[vsnet-grb-info 14113] GRB 131030A: Bassano Bresciano Observatory optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15427
SUBJECT: GRB 131030A: Bassano Bresciano Observatory optical observations
DATE:    13/11/01 09:20:06 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 131030A detected by SWIFT 
(trigger 576238,Troja et al. GCN 15402) with the robotic 
telescope of (IAU station 565) Bassano Bresciano 
Observatory, Italy.

The observations started 20h 11m. after the 
GRB trigger,with our schmidt telescope 
D=320 mm F/D=3.1.

Weather conditions were good.

We co-added a series of 30 unfiltered CCD exposures of 120sec.


We detect a (fading) afterglow in the error box given by SWIFT.
at the following position (+/- 3 arcsec):

RA (J2000.0) =  23h 00m 16.12s
DEC(J2000.0) = -05d 22p 06.9s


The results of our photometry are:

    Date        UT        Vmag   +/- err  
               Middle    

2013-10-31   17:40:39     19.17    0.21
2013-10-31   18:22:02     19.62    0.28
2013-10-31   19:04:46     20.45    0.22


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

The message may be cited.