GCN Circular 19072
Subject
GRB 160223A: AbAO optical observations
Event
Date
2016-02-24T20:22:47Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), R. Inasaridze (AbAO), V. Ayvazian (AbAO), A. Volnova 
(IKI), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger
GRB follow-up collaboration:
We observed the field of Swift and Fermi GRB 160223A (Markwardt et
al., GCN 19057; Veres  et al., GCN 19064) with AS-32 (0.7m) telescope of 
Abastumani Observatory starting on Feb. 23 (UT) 23:51:22. We obtained 
several unfiltered images of the field. We do not detect afterglow 
candidate (Bolmer et al., GCN 19058) down to 20.4m. A preliminary 
photometry of the field is following
Date         UT start      t-T0       Filter     Exp.    UL (3 sigma)
                              (mid, days)           (s)
2016-02-23 23:51:22    0.96907  none    21*120  20.4
photometry is based on nearby  stars of SDSS DR9 catalog, Lupton 
transformation into R.