GCN Circular 19859

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

We imaged the field of GRB 160824A detected by SWIFT(trigger 709765)
with the robotic telescope of (IAU station 565) Bassano Bresciano 
Observatory, Italy. Member of: 
AAVSO - American Association of Variable Star Observers.
ISSP - Italian Supernovae Search Project.
UAI/SSV - Unione Astrofili Italiani/sezione stelle variabili.

The observations started 20.77 min after the GRB trigger,  
with our Schmidt telescope D=320/400 mm F/D=3.1.

Weather conditions not good for Moon proximity.

We co-added 4 series of 20 exposures of 120 sec each.

Start T0+      End T0+      CVlim
20.77 min    196.52 min     17.5

We did not found any optical counterpart in the error box of the XRTcandidate.
P.A. Evans (U Leicester), S. B. Cenko (GSFC), et al.

Magnitudes were estimated with the UCAC4 cat. and 
are not corrected for galactic dust extinction.

Reference:
http://www.osservatoriobassano.org/GRB.asp

The message may be cited.