TITLE:   GCN CIRCULAR
NUMBER:  7500
SUBJECT: GRB 080319D: optical upper limit
DATE:    08/03/21 17:57:03 GMT
FROM:    Giuseppe Greco at U Bologna  <giuseppe.greco2@studio.unibo.it>

G. Greco (Bologna University), F. Terra (Second University of
Roma "Tor Vergata"), C. Bartolini, A. Guarnieri, A. Piccioni
(Bologna University), F. Munz, G. Pizzichini (INAF/IASF Bologna),
D. Nanni (INAF/OAR and Second University of Rome "Tor Vergata"),
A. Shearer (Centre for Astronomy, Galway), 
R. Gualandi (Bologna Observatory) report:


We observed the field of GRB 080319D (Brown et al., GCN 7453)
with the 152 cm telescope located in Loiano, under unfavourable
conditions due to full moon light.

One Rc-band observation (1x600 sec) was done on 2008
March at 20.779 UT middle exposure time.

We do not detect any object at the position of the candidate
afterglow reported by Immler et al. (GCN 7458).
Our 3-sigma limiting magnitude is R~20 (based on the Nomad1 catalogue).

The image has been posted in our public directory
from where it can be retrieved
by sftp using
hostname: ermione.bo.astro.it
username: publicGRB
password: GRB_bo.
directory: GRB080319D