[vsnet-grb-info 16366] GRB 150323A: AAO optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17647
SUBJECT: GRB 150323A: AAO optical observations
DATE:    15/03/26 18:41:23 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

E. Mazaeva (IKI), R. Inasaridze (AAO), Sh. Makandarashvili (AAO),   A. 
Volnova (IKI), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of 
larger GRB follow-up collaboration:

We observed the field of the Swift GRB 150323A (Amaral-Rogers et al., GCN 
17611)  with AS-32 (0.7m) telescope of Abastumani Observatory starting on 
Mar. 23 (UT) 22:47:06.  Within the enhanced XRT position (Goad et al., GCN 
17615) we do not detect any object. An upper limit is following

Date          UT start     t-T0        Filter    Exp.      UL(3 sigma)
                          (mid, days)                (s)

2015-03-23 22:47:06    0.85076  None    15*180   21.2

The photometry is based on nearby USNO-B1.0 stars.