TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4223
SUBJECT: GRB051105B: REM Optical observation
DATE:    05/11/09 11:21:56 GMT
FROM:    Silvia Piranomonte at OAR  <piranomonte@mporzio.astro.it>

E. Distefano, S. Piranomonte, E. Molinari, G. Chincarini, F.M. Zerbi, M. 
Rodono', S. Covino, V. Testa, G. Tosti, F. Vitali, L.A. Antonelli, P. 
Conconi, G. Cutispoto, G. Malaspina, L. Nicastro, E. Palazzi, E. Meurs, 
P. Goldoni, on behalf of the REM/ROSS Team report:

On Nov 05, 2005 the field of GRB051105B (Mereghetti et al. GCN4192)
has been observed with the REM telescope located in La Silla (Chile).

The field was imaged with ROSS REM instrument in R, V and I filters 
starting at 2005-11-06T02:20:58 UT (approximately 1 hour
after the burst) for a total integration time of 120 seconds for each 
filter.

No sources are detected within IBAS Integral error circle (Mereghetti et 
al. GCN4192) down to a limiting magnitude of 17.9, 17.1, 18.4 
respectively (3-sigma upper limit).