GCN Circular 24947
Subject
GRB 190630C: ISON-Castelgrande optical upper limit
Event
Date
2019-07-01T20:07:58Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), S. Schmalz (KIAM), A. Pozanenko (IKI), A. Volnova
(IKI), E. Mazaeva (IKI), I. Molotov (KIAM) report on behalf of larger
GRB IKI FuN collaboration:
We observed the field of GRB 190630C (Ukwatta et al., GCN 24927) with
ORI-22 (22 cm) telescope of ISON-Castelgrande observatory in Clear
filter starting on July 01 (UT) 00:03:42. We do not detect any object
within enhanced Swift-XRT position (Goad et al., GCN 24930). Preliminary
photometry of the field is following
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2019-07-01 00:03:42 0.02584 CR 53*60 n/d n/d 18.8
The photometry is based on nearby USNO-B1.0 (R2) stars.