GCN Circular 9606
Subject
GRB 090313: optical observations
Date
2009-07-03T10:53:29Z (15 years ago)
From
Graziella Pizzichini at IASF/CNR,Bologna <pizzichini@iasfbo.inaf.it>
E. Maiorano, G. Pizzichini (INAF/IASF Bologna), C. Bartolini, G. Greco,
A. Guarnieri, A. Mantegna, A. Piccioni (Bologna University),
D. Nanni (INAF/OAR and Second University of Rome "Tor Vergata"),
F. Terra (Second University of Roma "Tor Vergata"), R. Gualandi
(Bologna Observatory) report:
During the night between 09/03/13 and 09/03/14 we observed the OT of
GRB090313 (Chornock et al., GCN 8979, Mao et al., GCN 8980) with the
1.52 cm telescope of the Bologna Observatory in Loiano. Airmass 1.24
and seeing less than 2" .
Observations were disturbed by the moon. The images were calibrated
using the star quoted by Guidorzi et al., GCN 8989.
By summing 9 images in filter R, with a total duration of 2280s
obtained on March 14 between 00:41:11 and 01:27:59 UT, (mid exposure
time 15.97 hr after the burst) we find R mag = 19.26 +/- 0.15
Our image has been posted in our public directory
from where it can be retrieved by sftp using
sftp publicGRB@137.204.66.221
password: GRB_bo
cd GRB090313