[vsnet-grb-info 14655] GRB 140311A: Bassano Bresciano Observatory optical upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15969
SUBJECT: GRB 140311A: Bassano Bresciano Observatory optical upper limit
DATE:    14/03/12 17:12:37 GMT
FROM:    Ulisse Quadri at Bassano Bresciano Obs  <oabb at ulisse.bs.it>

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

We imaged the field of GRB 140311A detected by SWIFT(trigger 591390)
with the robotic telescope of (IAU station 565) Bassano Bresciano 
Observatory, Italy (member of ISSP:Italian Supernovae Search Project)

The observations started 1.89 hour after the GRB trigger,  
with our Newton telescope D=250 mm F/D=5.

Weather conditions were good.

We co-added 15 exposures of 120 sec each.

We did not found any optical counterpart
in the error box of the XRTcandidate.
(J. L. Racusin (NASA/GSFC) et al, GCN 15944)

Start T0+      End T0+      R.Lim
1.89 hour     2.37 hour     18.5

Magnitudes were estimated with the USNO-B1.0 cat. 
and are not corrected for galactic dust extinction.

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