TITLE: GCN CIRCULAR NUMBER: 7236 SUBJECT: GRB 080129: optical limit by Pi of the Sky DATE: 08/01/29 21:04:53 GMT FROM: Grzegorz Wrochna at Soltan Inst.for Nuclear Studies 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 located at Las Campanas Observatory imaged the region of GRB 080129 from 6:09:21 UT, i.e. 155s after the GRB (74s after the trigger), with 10s exposures (IR-cut filter only). No new object has been detected within the XRT error box. Limiting magnitude for 10s exposures is >11.8 mag. The limit for 20 coadded images is >12.5 mag.