GCN Circular 23731

Gregory S.H. Paek, Myungshin Im, Changsu Choi, Sophia Kim (CEOU/SNU),
Hyun-Il Sung (KASI), and Yuji Urata (NCU) on behalf of a larger
collaboration

We observed the afterglow of GRB 190114A(LaPorte et al., GCN 23677
Not found
 
 
; Siegel
et al., GCN 23678
Not found
 
 
; Evans et al., GCN 23679
Not found
 
 
; de Ugarte Postigo et al., GCN
23680
Not found
 
 
; Evans et al., 23681; Bolmer et al., GCN 23682
Not found
 
 
; D'Avanzo et al., GCN
23683
Not found
 
 
; Barthelmy et al., GCN 23685
Not found
 
 
; de Ugarte Postigo et al., GCN 23687
Not found
 
 
;
Selsing et al. GCN 23697
Not found
 
 
) with the 1.0m telescope at the Deokheung Optical
Astronomy Observatory and the 1.0m telescope at the Lemonsan Optical
Astronomical Observatory.
The observation at the Deokheung Optical Astronomy Observatory started at
about 0.2 hours after the initial alert and the observation at the Lemonsan
Optical Astronomy Observatory started at about 24.7 hours after the initial
alert.
We did not find any positive signal at both observations and obtained
following preliminary 3 sigma upper limits.

obs         mjd         filter      exptime[sec]     ul[AB magtnitude]
DOAO        58497.642   R           60*10     >17.1
LOAO        58498.660   R           120*15    >20.3

The photometry is based on nearby APASS stars, Blaton transformation
(Blaton et al. 2007).

Further observations and analysis are being carried out.

[GCN OPS NOTE(15jan19):  The authors have corrected a mistake in the time delay
value; it should have been 12.3 hrs.  Please see Circ# 23738.]