GCN Circular 11839
Subject
GRB 110328A / Swift J164449.3+573451: LOAO R-band Observation
Date
2011-03-30T06:13:19Z (13 years ago)
From
Myungshin Im at Seoul Nat U <mim@astro.snu.ac.kr>
Myungshin Im (CEOU/SNU), Yuji Urata (NCU), and Kuiyun Huang (ASIAA)
on behalf of EAFON
Starting at 2011 March 29,10:53:45 UT (roughly 22 hrs after the 1st
burst alert), we obtained a series of R-band images of the field of
GRB 110328A / Swift J164449.3+573451 (Cummings et al. GCN 11823) using
the 1.0m telescope at Mt. Lemmon, AZ, USA.
We identify the optical counterpart (Volonva et al. GCN 11837,
Cenko et al. GCN 11827, Leloudas et al. GCN 11830, Degarte et al.
GCN 11834) in a stacked image with the total integration time of
2500 secs.
A preliminary analysis shows that the brightness of the counterpart
is R = 22.1 +- 0.4 mag, where the photometry calibration is based on
the USNO B-1 star 1475-0312998.
We thank the LOAO operator, I. Baek for her assistance of this
observation.