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GCN Circular 15427

Subject

GRB 131030A: Bassano Bresciano Observatory optical observations

Date

2013-11-01T09:20:06Z (11 years ago)

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 131030A detected by SWIFT 
(trigger 576238,Troja et al. GCN 15402Not found
 
 
) 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.