton 2005)