[vsnet-grb-info 16367] GRB 150323C: Nishi-Harima NIR Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17648
SUBJECT: GRB 150323C: Nishi-Harima NIR Observations
DATE:    15/03/26 19:33:31 GMT
FROM:    Taketoshi Yoshii at Tokyo Tech  <yoshii.t.ac at m.titech.ac.jp>

S. Honda. J. Takahashi, Y. Takagi, K. Morihana, Y. Itoh
(Univ. of Hyogo), and Y. Saito (Tokyo Tech)
report on behalf of Nayuta team and OISTER collaboration:

We observed the field of GRB 150323C (Amaral-Rogers et al., GCN 17621)
with Nishiharima Infrared Camera (NIC) attached to the Nayuta 2-m
telescope at the Nishi-Harima Astronomical Observatory.

The observations were started at 17:30 UT on 2015-03-23.
We detected the near-infrared afterglow in J, H and Ks bands.

Photometric results of our observations are shown below.
We used 2MASS 12502614+5011480, 12502605+5011289, 12503202+5010217,
and 12503649+5012012 as reference stars for photometry.

# MID-UT  Tmid-T0 T-EXP  J_mag           H_mag               Ks_mag
--------------------------------------------------------------------------------
17:33:16    28   1200   18.22 +/- 0.10   17.25 +/- 0.10   16.44 +/- 0.13
17:59:27    54   1200   18.68 +/- 0.11   17.59 +/- 0.11   16.94 +/- 0.14
18:25:32    80   1200   19.40 +/- 0.20   17.77 +/- 0.13   17.23 +/- 0.14
---------------------------------------------------------------------------------
Tmid-T0: Elapsed time after the burst (minutes)
T-EXP: Total Exposure time (seconds)