GCN Circular 17570
Subject
GRB 150309A: AAO optic upper limit
Date
2015-03-12T18:16:20Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), R. Inasaridze (AAO), Sh. Makandarashvili (AAO), A.
Volnova (IKI), Molotov (KIAM), A. Pozanenko (IKI) report on behalf of
larger GRB follow-up collaboration:
We observed the field of the Swift GRB 150309A (Cummings et al., GCN
17553) with AS-32 (0.7m) telescope of Abastumani Observatory starting
on Mar. 10 (UT) 01:40:54. Within the enhanced XRT position (Osborne et
al., GCN 17555) we do not detect any object. An upper limit is following
Date UT start t-T0 Filter Exp. UL(3 sigma)
(mid, days) (s)
2015-03-10 01:40:54 0.12699 None 19*120 21.2
The photometry is based on USNO-B1.0 star
USNO-B1.0_id R2
1764-0030460 15.42