[vsnet-grb-info 5915] GRB 080325: optical upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  7563
SUBJECT: GRB 080325: optical upper limit 
DATE:    08/04/04 15:16:08 GMT
FROM:    Graziella Pizzichini at IASF/CNR,Bologna  <pizzichini at iasfbo.inaf.it>

  F. Munz (INAF/IASF Bologna) F. Terra (Second University of
  Rome "Tor Vergata"), G. Greco, C. Bartolini, A. Guarnieri, A. Piccioni
  (Bologna University), G. Pizzichini (INAF/IASF Bologna),
  D. Nanni (INAF/OAR and Second University of Rome "Tor Vergata"),
  M. Redfern (National University of Ireland, Galway), A. De Blasi
  (Bologna Observatory) report:

  We observed the field of GRB 080325 (GCN 7512, Vetere et al.)
  with the 152 cm telescope located in Loiano.

  We obtained one 10 min exposure in the Rc filter at mean time
  2008 March 26 0.55  UT. Further observations were prevented by
  clouds and the moon. We do not detect any object in the Swift-XRT
  error box reported by Osborne et al. (GCN 7513).

  Our 3-sigma limiting magnitude is R~20.6 (based on Nomad1 catalogue).

  The image shall be 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: GRB080325