[vsnet-grb-info 22848] GRB 190630C: ISON-Castelgrande optical upper limit
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Tue Jul 2 05:09:55 JST 2019
TITLE: GCN CIRCULAR
NUMBER: 24947
SUBJECT: GRB 190630C: ISON-Castelgrande optical upper limit
DATE: 19/07/01 20:07:58 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at 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.
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