TITLE:   GCN CIRCULAR
NUMBER:  15532
SUBJECT: GRB 131127A: Bassano Bresciano Observatory optical upper limit
DATE:    13/11/28 15:00:35 GMT
FROM:    Ulisse Quadri at Bassano Bresciano Obs  <oabb@ulisse.bs.it>

U.Quadri, L.Strabla and R.Girelli report:

We imaged the field of GRB 131127A detected 
by SWIFT(trigger 00579571) with the robotic 
telescope of (IAU station 565) Bassano Bresciano 
Observatory, Italy (www.osservatoriobassano.org).

The observations started 9h 2m. after the 
GRB trigger,with our schmidt telescope 
D=320/400 mm F/D=3.1.

Weather conditions were good.

We co-added a series of 5 exposures of 120 sec each.

We did not found any optical counterpart 
in the error box of the XRTcandidate
(Markwardt et al., GCN 15516).

Start      End       R.lim
542min     554min    18.5

Magnitudes were estimated with the USNO-B1 cat. 
and are not corrected for galactic dust extinction.

The message may be cited.