GCN Circular 14337
Subject
GRB 130327A: ISON-NM optical upper limit
Event
Date
2013-03-27T09:59:23Z (13 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
L. Elenin (KIAM), A. Volnova (SAI MSU), I. Molotov (KIAM), A. Pozanenko
(IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 130327A (Ukwatta, et al., GCN
14331) with 0.45-m telescope of ISON-NM observatory on Mar. 27,
between (UT) 02:44:04 - 03:27:54. We took several unfiltered images of
30 s exposures. Within enhanced XRT afterglow position (Osborne et al.,
GCN 14335) we do not detect any new object. We marginally (S/N~2.5, R~
20.3) detected "second uncatalogued source" (Morgan et al., GCN 14333;
Butler et al., GCN 14334) at RA , DEC (J2000): 06 08 09.06 +55 42 48.5.
A photometry of combined image is based on the USNO-B1.0 (R2)
nearby stars
Start, T0+, Exposure, OT, UL (3 sigma)
(UT) mid, d (s)
02:44:04 0.0546 60x30 n/d 20.0