[vsnet-grb-info 3830] GRB 060927 : GAO 150cm telescope optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  5664
SUBJECT: GRB 060927 : GAO 150cm telescope optical observation
DATE:    06/09/30 04:41:01 GMT
FROM:    Kenzo Kinugasa at Gunma Astro. Obs/Japan  <kinugasa at astron.pref.gunma.jp>

K. Kinugasa (Gunma Astronomical Observatory) and K. Torii (Osaka U.) report:

 The error region of GRB 060927 (Barbier et al., GCN 5627) was imaged by
the LN2 cooled CCD camera atattched on the 150 cm telescope of the Gunma 
Astronomical Observatory.  Starting at Sep.27 14:44:33 UT (37 min after 
the burst), thirty 30 s exposures in Rc band were obtained.

 In a stacked frame, the optical afterglow (Schaefer et al. GCN 5629) is
detected and the magnitude is rouly estimated as follows relative to 
USNO-B1.0 R2 magnitude. 

------------------------
MidUT   Filter  Mag
------------------------
14:56   Rc      ~20.3
------------------------