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GCN Circular 24838

GRB 190613A: Kitab and AbAO optical upper limit
2019-06-15T09:38:38Z (5 years ago)
Alexei Pozanenko at IKI, Moscow <>
S. Belkin (IKI), A. Novichonok (KIAM), A. Zhornichenko (KIAM), R. Ya. 
Inasaridze (AbAO),  V.R. Ayvazian (AbAO), A. Pozanenko (IKI), E. Mazaeva 
(IKI), A. Volnova (IKI), I. Molotov (KIAM), Sh. Ehgamberdiev (UBAI) report 
on behalf of larger IKI GRB FuN collaboration:

We observed the field of the  GRB 190613A (Ambrosi et al., GCN  24798) 
with RC-36  telescope of Kitab Observatory  and AS-32 of Abastumani 
observatory . We do not detect the optical afterglow (Ambrosi et al., GCN 
24798; Zheng et al., GCN  24801;  Lipunov et al., GCN  24803).  Preliminary 
photometry of the field is following.

Date       UT start   t-T0       Filter Exp.   OT  Err.   UL(3sigma) 
                       (mid, days)        (s)

2019-06-13 16:26:41  0.54575    CR     5500  n/d  n/d   20.6  RC-36
2019-06-13 21:33:40  0.73706      R      1800  n/d  n/d   21.0  AS-32

The photometry is based on the nearby USNO-B1 (R2) stars
USNO-B1.0_id  R2
1572-0165015 13.62
1572-0164999 14.91
1572-0164916 14.28

[GCN OPS NOTE(15jun19): Per OPS, the typo in the Subject-line
"1906013A" was changed to "190613A".]
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