TITLE:   GCN CIRCULAR
NUMBER:  8489
SUBJECT: GRB 081105: Observations from OSN
DATE:    08/11/06 21:59:26 GMT
FROM:    Antonio Deugarte at IAA-CSIC  <deugarte@iaa.es>

A. de Ugarte Postigo (ESO, Santiago), F. Aceituno &
A. J. Castro-Tirado (IAA-CSIC, Granada) report on
behalf of a larger collaboration:

We have observed the field of GRB 081105
(Cummings et al. GCNC 8484) with the 1.5m OSN
telescope in R and I bands. We do not detect any
source within the XRT error box (Beardmore et
al. GCNC 8487). The mean times and 3-sigma
limits of the observations are the following:
t-t0(days)    Band     Limit
1.2454        R        > 21.3
1.2499        I        > 20.7
Photometry is based on the star 0934-0003777 of
USNO-B1.0 catalogue (R.A.: 3.953112, Dec.:
+3.463859), assuming R=17.11 and I=16.54.