[vsnet-grb-info 18598] GRB 161014A: Continued MITSuME Akeno Optical Observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20046
SUBJECT: GRB 161014A: Continued MITSuME Akeno Optical Observation 
DATE:    16/10/15 11:33:51 GMT
FROM:    Taketoshi Yoshii at Tokyo Tech  <yoshii.t.ac at m.titech.ac.jp>

K.Morita, T.Fujiwara, Y. Saito, Y. Ono, T. Yoshii, H. Ohuchi, Y.Tachibana, Y. Yano, S. Harita, Y.Muraki,  K.Saisho, T.Ozawa, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:

We have been observing the optical counterpart of GRB 161014A (J. L. Racusin et al., GCN
Circular #20035) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm
telescope of Akeno Observatory, Yamanashi, Japan.

The observation started on 2016-10-14 12:32:08 UT (46 sec after the burst) and
we detected the optical counterpart in all three bands.
The measured magnitudes were listed as follows.

We obtained following results for the magnitudes.

T0+[sec]    MID-UT      T-EXP[sec]         g'              Rc                      Ic
-------------------------------------------------------------------------------------------------------
46            12:34:48        270                  16.67 +/- 0.13         15.69 +/- 0.08      15.40 +/- 0.07
376           13:03:53        1380                 > 18.57                17.59 +/- 0.17      17.86 +/- 0.25
-------------------------------------------------------------------------------------------------------

T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.