GCN Circular 14756
Subject
GRB 130604A: ISON-NM optical upper limit
Event
Date
2013-06-04T09:48:21Z (12 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
L. Elenin (KIAM), V. Savanevych (KNURE), A. Bryukhovetskiy (NSFCTC), I.
Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We observed of the field of the Swift GRB 130604A (Melandri et al., GCN
14752) with 0.45-m telescope of ISON-NM observatory on June. 04 (UT)
06:56:11, i.e. 105 s after burst trigger. Series of 30 s and 60 s exposures
were obtained in clear filter. In the combined image of the first 3 images
we do not detect afterglow candidate (Perley, GCB 14753). Preliminary
photometry is based on the USNO-B1.0 (R2) nearby stars:
UT start, T0+ Exposure, OT, UL (3 sigma)
days s
06:56:11 0.0019 3x30 n/d 19.7