[vsnet-grb-info 4267] GRB070129: MITSuME optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6062
SUBJECT: GRB070129: MITSuME optical observation
DATE:    07/01/31 06:31:04 GMT
FROM:    Nobuyuki Kawai at Tokyo Tech  <nkawai at hp.phys.titech.ac.jp>

T. Ishimura, Y. Yatsu, T. Shimokawabe, N. Vasquez, and N. Kawai 
(Tokyo Tech) report on behalf of the MITSuME collaboration:

We observed the error box of GRB070129 (Godet et al., GCN 6053)
with the 3-color 50cm MITSuME Telescope at Akeno, Japan 
starting at 9:44:12 UT, 10.1 hours after the trigger.    
In the co-added images of Ic, Rc, and g' bands, we did not detect
the afterglow .  The 3-sigma limiting magnitudes based on USNO-B1.0
(I-band) and NOMAD (R-band,g'-band) stars are following.

Filter   start time   end time    Exp(s)    Mag (3-sigma upper limit)
-----------------------------------------------------------------
Ic        9:44:12      10:22:57     60s * 25       18.4 
Rc        9:44:12      10:22:57     60s * 25       19.0 
g'        9:44:12      10:22:57     60s * 25	   19.4
-----------------------------------------------------------------