TITLE:   GCN CIRCULAR
NUMBER:  13738
SUBJECT: GRB 120909A: Pi of the Sky upper limits
DATE:    12/09/09 21:17:21 GMT
FROM:    Lech Wiktor Piotrowski at U Warsaw  <lewhoo@fuw.edu.pl>

T.Batsch,A.Cwiek,A.Majcher,A.Majczyna,K.Nawrocki,M.Sokolowski,G.Wrochna 
(NCBJ, Swierk),
M.Cwiok,L.W.Piotrowski,M.Zaremba,A.F.Zarnecki (University of Warsaw),
K.Malek,L.Mankiewicz,R.Opiela,M.Siudek,V.Repei (CFT PAN),
G.Kasprowicz (Warsaw University of Technology),
from the "Pi of the Sky" collaboration ( http://grb.fuw.edu.pl ).

The wide field "Pi of the Sky South" telescope, installed in
the private observatory of Alain Maury in San Pedro de Atacama 
(http://grb.fuw.edu.pl/pi/index.html#spda_site.htm) observed coordinates 
of the GRB 120909A, starting 10 s exposure 94 s after the reported SWIFT 
BAT detection. No new source was identified. The limiting magnitude is 
11.6, based on the reference star magnitudo in V filter.

We acknowledge support received from Alain Maury at SPdA Observatory.

This message can be cited.