GCN Circular 13065
Subject
GRB 120312A: CrAO optical upper limit
Date
2012-03-14T21:35:32Z (12 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V. Rumyantsev, N. Pit' (CrAO), A. Pozanenko (IKI) report on behalf of larger
GRB follow-up collaboration:
We observed the field of GRB 120312A (Stamatikos et al., GCN 13049) with
AZT-11 telescope of CrAO observatory starting on March 12 (UT) 23:21:13
under moderate weather conditions and seeing of about 2.4 arsces. Within
enhanced Swift-XRT position (Mangano et al., GCN 13053) we do not detected
any optical source, in particular afterglow candidate (Tanvir et al., GCN
13055). A photometry is based on the USNO-B1.0 star 1138-0244157
(16:47:09.53 +23:51:17.4) assuming R=17.3:
T_start UT T0+ Filter, Exposure, OT, uplim (3 sigma)
(mid, d) (s)
23:21:13 0.3291 R 26x180 n/d 20.75