GCN Circular 19920
Subject
GRB 160912A: Mondy optical observations
Event
Date
2016-09-13T13:19:46Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva
(IKI), I. Korobtsev (ISTP) report on behalf of larger GRB follow-up
collaboration:
We observed the field of the GRB 160912A (Cannizzo et al.
GCN 19912) with AZT-33IK telescope of Sayan observatory (Mondy)
starting on Sep., 12 (UT) 18:14:25. We obtained several images in
R-filter. We clearly detected optical afterglow (Tanvir et al., GCN
1991). Coordinates of the afterglow are (J2000) 20 05 59.64
+57 33 55.2 with uncertainty of 0.4 arcsec in both coordinates. The
afterglow is 5 arcsec from nearby star (USNO-B1.0 1475-0371357 (J2000)
RA = 20:06:00.32 Dec = +57:33:57.0 R2 = 18.21) and within enhanced XRT
position (Beardmore et al. GCN 19915). Preliminary photometry of the
afterglow is following
Date UT start t-T0 Filter Exp. OT UL (3 sigma)
(mid, days) (s)
2016-09-12 18:14:25 0.10883 R 30*120 22.57 +/-0.08 23.5
Photometry is based on nearby USNO-B1.0 stars
ID RA Dec R2
2 1475-0371275 20:05:49.83 +57:33:12.9 17.09
3 1475-0371352 20:05:59.47 +57:32:43.8 17.46
4 1475-0371174 20:05:41.08 +57:33:00.0 17.43
5 1475-0371504 20:06:16.57 +57:32:46.8 17.62
The finding chart can be found at
http://grb.rssi.ru/GRB160912A/GRB160912A_160912_AZT33IK_fc.png