Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 15969

GRB 140311A: Bassano Bresciano Observatory optical upper limit
2014-03-12T17:12:37Z (10 years ago)
Ulisse Quadri at Bassano Bresciano Obs <>
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.

The message may be cited.
Looking for U.S. government information and services? Visit