GCN Circular 19199
Subject
GRB 160314A: ISON-Ussuriysk optical upper limit, updated photometry and correction of GCN 19184
Date
2016-03-16T06:14:44Z (8 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), E. Chornaya (UAFO), E. Mazaeva (IKI), A. Matkin
(UAFO, ISON), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf
of larger GRB follow-up collaboration:
After receiving full data set of our observations (GCN 19184) we refine
photometry and correct UT time of the observations.
The field of the GRB 160314A (D'Elia et al., GCN 19182) was observed
with SANTEL-650 (0.65m) telescope of UAFO/ISON-Ussuriysk observatory
starting on March, 14 (UT) 11:56:51 under clear sky but with a high
ground wind speed. We obtained series of unfiltered images of 30 s
exposure. In a combined image we do not detect optical afterglow
(D'Elia et al., GCN 19182; Siegel & D'Elia, GCN 19187; Malesani et al.,
GCN 19191). Photometry of combined images is following
Date UT start t-T0 Filter Exp. OT U_limit (3sigma)
(mid, days) (s)
2016-03-14 11:56:51 0.01728 none 3*30 n/d 18.7
2016-03-14 11:56:51 0.04575 none 30*30 n/d 20.1
The photometry is based on nearby SDSS star J073110.29+170129.9
assuming R_Lupton = 16.132.