GCN Circular 18503
Subject
GRB 151027A: THO optical observations
Date
2015-10-28T02:54:58Z (9 years ago)
From
Veli-Pekka Hentunen at Taurus Hill Obs,A95 <veli-pekka.hentunen@kassiopeia.net>
Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill
Observatory, Varkaus, Finland) report:
We have detected GRB 151027A optical afterglow at Taurus Hill Observatory
(A95) using Meade 16" ACF 0.40-m/8.0 telescope and SBIG ST-8XME CCD.
The observations were started at 2015-10-27 17:11:39 (UT). Eight photometric
R filter and eight photometric V filter images with 300 sec exposure time were
taken.
The afterglow was detected at the following position RA 18:09:56.72 and
DEC +61:21:13.2.
The following magnitudes were obtained from the observations using
NOMAD1 1512-0243178 (R=13.200 and V=13.670) as a comparison star:
Tmid(h)+T0 Filter Exp. time Mag Mag. Err.
13.393 R 4x300s 17.06 0.12
13.747 V 4x300s 17.56 0.25
14.103 R 4x300s 17.06 0.09
14.457 V 4x300s 17.49 0.10
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