[vsnet-grb-info 2251] GRB040825A: Rc optical observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4090
SUBJECT: GRB040825A: Rc optical observations  
DATE:    05/10/12 19:46:11 GMT
FROM:    Graziella Pizzichini at IASF/CNR,Bologna  <pizzichini at bo.iasf.cnr.it>

  GRB050805A: optical observations


D. Nanni, (INAF/Osservatorio di Roma), F. Terra (CRATI scrl, and Cosenza 
University), C. Bartolini, G. Greco, A. Guarnieri, A. Piccioni (Bologna 
University), S. Marinoni, A. De Blasi (INAF/Osservatorio di Bologna) and 
G. Pizzichini (INAF/IASF, Bologna) 
report:

We observed the error box of possible GRB050805A (Swift trigger
149118) with the 152 cm Loiano Telescope and the BFOSC camera system in
good sky conditions.
We obtained the following images, all of them in the Rc filter:
     Start time (UT)  Duration
                       (min)
     050805 22:24:05    10
     050805 22:44:13    10
     050805 23:09:17    20
     050805 23:34:36    20
     050806 02:07:02    20
     050806 02:29:00    20

We do not detect the optical candidate cited by Lipunov et al., GCN 3767.

At its location the 3 sigma magnitude limit in our coadded images is 22.5 .

The coadded images and the observation log will be posted in our
public directory from where they can be retrieved by sftp
using hostname: ermione.bo.astro.it, username: publicGRB, password:
GRB_bo, directory: GRB050805A.