TITLE: GCN CIRCULAR NUMBER: 8063 SUBJECT: GRB080805 optical limit by "Pi of the Sky" DATE: 08/08/05 14:26:10 GMT FROM: Marcin Sokolowski at Soltan Inst. Nuc Studies,Warsaw M.Cwiok, W.Dominik, G.Kasprowicz, A.Majcher, A.Majczyna, K.Malek, L.Mankiewicz, M.Molak, K.Nawrocki, L.W.Piotrowski, D.Rybka, M.Sokolowski, J.Uzycki, G.Wrochna, A.F.Zarnecki on behalf of "Pi of the Sky" collaboration http://grb.fuw.edu.pl "Pi of the Sky" apparatus observed the position of GRB080805. Three 10s images of this field have been taken at 07:37:45 - 07:38:42 ( 3 minutes before the GRB). No new object is seen within the error box and the limit is 12.5 magnitudo. After receiving the trigger from SWIFT, the field was observed 84s after the GRB. No new object has been found within the Swift-BAT error box. The limiting magnitude (unfiltered) on single 10s exposures is : 07:42:58 - 07:43:08 - 12.2 mag 07:43:11 - 07:43:21 - 12.2 mag 07:43:24 - 07:43:34 - 12.2 mag and 12.5 mag on 20 coadded images.