TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2862 SUBJECT: GRB041217: optical limit 30 min after GRB DATE: 04/12/19 00:38:54 GMT FROM: Grzegorz Wrochna at Soltan Inst.for Nuclear Studies M.Cwiok, K.Krupska, K.Kwiecinska, L.Mankiewicz, K.Nawrocki, B.Pilecki, L.W.Piotrowski, G.Pojmanski, M.Sokolowski, D.Szczygiel, G.Wrochna, on behalf of "Pi of the Sky / ASAS" collaboration http://grb.fuw.edu.pl The GRB 041217 (GCN 2853) error box was observed by "Pi of the Sky" apparatus at Las Campanas Observatory at 7:58 UT, i.e. 30 minutes after the GRB. 3 exposures, 10s each, have been taken by 2 cameras. No new object has been found within the SWIFT error box. The limiting magnitude on 3 coadded frames is 11.5m, however, the object could be hidden in the glow of alpha Crt. More information at http://grb.fuw.edu.pl/pi/ot/grb041217/